An Ammonia molecule is made up of one nitrogen and 3 hydrogen atoms, it has a formula NH3. What is the mass of one more Ammonia? **Hint find the molar mass of ammonia by adding up all of the masses of the elements in the compound.

Answers

Answer 1

The molar mass is the sum of the mass of all the atoms of a particular molecule.

The unit  of molar mass is grams per mole.

The atomic mass of H = 1.00

The atomic mass of N = 14.00

The molar mass of ammonia = atomic mass of N + 3 x (atomic mass of H)

                                                = 14.00 + 3 x (1.00) = 17.00

Therefore the molar mass of ammonia is 17g/mol

The correct answer is  17g/mol.


Related Questions

Explain the changes in kinetic energy as a substance is heated to its melting point, and how these changes affect intermolecular forces during the heating process.

Answers

The more solid a substance is, the less kinetic energy there is. This is because there is not a lot of space for the atoms in the solid state to move. However, in the gaseous state, the atoms are far apart with plenty of space, this lets them create a lot more kinetic energy. Solids have a lot more intermolecular forces because the atoms are together. The IMF (intermolecular force) is what lets the atoms/molecules stick together. In the solid state, all the atoms are stuck together with little to no room in between. In the liquid state, it has a lot of IMF but is weaker then the IMF in the solid state. This is why you have so much resistance when you try to move through water. In the gaseous state, there is little to no IMF because the atoms are all so far apart. This makes it easier for everyone to move around.

To answer your question more directly: As the substance is heated to its melting point, there is an increase in kinetic energy, but decrease in intermolecular forces.

Final answer:

As a substance is heated, the increase in kinetic energy of its particles overcomes the intermolecular forces holding them together, leading to the substance's melting.

Explanation:

When a substance is heated, the kinetic energy of its particles increases. The molecules in the substance start moving faster, which essentially means that their kinetic energy is increasing. This increase in kinetic energy helps overcome the forces of attraction holding the molecules together, or the intermolecular forces.

As this heat energy continues to be applied, the molecules gain enough energy to break free from these attractive forces leading to the transformation from a solid to a liquid. This energy required to change a solid into a liquid at its melting point is referred to as the heat of fusion. The higher the intermolecular forces in a substance, the higher the kinetic energy (or heat) needed to get the substance to melt.

Therefore, in summary, heating a substance increases the kinetic energy of its particles, which helps overcome the intermolecular forces that hold the particles together, leading to the melting of the substance when the particles have enough energy to break free.

Learn more about kinetic energy and intermolecular forces with heating here:

https://brainly.com/question/32026597

#SPJ2

Please help me ASAP


1. As an object moves towards another object the sound waves bunch up.
True Or False

2. As an object moves toward another object the sound waves have lower frequency. True or False.

3. As an object moves toward another object the sound waves have lower frequency. True or False

4. Faster sources moving towards an object have higher pitch than slower moving sources.
True or False

5. An object moving away will it have a lower pitch.
True or False

6. Lower shows differences in frequency as color.
True or False

7. An object moving away to be blue shifted.
True or False

8. Is a star that shows as blue shifted moving toward the observer.
True or False.

9. Faster moving objects shows MORE shift in frequency.
True or False

10. Galaxies appear to be redshifted fom observing on Earth. Is this because they are moving towards the earth.
True or False.

Answers

1. False

2. ?

3. same as 2

4. True

5. False

6. False

7. ?

8. ?

9. True

10. False
Final answer:

Most of these questions relate to the Doppler Effect - how the frequency of sound and light waves changes depending on whether the source is moving towards or away from the observer. Moving toward an observer leads to higher frequencies and a 'blue shift' while moving away leads to lower frequencies and a 'red shift'.

Explanation:

1. As an object moves towards another object the sound waves bunch up. True. This is a representation of the Doppler Effect where the frequency appears to change when a source of sound is moving relative to the observer.

2. As an object moves toward another object the sound waves have a lower frequency. False. As the object moves closer, the sound waves will have a higher frequency.

3. As an object moves toward another object the sound waves have a lower frequency. False as explained in the question.

4. Faster sources moving towards an object have a higher pitch than slower-moving sources. True. Faster moving sources will cause the sound waves to bunch up leading to higher frequency and hence greater pitch.

5. An object moving away will have a lower pitch. True. The pitch will appear to be lower as the sound waves are spread out.

6. Lower shows differences in frequency as color. This sentence is not clear enough to provide an accurate response.

7. An object moving away to be blue-shifted. False. An object moving away shows a red shift; a blue shift occurs when an object is moving toward the observer.

8. Is a star that shows as blue-shifted moving toward the observer. True. The blue shift indicates that a cosmos object is moving towards us.

9. Faster-moving objects show MORE shifts in frequency. True. The frequency of light waves will change more noticeably with faster-moving objects due to the Doppler effect.

10. Galaxies appear to be redshifted from observing on Earth. Is this because they are moving towards the earth? False. Galaxies are moving away from the Earth which is why they appear redshifted.

Learn more about Doppler Effect here:

https://brainly.com/question/33454469

#SPJ3

2H2O + 2Na ? 2NaOH + H2 Which of these is a reactant in this chemical reaction?

Answers

Answer:

Water (H2O) and Sodium (Na) are reactants.

Explanation:

2H2O+2Na......2NaOH+H2

In the above reaction the water (H2O) and sodium (Na) are reactants and sodium hydroxide (NaOH) and hydrogen are products.

And this is the single displacement reaction.

Final answer:

In the equation 2H2O + 2Na → 2NaOH + H2, water (H2O) and sodium (Na) are the reactants, while sodium hydroxide (NaOH) and hydrogen gas (H2) are the products.

Explanation:

In the chemical reaction 2H2O + 2Na → 2NaOH + H2, the reactants are the substances that start the reaction. In this case, the reactants are water (H2O) and sodium (Na). When sodium metal is placed in water, a reaction occurs where these reactants transform into the products, which are sodium hydroxide (NaOH) and hydrogen gas (H2).

Specifically, solid sodium reacts with liquid water, producing molecular hydrogen gas and ionic compound sodium hydroxide, which is a solid in pure form but readily dissolves in water to form an aqueous solution.

How many electrons can the 7th sell hold?

Answers

Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on.

Why don't we get an eclipse every month? *

Answers

ANSWER:

We don't get an eclipse all period because the Moon's revolution is turned at  approximately 5∘ to the ecliptic.

EXPLANATION:

If the Moon's revolution was in the equal level as the Earth's we would encounter two  eclipses all period. A solar eclipse would appear every new moon also a lunar eclipse  would appear every full moon. As the Moon's orbit is turned at 5∘ to the ecliptic, an  eclipse can simply happen when the Moon is near one of its links which are the points  where the Earth and Moon circles intersect. The line joining the links also has to be  facing towards the Sun.

Why do scientists study seismographs?

Answers

The scientists study seismographs to know about the force and the time duration of the earthquake.

What are  seismographs?

The instrument known as seismogram  that makes a record of seismic waves create because of the  earthquake and explosion, or other Earth-shaking phenomenon.

Seismographs are made up  with electromagnetic sensors that then translate ground motions into change in electrical field , which are then processed and recorded by the instruments for further analysis.

Therefore, scientists study seismographs to know about the force and the time duration of the earthquake.

Learn more about seismographs ,here:

https://brainly.com/question/1828024

#SPJ6

Would someone please help me with my chemistry? Thank you

Answers

Because it is just simply bigger a na is way way smaller than a ci.

Ionic radii of cations:

When you form a metal cation, you are removing the outermost electrons and revealing the inner core.  

For example, to form an Na⁺ ion you must remove a 3s electron from an Na atom, exposing the 2s and 2p subshells.

The n = 2 shell is smaller than an n= 3 shell, so an Na⁺ ion is smaller than an Na atom (as in the image below).

Ionic radii of anions:

When you form an anion, you are adding electrons to the outermost shell. These electrons (a) increase the shielding from the nucleus and (b) repel all the other electrons.  

The decreased nuclear attraction and the electronic repulsions cause the electron cloud to expand, so a Cl⁻ ion is larger than a Cl atom.

Is it possible for two different compounds to be made from the exact same two elements? Why or why not? With a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Answers

Yes, it is possible to combine the same two elements to form two different compounds. An example is carbon dioxide CO2 and carbon monoxide CO. This is because two elements can form different types of bond and end up with different compounds.


There is a limited number of elements but a large number of compounds because of the above reason.


Yes, two different compounds can be made from the same two elements by altering their atomic ratios. Despite having fewer than 120 elements, innumerable compounds exist due to various ways elements can combine and bond.

A. This is because different compounds can be created by changing the ratio of atoms of each element. For instance, depending on the number of oxygen atoms bonded to each carbon atom, carbon and oxygen can combine to form carbon monoxide (CO) or carbon dioxide (CO₂).

B. The reason for this is that elements can combine in a variety of ways, resulting in a wide range of compounds with distinct properties. For example, even if two elements form a compound in the same ratio, they can combine in different ratios to form entirely different compounds.

Factors influencing compound formation

Chemical bonding: The type of bond (ionic, covalent) between atoms influences the properties of the resulting compound.Atomic ratios: Compounds can differ based on the ratios of atoms such as seen in the CO and CO2 example.Elemental combinations: Different combinations of atoms can create new compounds.

I WILL WHOEVER ANSWER THIS QUESTION 40 POINTS AND WILL BE MARKED AS BRAINLIEST
What happens when a piece of glass is exposed to intense heat? A) It becomes sand. B) It becomes liquid. C) It becomes opaque. D) It becomes translucent.

Answers

A) It becomes sand
I know this because Minecraft

Answer: The answer is A

Explanation: I know this because I just did the USA test-prep

the density of water at different temperature is listed in the table above. Based on this information we can predict that the density of water at 50 might be and the density at 150 might be?

Answers

look it nup on google should help

Final answer:

The density of water decreases slightly below 1000 kg/m³ as temperatures increase from 4°C to 50°C. At 150°C, water would be a gas with much lower density. This behavior is due to the unique molecular structure and hydrogen bonding in water.

Explanation:

The question regarding the density of water at different temperatures touches on fundamental principles of chemistry and physics. The unique properties of water mean that its density does not simply decrease linearly with temperature. Instead, due to hydrogen bonding and molecular structure, water is at its densest at around 4°C. As the temperature increases from 4°C, the density of liquid water decreases due to increased molecular movement that causes water molecules to occupy more space. Therefore, at 50°C, we can predict the density of water would be slightly lower than its maximum density at 4°C, likely a little under 1000 kg/m³. At 150°C, water would be in a gaseous state under normal atmospheric pressure, and thus its density as a gas would be significantly lower than as a liquid.

What is the SI unit of pressure and from what units is it derived

Answers

The Pascal (symbol: Pa) is the SI derived unit of pressure. It is used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength. It is defined as one Newton per square meter. It is named after the French polymath Blaise Pascal.

The Pascal (Pa) or kilo pascal (kPa) as a unit of pressure measurement is widely used throughout the world and has largely replaced the pounds per square inch.


Final answer:

The SI unit of pressure is the Pascal (Pa) and it is derived from the base units of the International System of Units (SI): kilogram (kg), meter (m), and second (s).

Explanation:

The SI unit of pressure is the Pascal (Pa). It is derived from the base units of the International System of Units (SI): kilogram (kg), meter (m), and second (s).



One Pascal is defined as one Newton per square meter (N/m^2). This means that pressure is the force applied per unit area.



For example, if you have a force of 100 Newtons acting on an area of 1 square meter, the pressure would be 100 Pascals.

Learn more about SI unit of pressure

https://brainly.in/question/213294

#SPJ3

How might scientists use a land surface temperature map such as this one

Answers

Final answer:

Scientists use land surface temperature maps to analyze and forecast changes in Earth's climate, studying variables such as glaciers, river levels, tree rings, and greenhouse gases.

Explanation:

Scientists use a land surface temperature map in various ways to analyze and forecast changes in the Earth's climate. One method is by examining previous and present data, such as the dimensions and locations of glaciers, and the levels of lakes, rivers, and oceans. This can reveal patterns related to global warming and other temperature changes.

Another method is by examining the number and condition of annual rings in trees. The thickness and appearance of these rings can provide information about the climate in various eras. A third approach is analysis of greenhouse gases in the atmosphere, which can point to climactic changes over the years.

Scientists also use temperature maps to model weather patterns, incorporating data about pressure (which can be depicted on the same maps) and solar energy. This can be particularly useful for predicting the path and impact of notable weather events like hurricanes. All of these methods contribute to our understanding of the Earth's climate and how it might change in the future.

Learn more about land surface temperature map here:

https://brainly.com/question/32760713

#SPJ3

Using the combined gas law above, identify the variables that would be in the numerator (a) and denominator (b) if you were to rearrange the gas law to solve for final pressure.

Answers

Explanation: For evaluating the combined gas law, we use four laws:

Charles' Law: Volume of a gas is directly proportional to the Temperature at Constant Pressure.

                           [tex]V\propto T[/tex]      (at constant Pressure)

Boyle's Law: Volume of a gas is inversely proportional to the Pressure of a gas at constant Temperature.

                           [tex]V\propto \frac{1}{P}[/tex]   (at constant Temperature)

Gay-Lussac's Law: Pressure of the gas is directly proportional to the Temperature at constant Volume.                                                                  

                           [tex]P\propto T[/tex]      (at constant Volume)

Avogadro's Law: Volume of gas is directly proportional to the number of moles of gas at constant Pressure and constant Temperature.

                          [tex]V\propto n[/tex]      (at constant Pressure and Temperature)

Combining all the four laws, we get

                           [tex]PV\propto nT[/tex]

                            PV=nRT     (Combined Gas Law)

where, R = Gas constant

Now, we need to calculate the pressure, rearranging the terms:

                          [tex]P=\frac{nRT}{V}[/tex]

When an ideal gas at Initial Pressure [tex]P_1[/tex], Volume [tex]V_1[/tex] and Temperature [tex]T_1[/tex] undergoes change in variables to Final pressure [tex]P_2[/tex], Volume [tex]V_2[/tex] and Temperature [tex]T_2[/tex] , we write

                         [tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]

                        [tex]P_2=(\frac{P_1V_1}{T_1})(\frac{T_2}{V_2})[/tex]

Answer : The variables in the numerator (a) will be, [tex]P_1,V_1,T_2[/tex] and the variables in the denominator (b) will be, [tex]V_2,T_1[/tex]

Explanation :

The combined gas law has arrived from the combination of the four laws:

1) Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and the number of moles.

[tex]P\propto \frac{1}{V}[/tex]

2) Charles' Law : It is defined as the volume of the gas is directly proportional to the temperature of the gas at constant pressure and number of moles.

[tex]V\propto T[/tex]

3) Gay-Lussac's Law : It is defined as the pressure of the gas is directly proportional to the temperature of the gas at constant volume and number of moles.

[tex]P\propto T[/tex]

4) Avogadro's Law : It is defined as the volume of the gas is directly proportional to the number of moles of the gas at constant pressure and temperature.

[tex]V\propto n[/tex]

By combining these four laws, we get the combined gas law.

[tex]PV\propto nT\\\\PV=nRT[/tex]

where, R = gas constant

An ideal gas at initial pressure [tex]P_1[/tex], initial volume [tex]V_1[/tex] and initial temperature [tex]T_1[/tex] undergoes changes with the variables to final pressure [tex]P_2[/tex], final volume [tex]V_2[/tex] and final temperature [tex]T_2[/tex].

By rearranging the gas law, we get the final pressure.

[tex]\frac{P_1V_1}{P_2V_2}=\frac{T_1}{T_2}\\\\P_2=\frac{P_1V_1T_2}{V_2T_1}[/tex]

Therefore, the variables in the numerator (a) will be, [tex]P_1,V_1,T_2[/tex] and the variables in the denominator (b) will be, [tex]V_2,T_1[/tex]

When multiplying 2.3 mm by 8.00 mm to find area, how should you report your answer?
A. 18 mm^2
B. 18.0 mm^2
C. 20 mm^2
D. 18.00 mm^2

Answers

When multiplying 2.3 mm by 8.00 mm to find area, how should you report your answer?

A. 18 mm^2


[tex]<b>HEY THERE![/tex]

QUESTION:- When multiplying 2.3 mm by 8.00 mm to find area, how should you report your answer?

ANSWER :- A. 18mm^2

HOPE IT HELPED YOU.

How many fe(ii) ions are there in 25.0 g of feso4?

Answers

Hey there!:

1 mole of FeSO4 = 151.8 g/mol

25.0 g change to mole  = 25.0 / 151.8

moles of FeSO4 = 0.165 moles

One mole of any substance has  6.02*10²³ units

0.165 moles to get the number of Fe ( II ) ions :

number of  Fe(II) ion = 0.165 * ( 6.02*10²³ )

number of Fe ( II ) ion = 9.93*10²² units


Answer:

[tex]ions_{Fe^{2+}}=9.90x10^{22}ionsFe^{2+}[/tex]

Explanation:

Hello,

In this case, the following mole-mass relationship, is applied to obtain the ions of iron (II) in 25.0 g of iron (II) sulfate whose molar mass is 152 g/mol:

[tex]ions_{Fe^{2+}}=25.0gFeSO_4*\frac{1molFeSO_4}{152gFeSO_4}*\frac{1molFe^{2+}}{1molFeSO_4}*\frac{6.022x10^{23}ionsFe^{2+}}{1molFe^{2+}} \\ions_{Fe^{2+}}=9.90x10^{22}ionsFe^{2+}[/tex]

Best regards.

88 g of the strontium reacts with 160 g bromine to produce how many strontium bromide

Answers

Mass of strontium = 88 g

Atomic mass of Sr = 87.62 u

Moles = mass /atomic mass

Moles of Sr =  88 / 87.62 = 1.004

Mass of bromine = 160 g

Atomic mass of Br = 79.904 u

Molar mass of Br₂ = 79.904 x 2 = 159.808 g/mol

Moles = mass /molar mass

Moles of Br₂ =  160 / 159.808 = 1.001

The balanced chemical equation of the reaction between strontium and bromine:

Sr(s) + Br₂(l) = SrBr₂

The molar ratio between Br₂  and SrBr₂ is 1:1

So the moles of SrBr₂ produced from 1.001 moles of Br₂ is 1.001.

Moles = mass /molar mass

Mass = moles x molar mass

Molar mass of SrBr₂ = 247.4280 g/mol

Mass = 1.001 mol x 247.4280 g/mol

Mass = 247.428 g

The mass of strontium bromide produced is 247.428 g.

If there were only three electron groups around an atom how would they be arranged

Answers

Answer:

They would be arranged in a trigonal planar orientation.

Explanation:

If there were only three electron groups around an atom they tend to repel each other and gain a trigonal planar orientation. A molecule with three electron groups orients the three groups as far apart as possible. They adopt the positions of an equilateral triangle 120° apart and in a plane. The shape of such molecules is trigonal planar. An example is BF3:

Answer:

trigonal planar orientation.

Explanation:

1. Eutrophication can cause excess algae growth. Which of the following describes how nutrients contribute to eutrophication?
A. Released naturally from rocks during weathering
B. Come from fertilizer and sewage runoff
C. Released by dead and decaying organisms
D. Come from water waste from nuclear power plants

Answers

Eutrophication causes excess algae growth because of fertilizer and sewage runoff because of the amounts of nitrogen and phosphorus it contains


Answer:

B

Explanation:

Eutrophication is a major problem for the ecosystems surrounding farmlands. This is as a result of farmers irresponsibly using fertilisers, and end up adding too much to their soil.

The way they see it, is that the more fertiliser they give the plants, the better the plants will grow, unfortunately plants can only take up so much nutrients, and what ends up happening is when the rain comes, a lot of the nutrients in the soil get washed away, and they usually end up in steams or lakes.

Now fertilisers are not specific to certain plants, so algae, which grows in lakes and streams, now have access to an almost endless supply of nutrients. So, what happens is the algae take up nutrients, and grow so much, that it ends up absorbing all the oxygen dissolved in the water. This  causes the fish to die, due to the lack of oxygen and the body of water becomes uninhabitable.

Someone give a 100ml of a certain liquid that weighs 20g, could that be water?

Answers

100 mL of water weighs 100 g.

If 100 mL of a liquid that weighs only 20g, it cannot be water because of the great difference in density, unless there is an enormous error in the weighing process.

an example of a chemical change is

a) dissolving sugar in water
b) sanding wood
c) gasoline burning
d) melting ice

and explain plz so i can rlly learn it !!!

Answers

C) gasoline burning

when we burn gasoline, we are combusting it or combining it with oxygen. That is why engines need a source of oxygen-containing error, and why engines emit carbon dioxide as a byproduct of combustion

I’m so confused on this one!
Which list of elements contains a metal, a metalloid, and a nonmetal?

1) Ag, Si, I2
2) Ge, As, Ne
3) K, Cu, Br2
4) S, Cl2, Ar

Answers

The correct answer is 1) Ag, Si, I₂

Ag or silver is a metal. Silver is a transition element which lies in the d-block of the periodic table.

Si or silicon is a metalloid. Silicon is a metalloid which lies in the p-block of the periodic table.

I₂ or iodine is a nonmetal. Iodine is a halogen which lies in group 17 of the periodic table. All halogens are nonmetals.

Final answer:

Option 1: Ag, Si, I2 is the correct answer, where Ag is a metal, Si is a metalloid, and I2 is a nonmetal. These elements exhibit distinctive properties of metals, metalloids, and nonmetals.

Explanation:

The correct answer is option 1: Ag, Si, I2. In this group, Ag (Silver) is a metal, Si (Silicon) is a metalloid, and I2 (Iodine) is a nonmetal. Metals are elements that have properties such as good electrical and thermal conductivity, malleability, ductility, and a shiny appearance. Metalloids, on the other hand, have properties of both metals and nonmetals. Nonmetals are typically poor conductors of heat and electricity, and they aren't malleable or ductile; they are brittle.

Learn more about Chemical Elements here:

https://brainly.com/question/20573603

#SPJ3

189.5 g of aluminum has _______ moles of aluminum.

(Enter just the number for this one.)

Answers

Hello!

To find the number of moles in the given amount of aluminum, we need to know the mass of one mole of aluminum, and divide that by the given amount of aluminum.

One mole of aluminum is equal to about 27 grams. With that, we can divide it by the given amount of aluminum.

198.5 grams / 27 grams ≈ 7.35185185

According the number of significant figures, there are about 7.4 moles of aluminum in 189.5 grams of aluminum.

Which is the balanced chemical equation representing the reaction between barium sulfide and platinum fluoride? BaS + PtF2 BaF2 + PtS A. BaS + PtF2 BaF2 + PtS B. BaS + 2PtF2 BaF2 + 2PtS C. 2BaS + PtF2 2BaF2 + PtS D. 2BaS + PtF2 2BaF2 + 2PtS

Answers

BAS might be an improperly capitalized: BAs, BaS

PTF2 might be an improperly capitalized: PtF2

BAF2 might be an improperly capitalized: BaF2

PTS might be an improperly capitalized: PtS

Answer:

BaS + PtF2 → BaF2 + PtS

Explanation:

This is an Double Replacement Reaction, so the products gonna be Barium fluoride and Platinum sulfide.

BaS + PtF → BaF + PtS

Which water cycle processes might be responsible for helping to clean/ filter the water? Explain.

Answers

to be as exact as i can it is all of them they all work together to make water good.


Calculate the ratio of effusion rates of cl2 to o2

Answers

Hey There!:

Molar mass O2 => 32.0 g/mol

Molar mass Cl2 => 71.0 g/mol

effusion rate α  1 / (√ molar mass )

E Cl2 / E O2 = √ molar mass O2 / √ molar mass Cl2

E Cl2 / E O2 =   ( √ 32.0 ) /  ( √ 71.0 )

=> 0.671

Hope that helps!



Answer: The ratio of rate of effusion of chlorine gas and oxygen gas will be 0.671

Explanation:

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

[tex]\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}[/tex]

We are given:

Molar mass of chlorine gas = 71 g/mol

Molar mass of oxygen gas = 32 g/mol

By taking their ratio, we get:

[tex]\frac{Rate_{Cl_2}}{Rate_{O_2}}=\sqrt{\frac{M_{O_2}}{M_{Cl_2}}}[/tex]

[tex]\frac{Rate_{Cl_2}}{Rate_{O_2}}=\sqrt{\frac{32}{71}}\\\\\frac{Rate_{Cl_2}}{Rate_{O_2}}=0.671[/tex]

Hence, the ratio of rate of effusion of chlorine gas and oxygen gas will be 0.671

What is the empirical formula of a compound that is 14 g calcium, 11g oxygen, and 0.7 g hydrogen

Answers

CaO2H2

convert to moles, divide all by smallest mole mass, multiply til whole

14 g Ca ÷ 40.08 = .35 mol
11 g O ÷ 16 = .69 mol
.7 g H ÷ 1.008 = .69 mol

.35 ÷ .35 = 1
.69 ÷ .35 = 2
.69 ÷ .35 = 2

CaO2H2

What is a the volume of a salt crystal measuring 3.22 x 10^-2 cm by 1.5 x 10^-4 cm by 4.30 x 10^-3 cm?
A. 2.1 x 10^-8 cm3
B. 21 x 10^-9 cm3
C. 2.1 x 10^-24 cm3
D. 21 x 10^-6 cm3

Answers

Dimension of the salt crystal is:

Length = 3.22 x 10^-2 cm

Breadth = 1.5 x 10^-4 cm

Height = 4.30 x 10^-3 cm

So it is cuboidal in shape.

Volume = L × B × H

[tex]V = 3.22 \times {10}^{ - 2} \times 1.5 \times {10}^{ - 4} \times 4.30 \times {10}^{ - 3} \\ \\ V = 3.22 \times 1.5 \times 4.30 \times {10}^{ (- 2 - 3 - 4)} \\ \\ V = 20.769\times {10}^{ - 9} \\ \\ V = 2.0769 \times {10}^{ - 8} \\ \\ V \approx 2.1 \times {10}^{ - 8} \: {cm}^{3} \\ \\ \boxed{ \red{ \bold{answer: a}}}[/tex]

Most substances can exist as a gas, a liquid or a solid. These are called different ___ of matter.

Answers

Gas, liquid and solid are called the state of matter

Suppose that a mouse with black fur has both an allele for black fur and an allele for white fur (Bb). Based on this information, you can conclude that the dominant allele must be for fur andthe recessive allele must be for fur.

Answers

The dominant must be for the black fur and the recessive must be for the white fur.

Answer:

On the basis of the given information, the dominant allele must be for black fur and the recessive allele must be for white fur.

Explanation:

A variation of a gene, which will generate a certain phenotype, even in the existence of other alleles is known as a dominant allele. On the other hand, a version of a gene that needs to be homozygous when inherited in order to be articulated in the phenotype is known as a recessive allele. The offspring will not express the phenotype of the recessive allele if it is inherited together with a dominant allele, that is, the phenotype of the dominant allele will just be expressed.

Examine the incomplete statement.

Liquids have a _[blank]_ shape and _[blank]_ volume.

Which words best complete the statement?

fixed; fixed
variable; variable
variable; fixed
fixed; variable

Answers

Answer: Option (c) is the correct answer.

Explanation:

In liquids, molecules are held by slightly less strong intermolecular forces of attraction as compared to solids.

Hence, molecules of a liquid are able to slide past each other as they have more kinetic energy than the molecules of a solid.

As a result, liquids are able to occupy the shape of container in which they are placed. Also, liquids have fixed volume but no fixed shape.

Thus, we can conclude that liquids have a variable shape and a fixed volume.

Answer:

variable, fixed

Explanation:

Other Questions
Read the passage from the opinion of the court in Dred Scott v. Sandford, written by Justice Taney. It will be observed, that the plea applies to that class of persons only whose ancestors were negroes of the African race, and imported into this country, and sold and held as slaves. The only matter in issue before the court, therefore, is, whether the descendants of such slaves, when they shall be emancipated, or who are born of parents who had become free before their birth, are citizens of a State, in the sense in which the word "citizen is used in the Constitution of the United States. . . . . . . The question before us is, whether the class of persons described in the plea in abatement compose a portion of this people, and are constituent members of this sovereignty? We think they are not, and that they are not included, and were not intended to be included, under the word "citizens" in the Constitution, and can therefore claim none of the rights and privileges which that instrument provides for and secures to citizens of the United States. Which statement best describes an effective counterclaim to the claim in this passage? Because Dred Scott's parents were born outside the United States, he is not considered to be a citizen with all the rights granted by the Constitution. Because Dred Scott was the child of enslaved people, he is considered to be of a different class than citizens, according to the Constitution. Because Dred Scott and his family were born in the United States, they are citizens with all the rights granted by the Constitution. Because Dred Scott lives in a free state, he is considered to be a citizen with all the rights granted by the Constitution. Oracin con la palabra abjurar Select the correct answer from each drop-down menu. Meteroids are small objects in space, Anita has recently been diagnosed with type 2 diabetes. Which kind of diet is best for her? What is the author's purpose in establishing such a detailed description of the setting near Mt. Agamenticus in Maine? A.to establish the story frame B.to configure the plot structure C.to set the tone and to add an element of suspense D.to provide topographical information about the coastal range The length of a rectangle is 3 inches more than its width if the perimeter is 42 in find the dimensions of the rectangle French philosopher Montesquieu wrote a book about tripartite systems (3 systems), Government. This system separate how are two different bodies. How does his ideas apply to the US Constitution? Match the terms with their correct definitions. 1.courteous politeness and regard for others 2.maturity responding in an appropriate manner to situations 3.environment being in charge of yourself to know when you should act a certain way 4.self-control our surroundings that influence us Different ways to count from 580 -994 FOR THE LOVE OF GOD HELP ME PLEASE!!The trinomial x2 3x 4 is represented by the model.What are the factors of the trinomial? How many baseballs equal one pineapple? Whats the difference between canal and rivers Segments AB and CD intersect (see picture to the right). Prove that if segments AC , CB , BD and AD are congruent, then ray AB is the bisector of CAD and ray CD is the bisector of ACB. Prove that segments ABand CD are perpendicular. He degree to which the surface of an object seems to have a particular feel is referred to as an object's _____________. A. Tone c. Tactility b. Depth d. Texture Plzzzzzz help me due tomorrow u will be marked BRAINLIEST Four neighborhood children opened their own lemonade stand. The table shows the sales information for each stand, in glasses of lemonade. What was the largest fraction of sales of the stands' inventory? A. 12 B. 47 C. 34 D. 712 Lines of poetry may be arranged into groups that are calledQuestion 1 options:linesformsstanzas Computer programs that play chess first appeared in the 1960s, but these programs were no match for the top human players. It was not until 1997 that a chess computer called Deep Blue was able to narrowly defeat world champion Garry Kasparov in a series of games. Kasparov concealed his disappointment as best he could, but he could not hide the embarrassment he felt over losing to a machine. What can you infer about the benefit to the game of chess and of the computer program that plays chess PLS HELP 20PTS What type of relief carvings are on the columns of the Hypostyle Hall in the Great Temple of Amun at Karnak? low relief high relief sunken relief the perimeter of a square with sides of length 3x