the pressure of a gas constant temperature is increased by a factor od 4 by what factor does the volume change
1/4
1/2
1
4

Answers

Answer 1

Answer:

[tex]\frac{1}{4}[/tex]

Explanation:

From the given problem, we are to find the factor number by which the volume of the compressed gas has changed through.

We apply Boyle's law to this problem because the condition of the reaction stipulates a constant temperature.

Boyle's law states "the volume of a given mass of gas is inversely proportional to its pressure provided that temperature remains constant". Mathematically, it is expressed as:

                           P₁V₁ = P₂V₂

P₁ is initial pressure on the gas

V₁  is the initial volume of the gas

P₂ is the final pressure of the gas

V₂ is the final volume of the gas

From the problem, we are to find the factor through which the volume changed:

             P₁V₁ = P₂V₂

              V₂ = [tex]\frac{P_{1} }{P_{2} } V_{1}[/tex]

             

Now:

P₁ =  P₁

P₂ = 4P₁

                V₂ = [tex]\frac{P_{1} }{4P_{1} } V_{1}[/tex]

Therefore, the factor of the volume change is [tex]\frac{1}{4}[/tex]

Answer 2

The study of chemicals and bonds is called chemistry.

The correct answer is option A which is 1/4.

What is ideal gas law?The ideal gas law, also called the general gas equation, is the equation of the state of a hypothetical ideal gas. It is a good approximation of the behavior of many gases under many conditions, although it has several limitations

From the given problem, we are to find the factor number by which the volume of the compressed gas has changed. We apply Boyle's law to this problem because the condition of the reaction stipulates a constant temperature.

Boyle's law states "the volume of a given mass of gas is inversely proportional to its pressure provided that temperature remains constant". Mathematically, it is expressed as:

P₁V₁ = P₂V₂

Where

P₁ is initial pressure on the gasV₁  is the initial volume of the gasP₂ is the final pressure of the gasV₂ is the final volume of the gas

From the problem, we are to find the factor through which the volume changed:

  P₁V₁ = P₂V₂

V₂ = [tex]\frac{P_1}{P_2}*V_1[/tex]

           

Now:

P₁ =  P₁

P₂ = 4P₁

Hence

V₂ = [tex]\frac{P_1}{4P_2}*V_1[/tex]

Therefore, the factor of the volume change is 1/4.

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Related Questions

Which two elements have properties that are the most similar?
A C and F
B He and Ne
C Al and Si
D N and S

Answers

Answer:

The answer to your question is letter b) He and Ne

Explanation:

Elements that have similar properties are placed in the same group in the periodic table.

So

A C and F  These elements do not have similar properties because C is in group 4A and F is in group 7A. This is not the right answer.

B He and Ne  These elements have similar properties becase they are in the same group (8A).

C Al and Si  These elements do not have similar properties because Al is in group 3A and Si is in group 4A. This is not the right answer.

D N and S These elements do not have similar properties because N is in group 5A and S is in group 6A. This is not the right answer.

which of the following do not have molecules in motion A. solids B. they all have molecules in motion C. liquids D. gases​

Answers

Answer:

B. They all have molecules in motion.

Explanation:

All substances have molecules in motion, this is because all substances have an average kinetic energy (temperature) of over 0 K.
They all have molecules in motion. Gases may be faster than the others, while solids are the slowest, but they’re still MOVING!

A person's
changes as he travels from the earth to space, but his __
__. remains the same.
mass, helght
welght, mass
helght, weight
mass, weight

Answers

Answer:

mass and height (i think)

Explanation:

Weight changes, because it’s based on gravity. Mass never changes.
Answer is weight, mass

what object is metal and has high density

Answers

any platinum jewelry (bracelets, necklaces, and rings)

Taro stated that when someone hits a golf ball with a club, the amount of energy the ball has changes, the amount of energy that the club has changes, and the total energy of the system that includes the ball and the club increases. Which best explains Taro’s error?

Answers

Answer:

The error in the statement of there is the increase in amount of energy is talking about.

Explanation:

In the given experiment two ball that is present has potential energy and is static in a place, were the club that hates the ball has a certain amount of kinetic energy present in it.

After hitting the ball that kinetic energy transferred to the ball while the club becomes constant. Hence there is only a transfer of energy that is taken place the overall energy of the system remains same, So no increase or decrease is observed in the system .

a positively charged subatomic particle

Answers

It’s a proton! Neutron is not charged and election is negatively charged

Answer:

A positively charged particle is proton which is in the nucleus of an atom.

Explanation:

arrange the following according to increasing density; solid, liquid, and gas

Answers

Answer:gas<liquid<solid

Explanation:

Density is defined as mass per unit volume of a substance.Solids have higher density whereas liquids have lower density.For ex-density of iron is greater than water. In increasing order of density of different states of matter = gas<liquid<solid

The arrangement
Gas
Liquid
Solid

PLSS HELP
Bella is reading a science text she sees two short symbols the first symbol is two letters:Na and a symbol is a single letter:F

What do these symbols represent?

A: Atoms
B: Types of energy
C: Different systems
D: Molecules

Answers

D: molecules. Hope this helps, let me know if I’m right

A chemical symbol uses two or one letter to depict the elemental atom in a periodic table or the reaction. The symbols Na (sodium) and F (fluorine) represent the atom. Thus, option A is correct.

What is an atom?

An atom is said to be the fundamental unit of the element that makes the molecule or the compound through chemical and intermolecular bonding. It is a matter that defines the specific element.

The atoms of the different elements are expressed by the chemical symbols, atomic numbers, and atomic masses. The symbol contains one or two letters of the alphabet that mostly resembles the name of the element. Na is a chemical symbol that resembles the atom of the sodium element, whereas F represents the atom of the fluorine element.

Therefore, in option A. the chemical symbols like Na and F represent an atom.

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Which factor affects kinetic energy but not potential energy?
Mass

Velocity

Elasticity

Height

Answers

Answer:

Mass

Explanation:

After fertilization, female cones become very:
sticky
light
O hard

Answers

Answer: Sticky and light

After fertilization, female cones become hard.

After fertilization, female cones become hard. This process happens in the life cycle of gymnosperms, where female cones are located in the upper branches of the trees. These cones are fertilized by pollen, which is delivered by the wind from the male cones. The question relates to how these female cones change after they have been successfully fertilized. Following fertilization, the cones, which contain seeds, mature and their scales become woody or hard to protect the developing seeds inside. This hardening process is crucial for the protection and eventual dispersal of the seeds. It contributes to the reproductive success of gymnosperm plants by ensuring that seeds are effectively protected until they are ready for dispersal.

Sodium, an explosive soft metal, and chlorine, a greenish poisonous gas, form an ionic bond between them to create sodium chloride, or table salt. This statement demonstrates that ionic bonds create substances that have ________ properties than the elements that created them.

A. similar B. different C. more D. less

Answers

Answer:

B.) different

Explanation:

Answer:

Option B different

Explanation:

As stated in the question, both sodium and chlorine are dangerous elements which can harm human. However, when they are joined by ionic bond to form sodium chloride. In generic term, sodium chloride is the table salt which is the main mineral constituent of the sea water and it is also a common mineral taken by human. This shows that the ionic bond can create substances which possesses different properties than the elements that created them.

this element is the only element that is shiny, mallable, and a good conductor of heat and electricity. it has a higher number atomic number than cesium but lower than radon​

Answers

Final answer:

Francium is the element between Cesium and Radon on the periodic table. It is shiny, malleable, and a good conductor of heat and electricity. Similar metals share these properties, including lithium, sodium, and potassium.

Explanation:

The element described is Francium, found between Cesium and Radon on the periodic table. It belongs to the main-group elements of the metal category which consists of elements that are shiny, malleable, and good conductors of heat and electricity. Francium, with an atomic number of 87, is higher than that of Cesium (55) but lower than Radon (86).

The physical properties of metals include being shiny, malleable, and good conductors of both heat and electricity. These characteristics differentiate metals from other classes of elements such as nonmetals and metalloids. Nonmetals are notable for appearing dull and being poor conductors of heat and electricity, while metalloids exhibit behaviors in between those of metals and nonmetals.

The elements in a similar category to Francium like lithium (Li), sodium (Na), and potassium (K) also share similar properties. They appear shiny, are malleable, ductile, and are excellent conductors of heat and electricity.

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Final answer:

The metallic element mentioned is shiny, malleable, ductile, and conducts heat and electricity, fitting the criteria of metals with atomic numbers between cesium (55) and radon (86).

Explanation:

The element described in the question is a metal. This is because it exhibits characteristics such as being shiny, malleable which can be shaped, ductile which can be drawn into wires, and is a good conductor of heat and electricity. The atomic number of this element is indeed greater than that of cesium, which is 55, and less than that of radon, which is 86.

Without additional context, there are multiple elements which fit these characteristics, including gold (atomic number 79), silver (atomic number 47), and copper (atomic number 29). All these metals share the properties described and fall within the specified range for atomic numbers, between cesium and radon.

The prefab question someone help please !

Answers

Answer:   " 0.69 g / mL "

____________________________________________

Explanation:  

______________________________________________

The "pre-lab question" given is:

_____________________________________________

"The volume of an unknown liquid is 15 ml, and the mass of the liquid and the graduated cylinder it is in is 55.2g.   If the mass of the graduated cylinder is 44.8g , what is the density of the unknown liquid? " .

____________________________________________

Note:  The volume of the unknown liquid is 15 mL ;  regardless of whether or not the "unknown liquid" is in the graduated cylinder.

The density of the unknown liquid is measured in:  "g / mL " ;  

  that is, "grams per mL" .

____________________________________________

Note:  "D = m / V " ;   that is;  "Density  = mass/ volume" ;

                                  that is:   ["Density = mass per 'unit volume' ]" .

____________________________________________

So;  to find the density, "D" , of the "unknown liquid" ;  we would have to find the "mass" of the "unknown liquid" by "subtracting" :

       the "known mass of liquid when the liquid is not in the cylinder";  that is:  " 44.8g" ;  From:

       the "known combined value of the: 'mass of the liquid PLUS the mass of the cylinder" ;  that is:  "55.2g" ;

→     " 55.2g - 44.8g = 10.4g " .

___________________________________________

So:   " D =  m / V " ; (55.2g - 44.8 g) / 15 mL  " ;

              =  (55.2g - 44.8 g) / 15 mL  " ;

              =  (10.4g) / 15mL  ;

____________________________________________

Note that the "Density" =  mass per "unit volume" ;

→ So:  D = m / V ;  in units of:  " g / mL " (grams per millileter) ;

            = (10.4g) / 15mL  ;

             = [ (10.4) / 15 }  g/ mL ;  

            =  0.693333333333333.... g / mL  ;

       →  We round to "2 (two) significant figures" ;

       → since we have:  "10.4 g / 15 mL " ;

             and 15 mL is considered a measured/experimental value;

             and:  10.4g is considered a measured/experimental value;

→  so, the least precise value;  15 mL (has only 2 (two) significant figures ;

      compared to other value:  10.4g (which has 3 (three) significant figures;

→  so we shall round off to 2 (two) significant figures:

             =  0.69 g / mL

____________________________________________

              →  which is our answer:  " 0.69 g / mL " .

____________________________________________

The density of the unknown liquid, expressed as "0.69 g/mL," is found by calculating the mass of the liquid, subtracting the mass of the empty cylinder, and dividing by the given volume. The final answer is rounded to two significant figures to maintain precision.

The given problem involves calculating the density of an unknown liquid, and it can be summarized as follows:

The objective is to find the density (D) of the unknown liquid, given that its volume (V) is 15 mL. The total mass of both the liquid and the graduated cylinder is 55.2 grams, and the mass of the empty graduated cylinder is 44.8 grams. To determine the density, we utilize the formula D = mass (m) / volume (V), which is essentially defined as "mass per unit volume."

First, we find the mass of the unknown liquid by subtracting the mass of the empty cylinder (44.8g) from the combined mass of the liquid and the cylinder (55.2g), resulting in a mass of 10.4g.

Then, we calculate the density by dividing this mass (10.4g) by the given volume (15 mL). However, when dealing with significant figures, we consider that the volume measurement has only two significant figures (15 mL), while the mass measurement has three significant figures (10.4g). To maintain consistency, we round the result to two significant figures.

As a result, the density of the unknown liquid is determined to be 0.69 g/mL.

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A pumpkin has a volume of 10 cm and a mass of 8 g. what is the density of the pumpkin​

Answers

Answer: 0.8g/cm^3

Explanation:

In seeing your problem, I see an issue with your units for centimeter. The volume is in the third dimension, so we use cm^3 every single time for the volume. That way, we can arrive to the correct density (in g/cm^3)

Density = mass/volume and so

Density = 8g/10cm^3

= 0.8g/cm^3

The density of the pumpkin is calculated using the formula density (h₀) = mass (m) / volume (V) and with the values given (8 g for mass and 10 cm³ for volume) the density is 0.8 g/cm³.

To find the density of a pumpkin with a volume of 10 cm³ and a mass of 8 grams, you use the formula density (h₀) = mass (m) divided by volume (V). Since the mass of the pumpkin is given as 8 g and the volume as 10 cm³, you can calculate the density directly.

The formula looks like this : h₀ = m / V

So, plugging in the values :
h₀ = 8 g / 10 cm³
h₀₀ = 0.8 g/cm³

The density of the pumpkin is therefore 0.8 g/cm³.

This is a diagram of fossils found in one dry area with many plants. From looking at the fossils, what can we infer about this area in the past?

Answers

Answer: i would say C i hope it helps

How do simple machines make work easier?
They increase the distance of applied forces.
They change the strangth or direction of a force.
o They add energy to the work.
O
They reduce the speed of work.

Answers

Answer:

They increases the distance of applied force(torque)as well as they change the strenght or direction of a force(90 angle work).

Explanation:

Answer:

W=f× d

Increase the distance of applied forces

Explanation:

Increasing the distance between applied forces increases the work done on the machine which makes work easier..they change the direction and strength of the force.

10) A screwdriver has the density of 5.5 grams per cubic centimeter. It also has
the mass of 2.3 grams. What is the screwdriver's volume?

Answers

Answer:

v=m/d =2.3/5.5=0.42

Explanation:

The volume of the screwdriver will be 0.4182 cm³.

We have a screwdriver.

We have to determine the screwdriver's volume.

What is the relation between mass and density of any body?

The following relation exists between the mass and density of any body -

M = ρV

ρ - density of body.

V - volume of body

M - mass of body

According to the question -

ρ = 5.5 g/cm³

M = 2.3 g

Therefore -

V = M / ρ = 2.3 / 5.5 = 0.4182 cm³

Hence, the volume of the screwdriver will be 0.4182 cm³.

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You are measuring the mass of different chemicals to get ready to conduct an experiment.
Which one would be a example of the correct International System of Measurement units to use for measuring mass?
A) ounces
B) grams
C) pounds
D) tablespoons

Answers

Answer:

Explanation:

B

Answer: B) grams

Explanation:

Mass is the amount of matter contained in a substance.

It can be measured in units of kilograms (kg), grams (g), milli grams (mg) , pounds etc.These units are interconvertible.

International System of Measurement (S.I.) is the most commonly used system. As we know that there are seven fundamental SI units which are used to find derived units . These are as follows:

1) Mass - Kilogram

2) Length - meter

3) Time - Seconds

4) Electric Current - Ampere

5) Amount of substance - Moles

6) Intensity of light - Candela

7) Temperature - Kelvin

Thus International System of Measurement units used for measuring mass is grams.

You often hear people, particularly sports announcers, talk about a "high rate of speed." What do you think they mean? According to the specific definitions of physics terms, what are they really saying?

Answers

Answer:

Explanation:

High rate of speed as used by most announcers is actually not correct. Speed is the rate at which distance changes with time. Speed already expresses a rate. What one can deduce is that they probably meant to emphasize more on the how fast a sport is proceeding. Ordinarily saying speed would have been fine.

According to physics, the rate of change of speed is acceleration. Acceleration is the change in velocity with time. A body is said to be accelerating if its velocity is constantly changing.

Final answer:

When sports announcers refer to a "high rate of speed," they typically mean an object is moving quickly. In physics, 'speed' measures how fast an object moves, without direction, and is a scalar quantity. Conversely, 'velocity' includes both speed and direction and is a vector quantity.

Explanation:

When people, especially sports announcers, talk about a "high rate of speed," they are typically referring to an object, such as an athlete or vehicle, moving quickly. However, in physics, speed is a scalar quantity that measures how fast an object is moving without regard to direction, whereas velocity is a vector quantity that includes both the speed and the direction of an object's movement.

Speed can be understood as the rate at which distance is covered over time. To calculate the average speed, you would divide the total distance traveled by the elapsed time. Thus, when someone mentions a "high rate of speed," they likely mean that an object is covering distance rapidly, though they might be unintentionally conflating speed with velocity.

In the context of a race, a higher percentile speed means a faster run. For example, if the 40th percentile of speeds in a race is 7.5 miles per hour, it means that 40% of runners have a speed that is less than or equal to 7.5 miles per hour.

Which of the following is true about nuclear fission?

Question 2 options:

If you add the masses of all the products after fission, they are GREATER than the mass of the reactants.


If you add the masses of all the products after fission, they are the SAME as the mass of the reactants.


If you add the masses of all the products after fission, they are LESS than the mass of the reactants.


The mass of the products is 100 times greater than the original nucleus.

Answers

Answer:

If you add the masses of all the products after fission, they are LESS than the mass of the reactants.

Explanation:

A nuclear fission reaction is a radioactive reaction which in which a heavy nucleus spontaneously disintegrates into 2 lighter nuclei and some neutrons with a release of large amount of energy.

When nuclear fission occurs, a mass deficit between the decaying nuclei and the product occurs. It is this mass that actually yields the energy that is produced as a by product of the reaction.

I have 2 electrons in first shell 8 in the second shell and 6 in 3 shell

Answers

Final answer:

The electron configuration for the given atoms involves two electrons in the first shell, eight electrons in the second shell, and six electrons in the third shell.

Explanation:

The given information states that there are 2 electrons in the first shell, 8 electrons in the second shell, and 6 electrons in the third shell. From this, we can determine that the subject of this question is electron configuration. The electron configuration is the distribution of electrons in the various energy levels or shells around an atom's nucleus. In this case, the electron configuration can be represented as 2 electrons in the first shell (n=1), 8 electrons in the second shell (n=2), and 6 electrons in the third shell (n=3). So, the correct answer is shells 1 and 2 are full, and shell 3 has nine electrons.

Methanol (CH3OH) is the fuel used by racecars in the Indianapolis 500. It burns in the engine according to the equation below.
How many moles of oxygen gas are necessary to react completely with 425 moles of methanol?
2CH3OH() + 302(g) → 2CO2(g) + 4H2O(g)

Answers

Answer:

637.5

Explanation:

The reaction is balanced so using the coefficients you have that 2 moles of methanol reacts with 3 moles oxygen.

moles of oxygen = 3/2 moles of methanol

moles of oxygen = 3/2 *425 = 637.5 moles

Answer:

637.5 moles of oxygen gas are necessary to react completely with 425 moles of methanol.

Explanation:

You know the following equation:

2 CH₃OH(l) + 3 O₂(g) → 2 CO₂(g) + 4 H₂O(g)

Observing the stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction),  you can see that to react with 2 moles of methanol, you need 3 moles of oxygen gas (O₂).

The rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them. That is, what is intended with it is to find the fourth term of a proportion knowing the other three. Remember that proportionality is a constant relationship or ratio between different magnitudes.

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) , the direct rule of three must be applied. To solve a direct rule of three, the following formula must be followed:

a ⇒ b

c ⇒ x

Then:

[tex]x=\frac{c*b}{a}[/tex]

Then, the rule of three is applied to calculate the amount of moles of oxygen gas to react completely with 425 moles of methanol, knowing the stoichiometry of the reaction. This rule applies as follows: if by stoichiometry 2 moles of methane must react with 3 moles of oxygen gas, when 425 moles of methanol react how many moles of oxygen gas are needed?

[tex]moles of oxygen gas=\frac{425moles of methanol*3moles of oxygen}{2 moles of methanol} \\[/tex]

moles of oxygen gas=637.5

Then, 637.5 moles of oxygen gas are necessary to react completely with 425 moles of methanol.

Compare 1 mole of H2, 1 mole of O2, and 1 mole of F2. (a) Which has the largest number of molecules? Explain why. (b) Which has the greatest mass? Explain why.

Answers

a) Answer:

Number of molecules in 1 mole

Explanation:

a) Whether we take any of the substance among all three of the given substances they will have the same number of molecules in 1 mole of the substance is considered and the value for this will be [tex]6.023 x 10^23[/tex]

b)  Answer:

In the given question mass of the substance which is greatest is asked for one mole and we also know that mass of one mole is given by molar mass.  

Explanation:

b) It is known that [tex]31.98g/mol[/tex] is the molar mass for oxygen which is greater than that of hydrogen while fluorine has a molar mass of [tex]38.0 g/mol[/tex] which on comparison shows that, it is the highest amongst all three.

Final answer:

All three substances (H2, O2, and F2) have the exact same number of molecules in 1 mole due to Avogadro's number of 6.022 x 10^23. The molar masses define the total mass of 1 mole of any element, with F2 (Fluorine) having the highest molar mass and thus the greatest mass in 1 mole.

Explanation:

Comparing 1 mole of H2, 1 mole of O2, and 1 mole of F2, the first thing to know is that one mole of any substance contains the same number of entities (atoms, molecules, ions, etc.), known as Avogadro's number, which is 6.022 x 10^23. Hence, all three substances (H2, O2, and F2) contain the exact same number of molecules if you have 1 mole of each.

When comparing the masses of 1 mole of H2, O2, and F2, we consider the molar masses. The molar mass of an element (in g/mol) is numerically equal to the element’s atomic weight. Therefore, the molar mass of H2 (Hydrogen) is 2 g/mol, O2 (Oxygen) is 32 g/mol, and F2 (Fluorine) is 38 g/mol. So, 1 mole of F2 has the greatest mass because it has the highest molar mass.

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A vase is said to be solid platinum it is found to displace 18.65 mL of water and has a mass of 157 g what is the density of the vase

Answers

Answer:

density of the vase = 8.418 g / mL

Explanation:

Density is equal to mass of the platinum vase divided by the volume of water displaced.

density = mass / volume

density of the platinum vase = 157 g / 18.65 mL = 8.418 g / mL

Final answer:

The density of the vase can be found using the formula ρ = m ÷ V, which with the given mass of 157 grams and volume of 18.65 mL, results in a density of 8.42 g/mL.

Explanation:

The student is asking how to find the density of a vase that seems to be made of solid platinum, given its mass and the volume of water it displaces. The formula for density (ρ) is mass (m) divided by volume (V), so to find the density of the vase, you would use the given mass of 157 grams and the volume of displaced water which is 18.65 mL (which is equal to the volume of the vase).

Therefore, the density of the vase is 157 g ÷ 18.65 mL = 8.42 g/mL.

Comparing this density to reference values for various materials can help to confirm if the vase is indeed made of platinum, as platinum has a density of approximately 21.45 g/cm³ (or 21.45 g/mL).

A scientist has a sample of a substance that could be magnesium, sodium, stainless steel, or copper. Name two properties the scientist could use to identify the substance and explain why the scientist could use each property to identify the substance.

Answers

Answer:

The answer to your question is: below

Explanation:

Reaction with water, sodium is very reactive, sometimes explosive with water, so we can identified it from the other metals. Magnesium is less reactive than sodium, but in the presence of water it can produce bubbles.

Then we can identify copper and stainless steel because of the shine and they conduct electricity (conductivity).

4. The vet instructed Manuel to give his
dog .5 milligrams of medication per 1
kilogram of the dogs weight. His dog
weighs 12 kilograms. How much total
medication should the dog have?

Answers

Answer:

=60 milligrams

Explanation:

12 x 5

=60 milligrams

Have a nice day!!!!!!! :-)

KA

The branch of science which deals with medicine is called immunology.

The correct answer is 60.

To solve this question, we have to check the weight and the dosage given to the dog.

The data is given in the question.

Weight of dog - 12 kgDosage - 5milligrams.

To solve this question we have to multiply the weight and dosage.

[tex]12*5 =60miligram[/tex]

Hence, the correct answer is 60milligram.

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assuming gasoline can be represented as C8H18, how much oxygen is needed to completely burn this fuel. answer in grams of oxygen per gram of gasoline​

Answers

Answer:

3.51 g of oxygen per gram of gasoline is required.

Explanation:

Solution:

First of all we will write the balance chemical equation.

C8H18 + 12.5O2 → 8CO2 + 9H2O

This equation shows that,

1 mole of gasoline react with 12.5 mole of oxygen for complete burning.

mass of one mole of gasoline = 8×12 + 18×1 = 114 g

mass of 12.5 mole of oxygen = 12.5 (16×2) = 400 g

Formula:

mass of oxygen per gram of gasoline = (400 / 114) = 3.51

so, 3.51 g of oxygen require for per gram of gasoline.

how do you convert 250.6 mg to ounces​

Answers

It’s 0.0088 just use the calculator you can find on the internet. It’s easier than learning how to do it only to forget it later.

3. Some scientists create
new materials not
found in nature, such as
special fabrics, metal
and carbon alloys, and
plastics. Choose a
material that you think
isn't found in nature.
Then describe its useful
properties.

Answers

Final answer:

Plastics are artificial materials not found in nature, made from polymers. They're lightweight, resistant to moisture, moldable, and possess high insulation properties, thus are used in many industries.

Explanation:

One example of a material not found in nature is plastic. Plastics are polymers, which are long chains of molecules, created from smaller molecules called monomers. Plastics possess remarkable properties including their light weight, resistance to moisture, and their ability to be molded into different shapes. They also have high electrical and thermal insulation properties. These attributes make plastics an indispensable material in various industries, including packaging, automotive, electronics, and more.

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Final answer:

Plastic is a man-made material with unique properties like durability and flexibility.

Explanation:

Plastic is a material not found in nature that has useful properties such as being lightweight, durable, and easily molded into different shapes. One example is polyethylene, which is commonly used in plastic bags due to its flexibility and strength. Another example is polycarbonate, known for its impact resistance and optical clarity.

A pharmacist measures the mass of a powdered drug. The mass is 506 mg . What is the mass in grams? Write your answer as a decimal.

Answers

Answer:

0.506 g

Explanation:

we know that one miligram is equal to 0.001 g or we can say that  one gram contain thousand miligram. so,

if the mass of drug is 506 mg then to convert it into gram we have to divide 506 mg into 1000.  

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