How many grams of O2 are needed to react with 13.6 g of NH3

The dissociation reaction of weak acid is

[tex]HA_{aq} +H_{2}O_{l} \rightleftharpoons H_{3}O^{+} +A^{-} _{aq}[/tex]

For strong acid dissociation reaction is given by

[tex]HA_{aq} +H_{2} O_{l}\rightarrow H_{3}O^{+}+A^{-} _{aq}[/tex]

Dissociation is a reaction in which acid release its hydronium ion in water. Dissociation of acid depends on the kind of solvent that are there with acids.

Strong acid dissociates at is fullest, means all the hydronium ions releases from acid so it is irreversible reaction, rate of dissociation of acid is very high. Hydrochloric acid is example of strong acid.

Whereas in case of weak acid, It does not dissociate at its fullest level, its dissociation is poor. The rate of dessociation of acid is very low. Acetic acid is an example of weak acid. Dissociationin weak acid is a reversible process.

Thus dessociation of weak acid is poor while in case of strong acid it is very high.

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A weak acid partially dissociates in water, for example, CH₃COOH forms CH₃COO⁻ and H⁺. A strong acid fully dissociates, like HCl into H⁺ and Cl⁻. HCl is a stronger acid than HF, and in a neutralization reaction, H⁺ reacts with OH⁻ to form water.

Chemical reactions involving acids can be represented by their ionization in water. A weak acid like acetic acid  (CH₃COOH ) partially dissociates in water to form CH3COO⁻ and H⁺ ions:

CH₃COOH(aq) + H₂O(l) ↔ CH₃COO⁻(aq) + H⁺(aq)

A strong acid such as hydrochloric acid (HCl) fully dissociates in water to give H⁺ and Cl⁻ ions:

HCl(aq) → H⁺(aq) + Cl⁻(aq)

Answering the specific question on which of the two acids HCl(aq) or HF(aq) is stronger: HCl(aq) is the stronger acid since it completely dissociates in solution, whereas HF(aq) partially dissociates, making it a weak acid.

For the neutralization of a strong acid with a base, the net ionic equation generally represents the reaction between hydrogen ions and hydroxide ions to form water. An example of such a reaction is:

H⁺(aq) + OH⁻(aq) → H₂O(l)

Answer:

C. Combustion

Explanation:

Combustion- an organic compound containing carbon, hydrogen and sometimes oxygen reacts  with oxygen gas to form carbon dioxide and water.

Answer:

Aluminum Chloride

Explanation:

Answer:

Li⁺

Explanation:

Li⁺ ions has a noble gas electron configuration because it resembles that of He.

To have a noble configuration, electrons in the outermost shell must completely fill their respective orbitals.

Li⁺ is an ion that has lost one electron from the usual number of 3 thereby remaining 2 electrons.

 The electronic configuration is given as;

         Li⁺       1s²

The S orbital can hold a maximum number of just two electrons.

     Helium atom has two electrons with electronic configuration of  1s²

Therefore      Li⁺   =    1s²    =    He

The Li+ ion has a noble gas electron configuration, which mirrors the electron configuration of helium (He) by having two electrons in the 1s subshell after losing one valence electron.

The Li+ ion has a noble gas electron configuration. Lithium (Li) has an atomic number of 3, which corresponds to three electrons in a neutral atom. These three electrons are arranged in the 1s subshell (two electrons) and the 2s subshell (one electron), giving lithium an electron configuration of 1s²2s¹. When lithium loses its one valence electron, it forms a Li+ cation with a configuration of 1s², which mirrors the electron configuration of the noble gas helium (He). Since lithium is an alkali metal in Group 1A of the periodic table, it tends to form a 1+ charge when it becomes an ion, which is indicated by the noble gas electron configuration it achieves as Li+.

Answer:

7.625g/cm³

Explanation:

Density = mass/volume

Volume of the block=2cm×2cm×4cm=16cm³

Mass of the block=122g

Density=122/16

=7.625

Therefore, the density of the block is 7.625g/cm³

Answer:

A

Explanation:

Let's illustrate this; see the attachment.

We see that Mrs. Jacobson is pushing to the right with a force of 100 N and there is another opposite force pushing with a force of 15 N. Since these are in opposite directions, we can say that the force opposite to Mrs. Jacobson is pushing the fridge -15 N to the right (instead of 15 N to the left).

The net force would then be:

100 N + (-15 N) = 85 N to the right

The answer is A.

Answer:

85 N to the right

Explanation:

Convention: rightwards positive

Force applied by Mrs. Jacobson:

+100

Force applied by the fridge:

-15

Net force

+100 - 15

+85

Answer:

Explanation:

The law of multiple proportions states that, when two elements can react with each other to form two or more different compounds, the weights of one element that react with a fixed weight of the other are in a ratio of small whole numbers.

1. If the mass of product obtained were 22.0g

Then, the mass of the oxygen atoms in the product would be:

The ratio of the weight of oxygen to the weight of carbon is 16.0 g to  6.0 g,

2. If the mass of product obtained were 14.0g.

3. Conclusion

Take a fixed amount of carbon equal to 3 grams.

Then, the amount of oxygen for the first compound would be 8 grams and the amount of oxygen for the second compound would be 4 grams.

That means that the ratio is 8 : 4 = 2.

Which is saying that, for the two compounds of carbon and oxygen, the weights of oxygen that reacts with a fixed weight of carbon are in a ratio of small whole numbers, in accordance to the law of multiple proportions.

Answer:

Endothermic reaction

Explanation:

Baking a bake batter in an oven is a typical endothermic reaction because it absorbs heat to drive a chemical change.

The heat changes that accompanies a chemical reaction can be categorized as either exothermic or endothermic.

In baking a cake batter, the oven furnishes it with a high temperature which drives a chemical change there in. This kind of reaction that absorbs energy from the environment is an endothermic reaction.

Answer:

Sample Response: Baking a cake requires heat to be applied to the batter in order for it to cook and chemically change into cake. The energy or heat applied is absorbed by the ingredients, so this represents an endothermic reaction.

Answer:

cells; energy

Explanation:

Answer:

All organisms are made up of cells, the basic unit of structure and function. Homeostasis is the ability to do work and allows living things to perform all the functions necessary to live.

Explanation:

Cells are the building blocks of all life and make up the structure and allow an organism to function properly. Homeostasis defines the second term. Hope this helps, have a great one!

Answer:

There are 0.239 moles of water in 1.44 x 10^23 molecules

Explanation:

We use the Avogadro´s Number, whereby in 1 mole of any substance there are 6, 023x10e23 molecules:

6, 023x10e23 molecules-----1 mol water

1.44 x 10^23 molecules -----x=

x= ( 1.44 x 10^23 molecules x 1 mol water)/6, 023x10e23 molecules

x=0,239 mol water

Answer

7.2 g of Oxygen are needed to produce 0.400 mole Fe₂O₃ in the following reaction

Explanation:

4 Fe(s) + 3O₂= 2 Fe₂O₃(s)

4 moles of Fe reacts with 3 moles of oxygen to give 2 moles of Fe₂O₃

to get the grams of oxygen needed to produce 0.400 mole Fe₂O₃ in the following reaction

we first get the moles then convert it to grams

3 moles of oxygen are needed to give 2 moles of Fe₂O₃ in the equation thus we have 3:2

let the represent the moles of oxygen that will be intended for 0.400 mole Fe₂O₃ in the following reaction

x:0.4

3:2=x:0.4

3/2 = x/0.4

cross multiply

3x0.4 = 2x

1.2 = 2x

x= 1.2/2 = 0.6

moles is 0.6

1 mole of Oxygen is 12g of Oxygen

0.6 mole of oxygen will give = 0.6 x12= 7.2 g of Oxygen

7.2 g of Oxygen are needed to produce 0.400 mole Fe₂O₃ in the following reaction

To produce 0.400 moles of Fe₂O₃, 95.8 g of O₂ are needed.

Let's consider the following balanced equation.

4 Fe(s) + 3 O₂(g) ⇒ 2 Fe₂O₃(s)

We can calculate the grams of O₂ needed to produce 0.400 moles of Fe₂O₃ considering the following relationships.

[tex]0.400molFe_2O_3 \times \frac{159.69gFe_2O_3}{1molFe_2O_3} \times \frac{3molO_2}{2molFe_2O_3} = 95.8 gO_2[/tex]

To produce 0.400 moles of Fe₂O₃, 95.8 g of O₂ are needed.

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How many grams of O₂ are needed to produce 0.400 mole Fe₂O₃ in the following reaction?

4 Fe(s) + 3 O₂(g) ⇒ 2 Fe₂O₃(s)

Answer:

Gold.

Explanation:

The specific heat is the measure to determine which material needs a lesser amount of energy to rise its temperature. Specific heats are described below:

Aluminium: [tex]903\,\frac{J}{kg\cdot ^{\circ}C}[/tex]

Gold : [tex]129\,\frac{J}{kg\cdot ^{\circ}C}[/tex]

Water: [tex]4184\,\frac{J}{kg\cdot ^{\circ}C}[/tex]

Wood: [tex]1300\,\frac{J}{kg\cdot ^{\circ}C}[/tex]

Gold reports the lowest specific heat and, hence, requires the least energy to raise its temperature 7°C.

Answer:

8.03L

Explanation:

Given parameters:

Initial volume, V₁  = 8.7L

Initial temperature T₁  = 50°C , in Kelvin gives 50+273  = 323K

Final temperature T₂ = 25°C, in Kelvin gives 25 + 273  = 298K

Unknown:

Final volume V₂  = ?

Solution:

Since we are dealing with volume and temperature relationships under constant pressure, we simply apply the Charles's law.

Charles's law states that "the volume of a given mass of gas is directly proportional to the temperature provided the pressure remains constant".

Mathematically, we have;

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

where V andV T are volume and temperature, 1 and 2 are initial and final states.

Input the parameters and solve for V₂;

            [tex]\frac{8.7}{323} = \frac{V_{2} }{298}[/tex]

          V₂  = 8.03L

Answer:

B

Explanation:

Answer:

β the answer is β

Explanation:

The shift often happens when heat is applied or removed at a specific temperature, also referred to as the substance's melting or boiling point. The temperature at which a substance transforms from a solid into a liquid is known as the melting point.

The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature. Thermometers are calibrated using a variety of temperature scales, which historically defined distinct reference points and thermometric substances.

When a substance immediately transitions from the solid to gas state, it is said to sublimate. Deposition is the opposite of sublimation, occurring when a substance changes from a gaseous state to a solid state.

For instance, you have undoubtedly seen the simple processes of forming ice, melting ice, and boiling water to cause freezing, melting, and vaporization. Cold beverage containers frequently develop condensation on their exteriors. When this happens, the liquid on the container's surface is created straight from the humid air.

Thus, The temperature at which a substance transforms from a solid into a liquid is known as the melting point.

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Answer: The answer is C

Explanation:

Answer: Trade winds are caused by the strong warming and evaporation within the atmosphere around the equator. (1) Around the equator, the warm air rises rapidly, carrying a lot of moisture.

Answer:

The Coriolis Effect.

Explanation:

combination with an area of high pressure, causes the prevailing winds—the trade winds—to move from east to west on both sides of the equator across this 60-degree "belt.

Answer:

Explanation:

1. geologists using a seismograph to record vibrations moving through the Earth.

2. chemists using a computer program to analyze data from their experiments.

3. physicists using a water tank to observe the way waves interact with a model rehi.

Those three clearly describe the role of technology in science because all those researchers are using those technological equipment's for their scientific research to get an outcome (Result).

Chemists analyzing data, physicists observing wave behavior, and geologists recording seismic activity are all examples of technology being used in science.

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Answer:

(OH-)=1x10^-12 M

Explanation:

Both pH and pOH have a relationship to belonging to the same aqueous solution: the expression of the Kwater (ionic product of the water Kw) is used:

(H3O+) x (OH-) = 1x10^-14

(0,010) x (OH-)= 1x10^-14

(OH-)=1x10^-14/(0,010)

(OH-)=1x10^-12 M

Final answer:

To raise the temperature of a 55.0 g sample of water by 65.0°C, 14943 joules of heat energy is required, calculated using the specific heat capacity of water and the formula for heat energy.

Explanation:

The student asks about the quantity of heat energy needed to raise the temperature of a given sample of water. To calculate this, we will use the formula Q = m × c × ΔT, where 'Q' is the heat energy in joules (J), 'm' is the mass of the water in grams (g), 'c' is the specific heat capacity (4.18 J/g°C for water), and 'ΔT' is the change in temperature (°C).

In this scenario, the mass of water is 55.0 g, and we want to heat it by 65.0 °C. Therefore, we calculate the heat energy required as follows:

Q = 55.0 g × 4.18 J/g°C × 65.0 °C

Q = 55.0 × 4.18 × 65.0

Q = 14943 J

So, 14943 joules of heat energy is required to raise the temperature of a 55.0 g sample of water by 65.0°C.

Answer:

I believe it goes to the left

Explanation:

GOOGLE it or ask me for more questions :)

Answer:

A

Explanation:

B is incorrect because asexual reproduction produces an offspring exactly the same as it's parent. Thus the probability does not need to be calculated.

C and D logically do not make sense since B is incorrect and A is correct. I provided the explanation why it is incorrect above.

Thus A is the correct answer.

_________________________________________________

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Answer:

The new volumen of the solution is 500 ml.

Explanation:

A dilution consists of the decrease of concentration of a substance in a solution (the higher the volume of the solvent, the lower the concentration).

We use the formula for dilutions:

C1 x V1 = C2 x V2

V2= (C1xV1)/C2

V2= (400 ml x 2,5 M)/2,0M

V2= 500 ml

Answer:

1m

Explanation:

Answer: 287.8 cm3

Explanation:

Given that:

Initial volume of gas V1 = 350 cm3

Initial pressure of gas P1 = 740 mmHg

New volume V2 = ?

New pressure P2 = 900 mmHg

Since, pressure and volume are involved while temperature is constant, apply the formula for Boyle's law

P1V1 = P2V2

740 mmHg x 350 cm3 = 900mmHg x V2

V2 = (740 mmHg x 350 cm3) /900mmHg

V2 = 259000 mmHg cm3 / 900mmHg

V2 = 287.8 cm3

Thus, the gas will occupy 287.8 cubic centimeters at the new pressure.

Answer:

a dozen eggs is 12 eggs. Three dozen is 36 eggs. so no

Explanation:

Final answer:

To make a 1.35 L solution, 0.189 mol of sodium hydroxide (NaOH) is required.

Explanation:

To find the number of moles of sodium hydroxide (NaOH) required to make a 1.35 L solution, we first need to determine the concentration of the solution in mol · dm-3. Given that 3.5 g of NaOH is dissolved in 2.5 dm3 of water, we can calculate the concentration using the formula:

Concentration (mol · dm-3) = moles of solute / volume of solution (dm3)

Concentration = (3.5 g / 39.997 g/mol) / 2.5 dm3 = 0.14 mol · dm-3

Now, to find the number of moles of NaOH required for a 1.35 L solution, we can use the formula:

Moles of solute = concentration · volume (L)

Moles of NaOH = 0.14 mol · dm-3 × 1.35 L = 0.189 mol

Burning of wood is a combustion reaction and the metabolism of glucose in your cells is cellular respiratory reaction.

Cellular respiration releases stored energy in glucose molecules and converts it into a form of energy that can be used by cells.

Cellular respiration is the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.

Wood as well as many common items that combust are organic (i.e., they are made up of carbon, hydrogen and oxygen). When organic molecules combust the reaction products are carbon dioxide and water (as well as heat)

Similarities:

1. Combustion reaction and metabolism of glucose both require oxygen.

2. Combustion and metabolism of glucose both product carbon dioxide and water

3. Both produces by-products: After cellular respiration and combustion have gotten what they needed from the wood, there will be byproducts from the conversion. In the case of combustion, they are noxious gases like carbon monoxide. In the case of respiration, the sugar molecule is broken into two molecules of pyruvic acid.

4. Catalyst: While breaking apart the bonds to release the stored energy either combustion or sugars for respiration the bonds will not broken by themselves. In each case, a catalyst is required to start the reaction that will break the bonds apart. In the case of combustion, the catalyst is a spark. Wood are flammable, so the spark will ignite the burning, breaking apart the bonds and releasing the energy. For respiration, enzymes are used to break the sugar molecule apart.

Differences

1. Glucose metabolism produces a chemical energy, while combustion produces light and heat energy.

2. Glucose metabolism is an endothermic reaction while combustion is an exothermic reaction (produces heat)

Answer:

Answer: C) Geothermal energy requires high subsurface temperatures that can be found west of the Mississippi River.

Explanation: i took the usa test prep and got it right!!

Answer:

Number of atoms = 22.58×1023

Explanation: