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baherus [9]
3 years ago
14

Which statement best describes the compressibility of a gas? A Increasing the temperature of a gas decreases the pressure. B Inc

reasing the temperature of a gas increases the pressure. C Increasing the pressure on a gas decreases the volume. D Increasing the pressure on a gas increases the volume.
Chemistry
2 answers:
k0ka [10]3 years ago
8 0

The answer is C. Compressing the air reduces the volume and increases the pressure. Compressing the air causes the molecules to collide with one another, and with the walls of the container, at a higher frequency. This is becaue the number of molecules are still the same but now forced in a smaller volume of space. This why the pressure increases wiht reduced volume, while keeping the temperatures constant.

Iteru [2.4K]3 years ago
5 0

Answer: option C. Increasing the pressure on a gas decreases the volume.

Explanation:

Compressibility is the property of matter that relates the change (decrease) of volume under pressure (compression).

It is defined as the relative change in volume compared to a change in pressure.

Gases under normal conditions of pressure and temperature are highly compressible, since the molecules are widely separated.

You can see the inverse relation between pressure and volume in a gas by looking at the ideal gas equation:

pV = nRT

Hence, constant n, R and T means pV = constant, so as p increases V decreases, which leads to the conclusion stated by the option C: increasing the pressure on a gas decreases the volume.

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Answer is: volume will be 3.97 liters.

Boyle's Law: the pressure volume law -  volume of a given amount of gas held  varies inversely with the applied pressure when the temperature and mass are constant.

p₁V₁ = p₂V₂.

p₁ = 755 torr.

V₁ = 5.00 l.

p₂ = 1.25 atm · 760 torr/atm.

p₂ = 950 torr.

755 torr · 5 l = 950 torr · V₂.

V₂ = 755 torr · 5 l / 950 torr.

V₂ =  3.97 l.

When pressure goes up, volume goes down.

When volume goes up, pressure goes down.

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Is atomic weight a whole number or not a whole number
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Atomic mass of an element is not a whole number because It contains isotopes. For example, chlorine has two isotopes 1735Cl and 1737Cl with natural abundances in the approximate ratio of 3:1. Hence, the average atomic mass of chlorine is approximately 35.5 g/mol.

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In a process called photosynthesis, plants use carbon dioxide and water, along with energy from sunlight, to produce sugar and o
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24 molecules of H2O are needed by the plant to produce 4 molecules of sugar.

<h2>What is photosynthesis?</h2>

The process by which plants convert carbon dioxide, water, and sunlight into oxygen and sugar-based energy is known as photosynthesis.

<h3>The photosynthesis equation is as follows:</h3>

                   6CO2 + 6H2O + Sunlight → C6H12O6 + 6O2

The following three significant activities are involved in photosynthesis:

1. Chlorophyll absorbs light energy.

2. Water molecules are divided into hydrogen and oxygen and light energy is converted to chemical energy.

3. Carbon dioxide is converted to sugars.

         

Therefore, a plant needs four molecules of H2O and four molecules of CO2 to make one molecule of glucose or sugar, hence a plant needs 24 molecules of H2O and 24 molecules of CO2 to make four molecules of sugar.

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