Question

All of the following are needed to accurately describe a gas except ___.

pressure

amount

energy

volume

temperature

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Question 2 0.2 pts

If temperature and amount are constant, as gas pressure increases, gas volume ___.

remains constant

varies

decreases

increases

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Question 3 0.2 pts

If temperature and volume are constant, as gas pressure increases, gas temperature ___.

changes

remains constant

increases

decreases

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Question 4 0.2 pts

If pressure and temperature are constant, as gas amount increases, gas volume ___.

increases

varies

decreases

remains constant

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Question 5 0.2 pts

The first scientist to conduct an experiment in which one variable was changed systematically while another variable was monitored was ___.

Charles

Torricelli

Avogadro

Boyle

Pascal

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Question 6 0.2 pts

The unit of temperature used in all gas comparisons (at standard conditions) and gas law calculations is the ___.

Celsius

Fahrenheit

Rankin

Kelvin

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Question 7 0.2 pts

The ideal gas law is ___.

PV = nRT

PT = nRV

Pn = VRT

PR = nVT

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Question 8 0.2 pts

Of the following, ___ is not an assumption in deriving the ideal gas law.

The combined volume of the particles of an ideal gas is much smaller than the volume occupied by the ideal gas.

The particles of an ideal gas do not interact with each other.

The particles of an ideal gas do not occupy space in their container.

The particles of an ideal gas move quickly, randomly, and independently of each other.

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Question 9 0.2 pts

Boyle's, Charles', and Avogadro's Laws all can be combined into a mathematical statement.

True

False

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Question 10 0.2 pts

The ideal gas law can be used to solve for gas density.

True

False

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Question 11 0.2 pts

The ideal gas law cannot be used to determine the molar mass of a gas.

True

False

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Question 12 0.2 pts

Gas laws cannot be combined with stoichiometric calculations.

True

False

Answer 1

1) To describe the gas, the properties like pressure, volune, amount and temperature needed. Energy is not describe the gas.

Ideal gas equation is PV=nRT

PV=(amount/mwt)RT

2) If temperature and amount are constant, as gas pressure iincreases volume decreases.

Since pressure is inversely proportional to volume.

3) If amount and volume is constant, as gas pressure increases, gas temperature increases, because pressure is directly proportional to temperature.

4) If pressure and temperature are constant, as gas amount increases,gas volume also increases, because volume is directly proportional to amount.

5) Boyle, the first scientist to conduct an experiment in which one variable was changed systematically while another variable was monitored. That is pressure is inversely proportional to volume,. Called as Boyles law.

6) The unit of temperature used in all gas comparisons is Kelvin.

7) Ideal gas law is PV=nRT.

8)The ideal gas law can be derived from the kinetic theory of gases and relies on the assumptions that (1) the gas consists of a large number of molecules, which are in random motion and obey Newton's laws of motion; (2) the volume of the molecules is negligibly small compared to the volume occupied by the gas; and (3) no forces act on the molecules except during elastic collisions of negligible duration. So here the particles of an ideal gas do not occupy space in their container is not an assumption of ideal gas law.

9) Boyle's, Charles', and Avogadro's Laws all can be combined into a mathematical statement is true, named as Ideal gas law.

10) The ideal gas law can be used to solve for gas density is true. Density=amount / volume, then ideal gas law becomes

P=(density/molar mass)RT.

11) The ideal gas law cannot be used to determine the molar mass of a gas is false. See above equation, we can calculate molar mass of gas.

12) Gas laws cannot be combined with stoichiometric calculations is False.