Empirical Gas Laws

What happens to the volume of a fixed amount of gas at constant temperature if the pressure is doubled?

• the volume will be twice the original

• the volume will be 1/2 of the original

• the volume will not change

• the volume will be 1/2 more than the original

A balloon contains 7.20 L of He. The pressure is reduced to 2.00atm and the balloon expands to occupy a volume of 25.1L. Find the initial pressure exerted on the balloon.

Final answer in 3 significant figures with correct unit of measurement.

What happens to the volume of a fixed amount of gas maintained at constant pressure if the temperature (in ⁰C) is doubled?

• the volume will increase

• the volume will be doubled

• the volume will be the same as the original

• the volume will be halved

At constant pressure, a fixed amount of gas occupies a volume of 50.0mL at 298K. What will be its volume if the temperature is increased to 333K?

Express your answer in 3 SF and correct unit of measurement.

"At constant pressure and temperature, the volume of a gas is directly proportional to the number of moles of the gas."

• Charles's Law

• Boyle's Law

• Avogadro's Law

• Combined Gas Law

Name the gas law based on the given equation. Spelling must be correct. ALL CAPITAL LETTERS.

In combined gas law problems, only the _____ is held constant.

• volume of a gas

• amount of gas

• pressure of a gas

• temperature of a gas

In combined gas law calculations:

• pressures can only be in torr

• volumes can only be in liters

• temperatures can only be in Kelvin

• pressures can only be in kPa

Under which of the following volumes will a fixed amount of gas exhibit the greatest pressure at constant temperature?

• 0.01 L

• 0.10 L

• 1.00 L

• 1.50 L

Which of the following amounts of gas will occupy the greatest volume at constant pressure and temperature?

• 0.01 mol

• 0.10 mol

• 1.00 mol

• 1.50 mol