Gas Laws

What is the definition of a gas?

• A gas is a state of matter with a fixed shape and volume.

• A gas is a state of matter with no fixed shape or volume, consisting of molecules that are far apart and move freely.

• A gas is a liquid that has evaporated due to heat.

• A gas is a solid that has melted due to heat.

What does the 'R' in the ideal gas law represent?

• The gas constant, which is 0.0821 L·atm/(K·mol).

• The universal gas constant, which is 8.314 J/(K·mol).

• The rate of reaction in chemical kinetics.

• The resistance of the gas to flow.

What is the significance of 6.02 x 10^23 in chemistry?

• It is Avogadro's number, representing the number of molecules in one mole of a substance.

• It is the atomic mass of carbon.

• It is the number of atoms in a liter of gas at standard temperature and pressure.

• It is the number of protons in a hydrogen atom.

What is the volume of 1 mole of gas at standard conditions?

• 24.0 L

• 22.4 L

• 20.0 L

• 18.0 L

What is the effect of increasing temperature on the volume of a gas at constant pressure?

• The volume decreases (Boyle's Law).

• The volume remains constant.

• The volume increases (Charles's Law).

• The volume fluctuates randomly.

According to Boyle's Law, what happens to the volume of a gas when the pressure is increased at constant temperature?

• The volume will increase.

• The volume will decrease.

• The volume will remain the same.

• The volume will fluctuate.

What is the relationship between temperature and kinetic energy of gas molecules?

• As temperature increases, the kinetic energy of gas molecules increases.

• As temperature decreases, the kinetic energy of gas molecules increases.

• Temperature has no effect on the kinetic energy of gas molecules.

• Kinetic energy of gas molecules is inversely proportional to temperature.

What is the definition of absolute zero?

• The temperature at which all molecular motion stops, equivalent to -273.15°C or 0 K.

• The temperature at which water freezes, equivalent to 0°C.

• The temperature at which a gas has maximum volume and kinetic energy.

• The temperature at which a substance changes from solid to liquid.

What is the ideal gas law equation?

• PV = nRT

• PV = nR/T

• P = nRT/V

• PV = RT/n

How do gas molecules move?

• Gas molecules move in a straight line only.

• Gas molecules move constantly and randomly.

• Gas molecules do not move at all.

• Gas molecules move in circular paths.