unit 1 review

Which proportionality shows the result of combining Avogadro's law with Boyle's law?

B) V oc n/p

Which is a postulate of the kinetic-molecular theory?

Gas particles have a small volume relative to the spaces between them.

The volume of a gas decreases to half of its original volume, but the gas maintains the same number of moles and temperature. According to the ideal gas law, what will most likely happen to the pressure?

It will double.

Which statement describes a limitation of the kinetic-molecular theory for a gas?

The theory assumes that particles do not experience intermolecular forces

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another?

The volume stays the same, but the shape changes to fit the new container.

Which commercial technology commonly uses plasmas?

a television

At what temperature is the substance a heated gas?

above 100°C

In the diagram below, particles of the substance are moving from the liquid phase to the gas phase at the same rate as they move from the gas phase to the liquid phase. The gas and liquid are at

equilibrium.

If both gases are at the same temperature, which one has the greater pressure?

gas 2 because it has more particles that are colliding

Which quantity is held constant when working with Boyle's, Charles's, and Gay-Lussac's laws?

moles

The ideal gas constant, R has several different values that could be used. Which quantity causes these differences?

pressure

A scientist is examining a mixture of nitrogen, hydrogen, and ammonia. The individual pressures that are exerted by nitrogen and hydrogen are 0.26 atm and 0.28 atm, respectively. If the total pressure is 0.90 atm, what is the partial pressure of ammonia? Use mc016-1.jpg.

0.36 atm

A tire at 21°C has a pressure of 0.82 atm. Its temperature decreases to -3.5°C. If there is no volume change in the tire, what is the pressure after the temperature change? Use mc006-1.jpg.

0.75 atm

A gaseous substance turns into a solid. Which best describes this change?

A substance that has no specific volume changes to a substance that has a specific volume.

Which sequence represents the relationship between pressure and volume of an ideal gas as explained by the kinetic-molecular theory?

smaller volume --> crowded particles --->more collisions ----> higher pressure