Phase Changes — Unit test Answers

What is the volume of 0.200 mol of an ideal gas at 200. kPa and 400. K?Use and .

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

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 .

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

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?

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

Which law is described by saying that when the pressure of a gas in a sealed container is cut in half, the gas will double in volume at a steady temperature?

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 .