Three containers of equal volume are filled with three different gases. The first container is filled with Ar, the second with O2 and the third with CO2. The pressure and temperature of the three gases are the same. Which of the following is true of the gases in the three containers?

Question

Quizplus · Accepted Answer

According to the Ideal Gas Law (PV = nRT), where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature, the number of moles of gas in each container must be the same if the pressure, volume, and temperature are the same. The masses and densities will differ due to the different molar masses of Ar, O2, and CO2.

Three Containers of Equal Volume Are Filled with Three Different