A 12.0-g sample of helium gas occupies a volume of 14.4 L at a certain temperature and pressure. What volume does a 24.0-g sample of neon occupy at these conditions of temperature and pressure?

Question

Quizplus · Accepted Answer

According to Avogadro's law, equal volumes of gases at the same temperature and pressure contain an equal number of molecules. Therefore, the volume of the neon sample will be twice the volume of the helium sample, since neon has a molar mass that is twice that of helium.

A 120-G Sample of Helium Gas Occupies a Volume of 14