Which cylinder at STP will contain the greatest mass of gas particles?

Question

Quizplus · Accepted Answer

At STP (standard temperature and pressure), the mass of gas particles in a container depends on the molar mass of the gas because the volume is the same for all options. Nitrogen (N2) has a higher molar mass (approximately 28 g/mol) compared to neon (approximately 20 g/mol), helium (approximately 4 g/mol), and hydrogen (approximately 2 g/mol). Therefore, a 5.0-L cylinder of nitrogen will contain the greatest mass of gas particles.

Which Cylinder at STP Will Contain the Greatest Mass of Gas