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

Question

Quizplus · Accepted Answer

At STP, one mole of any gas occupies 22.4 L of space. Therefore, the number of particles in each cylinder is determined by the number of moles present. Since all of the cylinders listed have the same volume of 5.0 L, the gas that will contain the most particles is the gas with the highest molar mass. However, none of the gases listed have significantly different molar masses, so they will all contain the same number of particles. Therefore, the answer is E, all of the cylinders above contain the same number of gas particles.

Which Cylinder at STP Will Contain the Greatest Number of Gas