Four identical 1.0-L flasks contain the gases He,Cl 2 ,CH 4 ,and NH 3 ,each at 0°C and 1 atm pressure.
-Which gas has the highest density?

Question

Quizplus · Accepted Answer

The density of a gas is directly proportional to its molar mass under the same conditions of temperature and pressure. Cl₂ (molar mass ≈ 70.9 g/mol) has the highest molar mass compared to He, CH₄, and NH₃, making it the densest gas under the given conditions.

Four Identical 1