The Following Gases Are Stored in Identical Flexible Containers at 25°C

The following gases are stored in identical flexible containers at 25°C and 1.00 atm pressure.Order the gases from highest to lowest density.
1) 200 g propane,C₃H₈
2) 100 g carbon dioxide,CO₂
3) 50 g nitrous oxide,N₂O

A) 1 ≈ 2 ≈ 3
B) 3 > 2 > 1
C) 1 > 2 > 3
D) 2 > 1> 3
E) 1 > 2 ≈ 3