Which of the following gases is heavier than oxygen?
ACarbon dioxide
BAmmonia
CMethane
DHelium
Answer:
A. Carbon dioxide
Read Explanation:
Carbon dioxide has one carbon atom and two oxygen atoms, and a molecular weight of 44 grams per mole. The oxygen in the air is actually O2, or molecular oxygen, with a molecular weight of 32. Hence, carbon dioxide has a higher density, or is heavier than oxygen.
