China Western Medicine, Ketoconazole Cream, Find details about China Ketoconazole Cream, Western Medicine from Western Medicine, Ketoconazole Cream - Anhui Medipharm Co., Ltd. Sign In Join Free
To answer the question, pure ammonia has a density of ~0.7-0.9 g/L, depending on temperature. The density of air is ~1.2 g/L, again depending on temperature and pressure. So, yes, ammonia gas is lighter than air in terms of density. 3 people found this useful.
Carbon monoxide has a density that is about 97% that of air under normal room temperature. So, to answer the question, no, it is lighter than air. You would think, then, that it would rise. In real-world conditions, there are a lot of forces that cause the CO to mix rather completely into the air.