Question

1. Samples of four gases are released in a room at the same time. The gases are carbon dioxide CO2, Hydrogen chloride HCl, Hydrogen sulfide H2S and nitrogen dioxide NO2.
Which gas diffuses fastest? (mass of CO2=44g, H2S=34g, NO2=46g)
A. Carbon dioxide.
B. Hydrogen chloride.
C. Hydrogen sulfide.
D. Nitrogen dioxide.

Answer 1

Explanation:

Option A carbon dioxide