A group of general chemistry students were assigned to conduct gas experiments. ... ...

A group of general chemistry students were assigned to conduct gas experiments. The vessel that contained the gases had a small hole in it. The gases used in the experiments were SO2 and O2. What is the rate of leakage of SO2 to O2 through the hole?  
(A) 0.7
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 06. Gases