M Prep | MCAT 2015 Question of the Day - Prep, Practice Questions, and More!

Q:

The balloon industry is experimenting with different heavier gases which can be used for non-floating balloons. The two gases are labeled gas A and gas B. Gas A is about 9 times heavier than gas B. Gas A was placed in a standard balloon and tested to effusion speed. The gas was found to have a effusion speed of k. What is the expected effusion speed of gas B? Assume that the mass of gas A per mol is M g/mol.

A

k/3

B

3k

C

9k

D

k/9