Question

The molecules of a gas A travel four times faster than the molecules of gas B at the same temperature. The ratio of molecular weights M_A/M_B will be:

• A. 1/16
• B. 4
• C. 1/4
• D. 16

Answer 1

Answer: (A)

1/16

Answer 2

$\frac { M _ { B } } { M _ { A } } = 16$

∴ $\frac { M _ { A } } { M _ { B } } = 1 / 16$