Question

A gas diffuse at a rate which is twice that of another gas B. The ratio of molecular weights of A to B is.

• A. 1.0
• B. 0.75
• C. 0.50
• D. 0.25

Answer 1

Answer: (D)

0.25

Answer 2

$= \frac { 1 } { ( 2 ) ^ { 2 } }$ $= \frac { 1 } { 4 } = .25$