Question

Tungsten hexafluoride is one of the heaviest gases known, with a molar mass of 297.9 g/mol. At a
given temperature, how long will it take WF
6
to cover the distance H
2
can travel in 25 seconds

Answer 1

Molar mass H2 = 2g/mol
297,9 / 2 = 148.95
t = 148,95 * 25 = 3723.75 seconds