For this problem we are given and we know the following:
m = 0.1607 g
V = 7.50 L
T = 125 C = 398 K
P = 133 Torr
R = 62.3636 L.Torr.K/mol
To solve this problem we can use the following equation first:
pV = nRT
We can find the number of moles which will help us to find the molar mass and identify the unknown gas.
n = pV/RT
=
