Question

A sample of 0.1607 g of an unknown gas occupies 7.50 L at 125°C and 133 Torr.What is the identity of an unknown gas?

Answer 1

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

=