Question

If I have 21 moles of gas held at a pressure of 78 atm and a temperature of 900 K, what is the volume of the gas?

Answer 1

Answer:   19.9 L

Explanation:  I know this because I had a test and this was one of the questions I had hoped this helps.

Answer 2

19.9 L

Explanation:

Given:

n = 21 mole, P = 78 atm , T = 900k ,

V = ? , R = 0.0821

Solution:

Ideal gas equation, PV = nRT

                                   V =  nRT / P

                                       = 21 × 0.0821 × 900/ 78

                                        = 19.89 L