Question

A 50L cylinder is filled with argon gas to a pressure of 0130.0kPa at 30^oC. How many moles of argon gas are in the cylinder?

• A. 208
• B. 200
• C. 201
• D. 205

Answer 1

The correct option is C

201

Given P = 10130.0kPa

V = 50L

n = ?

R = 8.314 J K^-1 mol^-1

T=30^oC=30+273=303K

PV = nRT

or 10130 x 50 = n x 8.314 x 303

506500 = n x 2519.142

n = 506500/2519.142

n = 201.1mol.