General Chemistry

Question

If an ideal gas has a pressure of 9.03 atm a temperature of 485 K and a volume of 76.05 L how many moles of gas are in the sample?

n= mol

Answer 1

Use the ideal gas law: PV = nRT

P = pressure = 9.03 atm

V = volume = 76.05 L

n = moles = ?

R = gas constant = 0.0821 Latm/Kmol

T = temperature in K = 485K

Solving for n, we have...

n = PV/RT = (9.03 atm)(76.05 L) / (0.0821 Latm/Kmol)(485K)

n = 17.2 moles