How many moles of CO2 gas are present in a 7.26 L vessel at a pressure of 347 torr and a temperature of 25 °C?

Answer 1

Ideal gas law:

PV = nRT

P = pressure = 347 torr

V = volume = 7.26 L

n = moles = ?

R = gas constant = 62.36 L-torr/K-mol

T = temperature in K = 25 + 273 = 298K

Solving for n...

n = PV/RT = (347 torr)(7.26L) / (62.36 L-torr/K-mol)(298K)

n = 0.136 moles CO₂