When 4.0 mol of oxygen are confined in a 20-L vessel at 76ºC, the pressure is 6 atm. What is the new pressure

Question

A. 2 atm
B. 3 atm
C. 4 atm
D. 8 atm

Answer 1

Check again your question. If you know the quantity of the gas - in moles- the volume and the temperature, you can find the pressure from the state equation of the ideal gases:

p*V = n*R*T =>

p = n*R*T/V =>

p = 4*0.082*(273+76)/20 =>

p = 5.7236 atm