A 70 liter tank containing an ideal gas at a pressure of 40 atmospheres is connected by a valve to a 30 liter tank of an ideal gas at 70 atmospheres. The valve is opened slowly and the gases in two tanks mix. Assuming the temperature throughout is constant, what is the final pressure in the tanks?

Answer 1

I did one. You do one :)

Answer 2

Thank you for your assistance! =)