Please compute the accurate answer of the given Problem
Problem- A Tank contains methane at 1000 psia and 140F. Another tank of equal volume contain ethane at 500 psia and 140F. The two tanks are connected, the gases are allowed to mix, and the temperature is restored to 140F.
Part 1- Calculate the final pressure, the composition of the mixture, and the partial pressure of the composition at final condition. Do not assume that ideal gas equations apply.
I want help to find the final pressure of tank.