Two vessels containing 4dm^3 of argon and 10dm^3 of water
vapour respectively at 150 degree celsius and 101 kPa were
connected together.The connected vessels were allowed to cool to
room temperature.What was the final pressure in the connected
vessel?
Ans:20.3kPa
i used p1v1 + p2v2 = p3v3,couldn't get the answer..
Use PV=nRT to find the number of moles of argon only (before
connecting the vessels).
After connecting the vessels (ie. new combined volume),
apply PV=nRT with n = number of moles of argon only.
Solve for P.