Help please): A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressures of the three gases in the tank are 35 atm of Oz, 5 atm of Ny, and 25 atm of He, what is the total pressure inside of the tank?

A 60atm
B 65atm
C 35atm
D 25atm​

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)