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plz help me in this problem. and also tell me the correct answer which u have calculated. the prob is as under:

*"A gas is confined in a steel cylinder at 20 degree celcius and at a pressure of 5 atm.*

a) if the cylinder is surrounded by boiling water and allowed to come to the thermal equilibrium, how great will the gas pressure be?

b) if the gas is then allowed tp escape untill the pressure is again 5 atm, what fraction of the original gas (by weight) will escape?

c) if the temperature of the remaining gas in the cylinder is returned to 20 degree celsius, what will be its final pressure?"

a) if the cylinder is surrounded by boiling water and allowed to come to the thermal equilibrium, how great will the gas pressure be?

b) if the gas is then allowed tp escape untill the pressure is again 5 atm, what fraction of the original gas (by weight) will escape?

c) if the temperature of the remaining gas in the cylinder is returned to 20 degree celsius, what will be its final pressure?"

Thanks in advance