(Solved): A container has a capacity of 0,09m^(3) and is filled with oxygen at a pressure of 420 kPa . The tem ...

A container has a capacity of

and is filled with oxygen at a pressure of 420 kPa . The temperature is

. Later the pressure drops to 300 kPa due to a leak while the temperature falls to

. Calculate: a) The mass of oxygen that was initially in the container (take

for oxygen as

. b) The amount of oxygen that leaks out.