Question

a) A closed tank of fixed volume initially contains air at 200 kPag (gauge) pressure and...

a) A closed tank of fixed volume initially contains air at 200 kPag (gauge) pressure and 20oC temperature. One (1.0) kilogram of air is added to the tank by an air compressor to bring the tank pressure to 300 kPag and temperature to 32oC. Find the tank volume. Specify any assumptions used.

b) To the same tank as above, a gas mixture containing CO and CO2 is added to replace the air. With 2 kg of the gas mixture added, a pressure gauge attached to the closed tank reads 20 kPag when the gas temperature is 27oC. Determine the molar composition of the gas mixture. Any assumptions used must be clearly stated.

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