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A cylinder of air occupies a volume of 30 litres. The temperature of the gas is 715celcuis and the pressure is 130kPa (see data table).

A cylinder of air occupies a volume of 30 litres. The temperature of the gas is 715celcuis and the pressure is 130kPa (see data table). 

Assume the gas constant of air is 287 Jkg-1K-1.

Calculate the mass of the air.

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