Page 2 - worksheet-1 thermodynamics

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8 What amount of heat must be supplied to 2.0 x 10-2 kg of nitrogen (at room temperature) to raise
its temperature by 45 °C at constant pressure? (Molecular mass of N2 = 28; R = 8.3 J mol-1 K-1.)
9 A geyser heats water flowing at the rate of 3.0 litres per minute from 2 7°C to 77°C. If the geyser
operates on a gas burner, what is the rate of consumption of the fuel if its heat of combustion is 4.0
x 104 J/g?
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