List of practice Questions

A geyser heats water flowing at the rate of 3.0 litres per minute from 27 °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 × 104 J/g ?
What amount of heat must be supplied to \(2.0 × 10^–2\) kg of nitrogen (at room temperature) to raise its temperature by 45 °C at constant pressure ? (Molecular mass of \(N_2\) = 28; R = 8.3 J \(mol^{–1} K^{–1}\).)