A gas based geyser heats water flowing at the rate of 5.0 litres per minute from 27ºC to 87ºC. The rate of consumption of the gas is_____ g/s.
(Take heat of combustion of gas $=5.0 \times 10^4 \mathrm{~J} / \mathrm{g}$ ) specific heat capacity of water $=4200 \mathrm{~J} / \mathrm{kg} .^{\circ} \mathrm{C}$
