In a gobar gas plant, gobar gas is obtained by bacterial fermentation of animal refuse. It is found to contain mainly Methane and its heat of combustion given by the equation:
CH4(g) + 2O2(g) = CO2(g) + 2H2O(g)
is 809 kJ/mole. How much gobar gas would have to be produced per day for a small village community of 100 families, if we assume that each family has to be supplied 20,000 kJ of energy per day to meet on its needs. The Methane content in gobar gas is 80% by weight.