Calculate the carbon footprint of a household, i.e. the total annual CO emissions of the household, assuming the household annually consumes (1) 1220 (1+12) kWh electricity 8 (the CO emission factor of electricity is assumed to be 0.21233kg CO Wh electricity), 8 kWh natural gas (natural gas is assumed to be the mixture of 88.00 vol % CH and (2) 12800 (1+ 16 12.00 vol% CH and has a heating value of (49.5787M9, 18 (3) 560 x (8/18) litres of petrol (petrol is assumed to be 100% CH with density of 0.74kg/litre), with density of 0.85kg/litre). (4) 410 (1+1) litres of diesel (diesel is assumed to be 100% 11.623 The molecular weights of C, H and O are to be taken as 12, 1 and 16, respectively.