0.16g of methane when burnt increases the temperature of 100g of water by 40°C, what is the heat of combustion of methane if the heat capacity of water is 4.2 Jg^-1 °C^-1? (CH4=16).

• A.1, 160kJmol^-1
• B.1, 180kJmol^-1
• C.1, 560kJmol^-1
• D.1, 600kJmol^-1
• E.1, 680kJmol^-1