0.92g of ethanol raised the temperature of 100g water from 298K to 312.3K when burned completely. What is the heat of combustion of ethanol?

(C = 12, H = 1, 0 = 16, specific heat capacity of water = 4.2Jg^-1K^-1)

• A.+300KJmol^-1
• B.+3000KJmol^-1
• C.-300KJmol^-1
• D.-3000KJmol^-1