When 0.2 g of butanol was burnt in a suitable apparatus the heat evolved was sufficient to rise the temperature 200 g of water by `5^(@)C`. The heat of combustion of butanol in kcal/mole will be

When 0.2 g of 1-butanol was burnt in a suitable apparatus, the heat evolved was sufficient to raise the temperature of 200 g water by 5^(@)C. The values of enthalpy of combustion and calorific value of 1butanol are [kcal]

When 10 g of coal is burnt, it raises the temperature of 2 litres of water from 20^(@)C to 55^(@)C . Calculate the heat of combustion of fuel.

When 6g carbon is burnt in a sufficient amount of oxygen, the heat evolved is x KJ. The heat of combustion of carbons is

The heat liberated when 1.89 g of benzoic acid is burnt in a bomb calorimeter at 25^@C increase the temperature of 18.94 kg of water by 0.632^@C . If the specific heat of water at 25^@C is 0.998 cal/g-deg, the value of the heat of combustion of benzoic acid is