## In an experiment 4.5 kg of a fuel was completely burnt. The heat produced was measured to be 180,000 kJ. Calculate the calorific value of the fuel.

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Answer
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Calorific value is calcualted as

Calorific Value = Heat / KG

Heat produced on burning 4.5 kg of fuel is 180000

Therefore,

Heat produced by 1 kg of fuel is = 180,000 / 4.5 = 40000

Hence the calorific value of fuel is 40000 kJ/kg