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Question
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.
Solution
The amount of heat that 1 kg of fuel produces is its calorific value.
Now,
The heat produced by 4.5 kg of fuel = 180000 kJ
Therefore, heat produced by 1 kg of fuel = `180000/4.5 xx 1` kJ/kg
= 40,000 kJ/kg
Hence, the calorific value of the fuel is 40,000 kJ/kg.
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