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.​

Answer 1

Total mass of fuel = 4.5 kg

Total heat produced = 180,000 kJ

Heat produced by burning 1 kg of fuel = 180,000 kJ/4.5 kg = 40,000 kJ/kg.

So,

calorific value of fuel = 40,000 kJ/kg.

HOPE it helps :)

Answer 2

Heat produced by 4.5 kg of fuel =180000 KJ

Therefore , heat produced by 1kg of fuel =180000/4.5 ×1KJ/KG = 40000 KJ/KG

Hence , the calorific value of the fuel is 40,000 KJ/KG