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

Answer:

The calorific value =40000 kj/kg

Explanation:

The heat produced was measured to be 180,000 kJ.

Answer: 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.

Hence solved

Answer 2

Explanation:

The calorific value of fuel is the amount of heat produced by the complete combustion of 1 kg of fuel.

Now,

Heat produced by 4.5 kg of fuel = 180000 kJTherefore, heat produced by 1Kg of fuel = 180000/4.5 = 1KJ/Kg

= 40,000 kJ/kg

Hence, the calorific value of the fuel is 40,000 kJ/kg.