Question

In an experiment the combustion of7.5 kg of fuel produces 60,000kj of heat if the combustion is complete then the calorific value of fuel is

Answer 1

Answer:

The calorific value of fuel is $8.0\times10^6 J/kg$.

Explanation:

Calorific value of the fuel is a measure of energy given out by the combustion of the whose mass is given. It is expressed in Joules per kilogram.

Calorific value of fuel = k

Mass of the fuel = 7.5 kg

Energy released during combustion of 7.5 kg of fuel = 60,000 kJ=$6.0\times 10^7 J$

$k=\frac{\text{Energy released on combustion(J)}}{\text{Mass of the fuel (kg)}}$

$k=\frac{6\times 10^7 J}{7.5 kg}=8.0\times10^6 J/kg$

The calorific value of fuel is $8.0\times10^6 J/kg$.