Question

5000 gram of coal one complete combustion produced to 12500 kilojoule of heat energy the Caloric value of coalwill therefore be

Answer 1

calorific value will be 12500/5=2500kj/kg

Answer 2

Mass of coal that is combusted

$5000gm = 5kg$

Heat produced

$12500 \: kilojoule$

$caloric \: value \: = \frac{heat \: energy \: produced}{mass \: of \: coal \: combusted}$

$c = \frac{12500}{5}$

$c = 2500calorie$

So 2500calories of energy will be produced on the combustion of 5kg of coal.

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