Question

in an experiment 5 kg of fuel was completely burnt. the heat produced was measured to be 1,80,000 kj. calculate the calorific value of the fuel​

Answer 1

Answer:

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

Heat produced by 4.5 kg of fuel =180000 kJ.

Heat produced by 1 kg fuel =

4.5/

180000

=40000 kJ/kg.

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

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Answer 2

Answer:

The fuel has 36,000 kJ/kg of calorific value.

Explanation:

• The quantity of heat generated by the full combustion of 1 kilogram of fuel is known as the calorific value of the fuel.
• Calorific Value is mostly used to assess fuel efficiency.
• The fuel is more efficient and better when it has a higher calorific value.

From the question, we have that 5 kg of fuel produced 1,80,000 kJ of heat. The heat produced by 1 kg of fuel

$=\mathrm{\frac{1,80,000\ kJ}{5} }=\mathrm{36000\ kJ/kg}$

Hence, the calorific value of the fuel is 36000 kJ/kg.

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