Question

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Answer 1

To find calorific value,

Heat produced by 40 gram fuel=8459J

Heat produced by 0.040kg fuel= 8459J

Heat produced by 1 kg fuel= $\frac{8459*1}{0.40}$

21147.5J

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Answer 2

Explanation:

answer is. 211475 KJ/kg

given here =weight of fuel burnt =40 g

in kg=0.04 kg.

heat produced=8458 KJ

calorific value = amount if heat produced ÷ fuel burnt

= 8459÷0.04

211475

value = 211745 KJ / kg