The specific heat of combustion of the fuel is 4.5 × 10 to the power of 7 J / kg. It means that …

Specific heat of combustion of fuel λ is the coefficient of proportionality between the amount of heat Q that is released and the mass of fuel m that burns: Q = λ * m.
Specific heat of combustion of fuel λ is the amount of heat Q that is released during the combustion of 1 kg of a given substance.
λ = 4.5 * 10 ^ 7 J / kg means that when 1 kg of matter is burned, Q = 4.5 * 10 ^ 7 J of thermal energy will be released.



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