The combustion of 10.0 g coke raised the temperature of 1.0 kg water from to

CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics

Problem

The combustion of 10.0 g coke raised the temperature of 1.0 kg water from 10∘C10^\circ\text{C} to 50∘C50^\circ\text{C}. If specific heat of H2O\text{H}_2\text{O} is 1 cal/g then the fuel value of coke is : (1) 1000 cal (2) 2000 cal (3) 3000 cal (4) 4000 cal

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