For a specific work, on an average a person requires 5616 kJ of energy. How many kilograms of glucose must be consumed if all the required energy has to be derived from glucose only? δ H for combustio

Question

For a specific work, on an average a person requires 5616 kJ of energy. How many kilograms of glucose must be consumed if all the required energy has to be derived from glucose only? δ H for combustion of glucose is -2808 kJ mol^-1.

Prashant Kotian · Accepted Answer

Correct answer: B. Moles of glucose required: n = 5616 kJ / 2808 kJ/mol = 2.0 mol. Molar mass of glucose = 180 g/mol. Mass of glucose required: m = 2.0 mol * 180 g/mol = 360 g = 0.36 kg.

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