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The change in enthalpy due to combustion...

The change in enthalpy due to combustion of glucose is `2880 " kJ mol"^(-1)`. 25% of this energy is utilised by the body muscles to do physical work. If 100 kJ of energy is used by the muscles to walk 1 km then what will be the maximum distance a person can walk after consuming 120 g of glucose ?

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Verified by Experts

120 g of glucose `= (120)/(180)xx2880 kJ = 1920 kJ`
25% of 1920 = 480 kJ and 100 kJ energy = 1 km distance.
` therefore 480` kJ of energy = 4.8 km
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