NVAEasyJEE Main 2023 · 25 January, Shift 1Internal Energy & Enthalpy

Chemistry Question from JEE Main 2023 · 25 January, Shift 1

An athlete is given 100g100 \, \text{g} of glucose (C6H12O6\mathrm{C_6H_{12}O_6}) for energy, which is equivalent to 1800kJ1800 \, \text{kJ} of energy. If 50%50\% of this energy is utilized for activities, the weight of extra water needed to perspire is _____ g\text{g}. (Nearest integer)

Given: Enthalpy of evaporation of water = 45kJ/mol45 \, \text{kJ/mol}; molar masses: C=12  g/mol\mathrm{C} = 12 \; \text{g/mol}, H=1  g/mol\mathrm{H} = 1 \; \text{g/mol}, O=16  g/mol\mathrm{O} = 16 \; \text{g/mol}.

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