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3 January, 11:03

How much heat does your body lose when 3.45 g of sweat evaporates from your skin at 25 âc? (assume that the sweat is only water.) the heat of vaporization of water at 25 âc is 44.0 kj/mole?

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  1. 3 January, 11:20
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    Water has a Mol. mass of 18g/mol. (2 x 1:H) + (1 x O:16) = 18. Mass / mol. mass = moles. 3.45g / 18g/mol. = 0.192 moles of sweat. 0.192mol. x 44.0kJ/mol = 8.43kJ of heat released from the body.
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