Steam from a boiling teapot 100 degc hits a persons hand, Ask an Expert

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Steam from a boiling teapot (100 °C) hits a person's hand and causes a burn. Assuming 1 g of water vapor condenses to liquid (at 100 °C) and then cools to 40 °C when it hits the hand, what fraction of the total heat delivered to the person's skin comes from the condensation process? The heat of vaporization of water is +40.7 kJ/mol, the heat capacity of liquid water is 4.184 J °C-1g-1

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