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09-09-2018
Chemistry

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A patient arrives in the emergency with a burn caused by steam. Calculate the heat that released when 17.7 g of steam

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09-09-2018

The steam releases 39.9 kJ when it condenses..

The steam condenses and transfers its energy to the skin.

q = mΔH_cond = 17.7 g × (-2257 J/1 g) = -39 900 kJ = -39.9 kJ

The negative sign shows that the steam is releasing energy

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