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Chemistry
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A patient arrives in the emergency room with a burn caused by steam. Calculate the heat that is released when 17.4 g of steam at 100. ∘C hits the skin, condenses, and cools to body temperature of 37.0 ∘C. (For water, 540 cal (2260 J) is needed to convert 1 g of water to vapor at 100 ∘C.)

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Collen Von
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13 Dec 2019

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Related questions

A 140 g sample of steam at 100∘C is emitted from a volcano. It condenses, cools, and falls as snow at 0∘C(specific heat of water 4.184 J/g∘C). Liquid Formula Melting Point (∘C) Heat of Fu-sion (J/g) Boiling Point (∘C) Heat of Va-porization (J/g) Water H2O 0 334 100 2260

Part A How many kilojoules of heat were released? Express your answer with the appropriate units.

Calculate the change in heat when 17.0 g of water vapor (steam) at 100.0°C condenses to liquid water and then cools to 22.5 °C

Using the values for the heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following:

A. joules needed to melt 90.0 g of ice at 0 ∘C and to warm the liquid to 85.0

B. kilocalories released when 30.0 g of steam condenses at 100 ∘C and the liquid cools to 0 ∘C

C. kilojoules needed to melt 26.0 g of ice at 0 ∘C, warm the liquid to 100 ∘Cand change it to steam at 100 ∘C

∘C

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