First Law of Thermodynamics Video Lessons

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Problem: The First Law of Thermodynamics tells us that:  a. energy must be transferred during a chemical reaction. b. enthalpies of formation for elements must be zero. c. all collisions of gas molecules are elastic. d. if something loses energy, something else must gain that same amount of energy. e. heat always flows from a hot body to a cold body.

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Problem Details

The First Law of Thermodynamics tells us that: 

a. energy must be transferred during a chemical reaction.

b. enthalpies of formation for elements must be zero.

c. all collisions of gas molecules are elastic.

d. if something loses energy, something else must gain that same amount of energy.

e. heat always flows from a hot body to a cold body.

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