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THERMODYNAMICS
Question #74079
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Question
Which of the following best defines the standard enthalpy of vaporization?
A. Heat released when one mole of gas condenses
B. Amount of heat required to vaporize one mole of a liquid at constant temperature and under standard pressure (1 bar)
C. Energy change when solid turns directly into vapor
D. Difference in enthalpy between solid and liquid states
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