Which of the following statements about enthalpy is true?
enthalpy of a substance can be measured directly.
a chemical process must occur and then changes between the state of the reactants and the state of the products can be determined.
enthalpy is the gradual decline into disorder.
enthalpy is a measure of the change in pressure of a system.
Answers: 2
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When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle. if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3.2 kilopascals, what is the partial pressure of the hydrogen?
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Which of the following statements about enthalpy is true?
enthalpy of a substance can be meas...
enthalpy of a substance can be meas...
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