Physics, 16.01.2020 02:31 greend0719
Which one of the following statements is false?
a. the change in internal energy, δe, for a process is equal to the amount of heat absorbed at constant volume, qv .
b. the change in enthalpy, δh, for a process is equal to the amount of heat absorbed at constant pressure, qp .
c. a bomb calorimeter measures δh directly.
d. if qp for a process is negative, the process is exothermic.
e. the freezing of water is an example of an exothermic reaction.
Answers: 3
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Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.
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Which one of the following statements is false?
a. the change in internal energy, δe, for a...
a. the change in internal energy, δe, for a...
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