1.

What is the enthalpy change of 20oC system if the heat capacity of air at 25oC is 5 J/oC and heat capacity of water vapor at 25oC is 10 J/oC, enthalpy of vaporization is 10 J, and the humidity is 20%?

A. 25 J
B. 37 J
C. 44 J
D. 51 J
Answer» C. 44 J


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