yayjo0rp8hiaalexandr yayjo0rp8hiaalexandr

26-08-2016
Biology

Answered

H2O has a mc021-1.jpgHvap = 40.7 kJ/mol. Solve for the quantity of heat released when 27.9 g of H2O condenses.

A60.00 kJ
B61.05 kJ
C63.09 kJ
D68.60 kJ

Verified Answer :

taskmasters taskmasters

30-08-2016

The heat released for a certain mass of water that is condensing is calculated by multiplying the heat of vaporization and the amount of the substance. Calculation is as follows:

Heat released = (40.7 kJ/mol) (27.9 g) ( 1 mol / 18 g) = 63.09 kJ

Therefore, the correct answer from the choices listed above is option C.

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