Homework Help: chemistry

Posted by b on Wednesday, May 12, 2010 at 6:12pm.

Ammonia, NH3, is used as a refrigerant. At its boiling point of -33慢, the enthalpy of vaporization of ammonia is 23.3 kJ/mol. How much heat is required to vaporize 125 g of ammonia at -33慢?

chemistry - c, Wednesday, May 12, 2010 at 6:39pm
171kj

q=molesx heat of vaporization
chemistry - DrBob222, Wednesday, May 12, 2010 at 7:29pm
The above formula is correct but you will need to change 125 g NH3 to moles to use it.

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