Question

The molar heat of vaporization of water is 42 kJ/mol. How much energy is released by the condensation of 3.0 g of water?

Answer 1

Explanation:

So for water there will just be one mol.

I think this is how you do it, but it doesn't match the answer in the worksheet.

q=mc delta t

But we're not given a temperature?

q= (3.0g)(4.18 J/g x degrees celsius)

q= 12.54

And we know that + or - q= Hrxn

And that Hrxn=Hvap

???