# Chemistry

posted by Hannah

The heat of vaporization of benzene, C6H6, is 30.8kJ/mol at its boiling point of 80.1 degrees celsius. How much energy in the form of heat is required to vaporize 102g of benzene at its boiling point?

I know that the answer is 24.2kJ but i am not sure how to get this.

1. bobpursley

how many moles of benzene is in 102 g? Figure that out.

Now, energy=30.8kJ/mol * number of moles

2. Hannah

I got 23.6. Is this correct?

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