How much energy is required to vaporize 158 g of butane (C4H10) at its boiling point,if its ΔHvap is 24.3 kJ/mol?
A) 15.1 kJ
B) 66.1 kJ
C) 41.9 kJ
D) 2.60 kJ
E) 38.4 kJ
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