The information below shows properties of aluminum (Al).

Question

DELTAHfus = 10.07 kJ/mol
DELTAHvap = 225 kJ/mol

Which quantity of heat is required to melt a 342.9-g sample of Al?

127.98 kJ
214.93 kJ
2,851.95 kJ
3,453.00 kJ

Answer 1

q = mass Al x heat fusion
Note that mass is in grams and heat fusion is in kJ/mol; therefore, you must convert g Al to mol or heat fusion from kJ/mol to kJ/g