Chem. intermolecular forces?

Question

The heat of fusion of aaluminum is 3. 95kJ/G. What is the molar heat of fusion of aluminum? What quantity of energy is needed to melt 10.0g of aluminum? What quantity of energy is required to mel 10.0 mol of aluminum?

thanks

Answer 1

Al has a molar mass of 26.9815... grams

So the molar heat of fusion would be 3.95kJ/G * 26.9815... G/mol

To melt ten grams of aluminum requires 3.95kJ/G * 10G

To melt ten mols requires 3.95kJ/G * 26.9815G/mol * 10mol

The arithmetic is left as an exercise for the asker.

Answer 2

1.   3.95 kJ G^(-1) x 27 g mol(-1)

      =106.65 kJ mol^(-1)

2.  39.5 KJ

3. 1066.5 KJ

answer may wrong.....please don blame me...i hope it is correct....