19000 J QUESTION 6 What is the latent heat of fusion of substance X, in kJ/mol, according to the graph below? 140+ Heating Curve for 1.00 mole of Substance X 120- - - 100- Temperature (C) 80 60- 40 10 20 30 40 50 60 70 80 90 100 Heat input (KJ) 10 KJ/mol 20 KJ/mol 30 kJ/mol 60 KJ/mol QUESTION 7 100 F3 F6 F6 F7 F8 S &