Molar heat of formation?

Question

This is a sample question, but I need to know how to figure it for later questions, can anyone help?

The synthesis of 16.10 grams of sterlingite, an organic compound with a molar mass of 109.42 grams/mole, absorbed 28.46 kJ of heat energy. What is the molar heat of formation for sterlingite (kJ/mol)?

Answer 1

It's a little strange, because heat of formation involves synthesis of the compound from the elements in their standard states. Maybe this is what they want:

Let sterlingite be called S.

28.46kJ/16.10gS x 109.42gS/1molS = 193.4 kJ/mole to four sig. figs.