I am guessing that you actually mean "kilojoules per mole" and "joules per gram", so the question probably ought to read "How do you convert kJ / mol to J / gram?" (I have put in the "divided by"...
1000 Milligrams = 1 Gram
so if i had specific figure in milli grams and wanted to convert to grams i would divide the amount of milli gram by 1000?
ie. 76milligrams = 0.076