multiply by the number of moles
Multiply by avagardoes number
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"...
Multiply by 1000.
there are three feet per yard. 1 ft = 1/3 yd. So if you have X / ft, this is the same thing as X / (1/3 yd) = 3*X / yd, so multiply by 3.