How many kilojoules in a packet of chips?

well first of all who asks that question and second i dont think anyone but the smartes and nerdiest person in the world knows that questions LOL hahaha

Find the grams of fat in the packet . Convert the fat grams to calories by multiplying times nine. How many calories does it take to raise temperature of water 1 degree C[ if you are studying kilijoules, you already know this formula ] , then convert to kilijoules. This is HOW to do it. I won't give you the answer, only a pointer towards it.