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If you want to lose 1 pound of "fat," which is 20% water, how many kilocalories do you need to expend?

i don't know where to start :(

Please Help!!!

  • Chemistry - ,

    One pound = 454 grams. Subtract 20% fat to give 454-20%of 454 = about 363 grams.
    I understand that fat calories = about 9 kcal/g therefore,
    363 grams x 9 kcal/g = ?? kcal. This is approximate and you need to go through the steps a little more accurately. Also, the 9 kcal/g is my memory; you should confirm that number and use a different number if appropriate.

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