Chemistry

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The total Calories for 2 tablespoons of crunchy peanut butter that contains 6 g of carbohydrate, 16 g of fat, and 7 g of protein. Express your answer using one significant figure.

How do I figure out the amount of kcal per carb fat and protein?
Thanks
-MC

  • Chemistry -

    Nevermind, I think the answer is 192, but how do I express this in one sig fig?

  • Chemistry -

    192 in one s.f. is:
    round to 200, then
    2 x 10^2 or 2E2. I obtained 196 and not 192 BUT I may be using different numbers for kcal vs grams.
    I used 4 kcal/g carb
    4 kcal/g protein
    9 kcal/g fat.

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