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    If there are 27g of carbohydrares in a fruit/energy bar, and it has 140 calories total, how many of those calories are carbohydrates?

    0  Views: 1261 Answers: 1 Posted: 10 years ago
    Tags: nutrition

    1 Answer

    A single gram of carbohydrates contains roughly four calories of energy. ... it has 4 calories1 gram of carbohydrate has 4 calories 1 gram of protein has 4 calories.  1 gram of fat has about 9 calories (these numbers are from things I am reading from a Google search).
    You can readily see, by doing simple math, that 27g of carbohydrate is 27 x 4 or 108 calories from carbs.  That doesn't leave a lot of calories for fat or protein, does it.  I don't really understand HOW to determine the number of calories in a gram of carb, fat, protein based on the information I find when I look for the same answers as you 



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