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We know that carbohydrates and proteins typically supply 4kcal of energy per gram and fats supply 9kcal of energy per gram. Using this information, calculate the number of Food Calories in a Snickers Bar if it contains 11 g of fat, 5 g of protein, and 37 g of carbohydrates.

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Answer:

The number of food calories in a Snickers Bar is 267 kcal.

Explanation:

The number of Kcal provided by each kind of molecule is:

  • For proteins:

[tex]Energy = \frac{4Kcal}{g} .mass[/tex]

  • For fat:

[tex]Energy = \frac{9Kcal}{g} .mass[/tex]

  • For carbohydrates:

[tex]Energy = \frac{4Kcal}{g} .mass[/tex]

Replacing with the info given in the task:

  • For proteins:

[tex]Energy = \frac{4Kcal}{g} .5g=20kcal[/tex]

  • For fat:

[tex]Energy = \frac{9Kcal}{g} .11g=99kcal[/tex]

  • For carbohydrates:

[tex]Energy = \frac{4Kcal}{g} .37g=148kcal[/tex]

Total amount of energy = 20 kcal + 99 kcal + 148 kcal = 267 kcal