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If a slice of bread contains 15 grams of carbohydrates, 3 grams of protein, and 3 gram of lipids, how many kilocalories (kcal) does it provide?

Sagot :

15 grams of carbohydrates, 3 grams of protein, and 3 gram of lipids will contain 81kcal.

Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram. The formula is Energy (in Kcal) = 4x (Proteins and carbohydrates mass in grams) + 9 x mass of fat in grams. To use the 4-9-4 rule, check your nutrition label and follow these and multiply the amount by 4. This will give you the number of calories in the food that comes from carbs.

Percentage of calories in your diet that day that came from protein. For example, if you ate a total of 2,000 calories and 700 of those calories came from protein, the resulting equation would be (700 x 100) divided by 2,000 = 35 percent of calories from protein.

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