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total calories in a slice of bread

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Estimate the total calories in a slice of bread that has 9.0 g of carbohydrates, 2.0 g of protein, and 1.0 g of fat. What percentage of total calories is from fat?

If 4.0kcal/g for proteins and carbohydrates
If 9.0kcal/g for fats

1 kcal = 1 Cal = 1000 cal = 4.18 J

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Solution Summary

The solution calculates the total calories in a slice of bread.

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In a slice of bread:
The calories from the carbohydrates are:
4.0 kcal/g * 9.0g = 36 ...

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