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Robinlynn228
10.07.2019 •
Mathematics
Aslice of bread has 1.5 g of fat, 19 g carbohydrate and 4 g protein. how many kcal in the slice? show all of you work in a dimensional analysis format.
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Ответ:
The answer is 105.5 kcal/slice of bread.
Step-by-step explanation:
The kcal per gram of:
protein = 4kcal/g.carbohydrate = 4kcal/g.fat = 9kcal/g.Now, you have:
1.5 g of fat + 19g of carbohydrate + 4g of protein = 1 slice of bread.If we multiply the amount of components by his kcal:
1.5g * 9kcal/g + 19g * 4kcal/g + 4g * 4kcal/g;Now gram/gram = 1, and we can cancel the grams in the equation:
1.5* 9kcal + 19 * 4kcal + 4 * 4kcal = 105.5kcal;Finally, the result of the kcal of the slice bread is:
105.5 kcal/slice of bread.Ответ:
All you have to do is notice that 5 is a common factor of both 25 and 45. Divide both numbers by 5 and you get 5/9.