Question

Name of the food product: Oreos

Mass of food types in one serving:

total Calories per serving: 160 Cal

carbohydrates: 25 g          Fat: 7 g            Protien: 1 g

Calculate the kcal per serving.....

carbohydrate: _____ kcal

fat: ______ kcal

Protien: _______ kcal

What are the total calories (kcal) per serving?

What percent (%) of the total Calories in your food product is from fat?

What percent (%) of the total Calories in your food product is from carbohydrate?

What percent (%) of the total Calories in your food product is from protien?

How does your calculated number of Calories compare to the Calories listed on the label of the food product?

Answer 1

note that 1 kcal = 1 Cal

typically

1 g of fat = 9 Cal

1 g of protein = 4 Cal

1 g of carb = 4 Cal

so:

carbohydrate serving energy = 25*4 = 100 kcal

fat serving energy = 7*9 = 63 kcal

protein serving energy = 1*4 = 4 kcal

total = 100 + 63+4 = 167 Cal

now, % calories:

% from fat = cal of fat / total calories 100% = 63/167 *100 = 37.724 %

% from carbs = cal of carbs/ total calories 100% = 100/167 *100 = 59.880 %

% from protein = cal of protein / total calories 100% = 4/167 *100 = 2.39520 %

the label is pretty near, since ratio is 160 vs. 167