Q. 3.94 - An Introduction to General, Organic, and Biological Chemistry

Question

A young patient drinks whole milk as part of her diet. Calculate the total kilocalories if the glass of milk contains $12g$ of carbohydrate, $9g$ of fat, and $9g$ of protein. (Round off answers for each food type to the tens place.) $\left(3.5\right)$

Step-by-Step Solution

Answer

Use units of energy (also known as pound cents or giant diets) to find out the carbohydrates, cozy, or physiological catalytic values of foods (similar to $1000$ calories). Therefore, the "nutrients" of a dish are just megajoules and there is no "kilo" qualifier. In the  abstract symbol, the capitalization rate.

Step 1: Given information

The heat flow (calories) utilised to enable the heat of a concentration to be determined is fixed to a certain value in centigrade (° C) (1 kcal or 1000 cal). Electrostatic is a SI vital part (J) for energy production. 4.18 kJ is a substantial calorie intake.

Step 2: Explanation

The whole milk contains of  $12g$ of carbohydrate, $9g$ of fat, and of $9g$ protein. Calculate the kilocalories for each type of food using the formula and round off to tens place.

Calculate the energy available from carbohydrates in kilocalories as follows:

kilocalories  = mass $\times$energy value

$=(12g$of carbohydrate$)$$\left(4\frac{kcal}{\mathrm{g}}\right)$

 $=48kcal$ carbohydrates

Calculate the energy available from fats in kilocalories as follows:

kilocalories  = mass $\times$energy value

$=(9g$of fats$)$$\left(9\frac{kcal}{\mathrm{g}}\right)$

 $=81kcal$ fats

Calculate the energy available from proteins in kilocalories as follows:

kilocalories  =  mass $\times$ energy value

$=(9g$ of protein$)$$\left(4\frac{kcal}{\mathrm{g}}\right)$

$=36kcal$ protein

Therefore, total energy in kilocalories is as follows:

$48kcal$ carbohydrates $+81kcal$ fats$+36kcal$  protein

$165kcal$