Question

A snickers® candy bar contains 280 calories, of which the fat content accounts for 120 calories. what is the energy of the fat content, in kj? (1 cal = 4.184 j)

Answer 1

5.0 x 10² KJ

From the question given above,

A snickers® candy bar contains 280 calories. Fat content = 120 calories

1 calorie = 4.184 j

120 calories = 120 x 4,184 = 502.08j = 5.0 x 10² KJ

The energy of the fat content is 5.0 x 10² KJ.

Answer 2

The energy of fat content will be: 0.50.

Further Explanation:

Fatty acids are the compounds which consists of a carboxylic acid containing hydrocarbon chain. The cell membrane of the cells are made up of lipids. The lipid molecule contains fatty acid tail into their structure.

Fats are necessary content in our diet. They have high storage of energy when compared to others.

There can be two types of fats:

1. Saturated fats: They have only single bond present in their carbon-carbon skeleton  

2. Unsaturated fats: They have presence of double or triple bond in their carbon-carbon skeleton.

If a candy bar contains 280 calories out of which fat accounts for 120 calories then the energy of fat content will be 0.5 in kilojoules.

As, 1 cal=4.184

And 1 joules=1000 KJ

Therefore;

$\begin{gathered}120{\text{ cal}}=120\times\frac{{4.184}}{{1000}}\\=0.05\\\end{gathered}$

Hence the content of fat in kilo joules will be equal to 0.05

Learn more:

1. Learn more about fatty acid brainly.com/question/1386856

2. Learn more about lipids brainly.com/question/751529

3. Learn more about brainly.com/question/6947177

Answer Detail:

Grade: College biology

Subject: Biology

Chapter: Biomolecules

Keywords:

Fats, calories, kilojoules, joules, diet, energy, saturated fats, single bond, unsaturated fats, double or triple bond, Fatty acids, carboxylic acid , hydrocarbon chain, cell membrane, cells, lipids.