Answer:
C) 170 Cal
Explanation:
We are given the composition of a food sample as;
Carbohydrate = 25 g
fat = 8 g
Protein = 5 g
We are needed to determine the energy content of the food;
We need to know the amount energy yielded by each food substance.
That is; carbohydrates and proteins generate 4 calories per gram while fats generates 9 calories per gram.
Therefore;
Amount of energy will be;
= (25 × 4 cal/g) + (8g × 9 cal/g) + (5 g × 4 cal/g)
= 172 cal
Approximately , 170 calories
Therefore, the energy content will be 170 calories
<em>Kinetic molecular Theory points:</em>
1. Gases molecules are always in random motion.
2. Gases molecule collide with each other and with the walls of container.
3. Gases molecules total volume is negligible as compare to container.
4. There is no attractive forces between the gases particles
5. K.E is directly proportional to absolute temperature.
<em>Why liquid are denser than gases according to K.M.T:</em>
1. As gases are in random motion, so they have weak forces/ no attractive forces (Acc. to KMT) due to this they are apart as compare to liquid which have stronger forces are closer to each other. So volume of gases will be greater. d= m/v
2. K. E of gases are greater than liquid due to this gases move randomly, apart from each another. Due to this their volume will be greater. d= m/v
3. Gases molecules total volume is negligible as compare to container which show that gases molecules have large spaces between them which causes lower in density.
Answer: Bond Polarity | Chemistry for Non-Majors - Lumen Learning
Explanation:
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Like all cells without a nucleus it will not carry DNA thus the inability to reproduce its life span will be short
