Question

A serving of fish contains 50 g of protein and 4 g of fat . if protein has a caloric value of 4.0kcal/g and fat has 9.1 kcal/g , how many kcal are in the. serving?report the answer to 2 significant figures

Answer 1

Answer:

2.4x10² kcal

Explanation:

As the serving of fish contains 50g of protein that is 4.0kcal/g:

50g × (4.0kcal/g) = 200kcal

And in 4g of fat that is 9.1kcal/g:

4g × (9.1kcal/g) = 36.4kcal

That means the kcal of the serving are:

200kcal + 36.4kcal = 236.4kcal

In 2 significant figures: 2.4x10² kcal

I hope it helps!