Grams of protein in a potato

Question

Determine the grams of protein in a small potato that has a total of 92.0 kcal, and contsils 18.0 grams of carbohydrates and no fat.

Answer 1

In nutrition, the kcal is equivalent to the calorie (cal) or vice versa.  So, saying 92 kcal, is really 92 calories.  Sometimes a Cap C is used (Cal).

Using certain accepted values:

Fat:  9 cal/g

Protein:  4 cal/g

Carb:  4 cal/g

 

18.0 g carbohydrates x 4 cal/g = 72 cal 

92.0 kcal = 92 cal (nutritional)

92 cal - 72 cal = 20 cal (nutritional) from protein

20 cal x 1 g protein/4 cal = 5 g of protein