Question

How many calories are there in a 255 Food Calorie snack bar?

a.1 x 103
b.2.55 x 105
c.1.07 x 103
d.60.9
e.none of the above

Answer 1

2.55 × 10⁵ calories

Step-by-step explanation:

The Food Calorie is an energy unit commonly used to describe the energy content of foods. 1 Food Calorie is equal to 1 kilocalorie. The kilocalories corresponding to 255 Food Calories is:

255 Food Calorie × (1 kcal/1 Food Calorie) = 2.55 × 10² kcal

1 kilocalorie is equal to 1000 calories. The calories corresponding to 2.55 × 10² kilocalories is:

2.55 × 10² kcal × (1000 cal/ 1 kcal) = 2.55 × 10⁵ cal