Question

A banana split contains 1.12 million calories. What is the energy value in kilojoules?

a. 1.12 kJ
b. 4.686 x 10^3 kJ
c. 4686 kJ
d. 2.68 x 10^5 kJ
e. 268 kJ

Answer 1

Option c. 4686 kJ

Actually b and c, are the same.

Step-by-step explanation:

This question requires a conversion of units:

1.12 millon calories = 1.12×10⁶ cal

1 cal = 4.187 J → 1 cal = 4.18×10⁻³ kJ

To make the conversion = 1.12×10⁶ cal . 4.18×10⁻³ kJ / 1 cal = 4689.4 kJ

≅ 4686 kJ