Question

A snickers candy bar has 120 locals attributed to its fat content.

Answer 1

According to this, we only have to convert units.

Conversion: 4.184 J = 1 cal or we can say 4.184 kJ = 1 kcal (not kcals)

Procedure:

120 kcal x (4.184 kJ/1 kcal) = 502 kJ = 5.0x10^2 kJ

Answer: 5.02x10^2 kJ