Question

Perform the indicated conversion: 31.95 kJ = _______________ kcal

a) 0.1310 kcal
b) 7.636 kcal
c) 7.636 x 10^3 kcal
d) 1.337 x 10^2 kcal
e) 13.37 x 10^-2 kcal

Answer 1

To convert from kJ to kcal, multiply the given value by the conversion factor of 1 kcal / 4.184 kJ.

Step-by-step explanation:

To convert from kilojoules (kJ) to kilocalories (kcal), we can use the conversion factor of 1 calorie = 4.184 joules. Since 1 kilocalorie (kcal) is equal to 1000 calories, we can multiply the given value in kJ by the conversion factors:

31.95 kJ * (1 kcal / 4.184 kJ) = 7.636 kcal

So, the correct answer is

(c) 7.636 x 10^3 kcal.