how many calories (kcal) are in a snack with 175 kj of energy? ? cal

Explanation:

Step1: Recall energy - conversion factor

1 kcal = 4.184 kJ.

Step2: Set up conversion equation

Let $x$ be the number of kcal. We have the proportion $\frac{x}{175\ kJ}=\frac{1\ kcal}{4.184\ kJ}$.

Step3: Solve for $x$

$x=\frac{175\ kJ\times1\ kcal}{4.184\ kJ}\approx41.83$.

Answer:

41.83 kcal