Question

How many kilocalories of heat does an expenditure of 576 kJ produce?answer:____ kcal

Answer 1

We are asked to find out how many kilocalories of heat does an expenditure of 576 kJ produce?

Recall that 1 kJ of energy produces 0.239 kcal of heat.

Then 576 kJ of energy can produce x kcal of heat.

Let us set up a simple proportion,

`(x\;kcal)/(576\;kJ)=(0.239\;kcal)/(1\;kJ)`

Let us solve for x.

`\begin{gathered} (x)/(576)=(0.239)/(1) \\ x=0.239*576 \\ x=137.67\;kcal \end{gathered}`

Therefore, 137.67 kcal of heat will be produced for 576 kJ.