1) Convert kilocalories (kcal) into calories (cal).
[tex]\text{cal}=240\text{ kcal}\cdot\frac{1000\text{cal}}{1\text{kcal}}=\text{ 240000 cal}[/tex]
One can contains 240000 calories
2) Convert calories (cal) into Joules (J)
[tex]J=240000\text{cal}\cdot\frac{4.184J}{1\text{cal}}=1004160J[/tex]
1004160J are stored in the can.
3) Units to measure energy in food.
It is more common to use calories to measure energy in food.
