# How many joules are in 104 calories? (1 cal = 4.18J)?

Approx. $430 \cdot \text{J} \ldots \ldots \ldots . .$
We know that $1 \cdot \text{cal"=4.18*"J}$
And thus $104 \cdot \cancel{\text{cal"xx4.18*"J"*cancel("cal"^-1)=??"J}}$.