# How many Joules are in 2.5 kcal?

Remember that $\text{1 kcal}$ $=$ $\text{1 Cal}$ $\ne$ $\text{1 cal}$, so this is the one where:
$\text{4.184 J}$ $=$ $\text{1 cal}$.
=> "2.5" cancel("k")cancel("cal") xx (1000 cancel("cal"))/("1" cancel("k")cancel("cal")) xx "4.184 J"/(1 cancel"cal")
$=$ $\textcolor{b l u e}{\text{10460 J}}$