# How can I find the percent compositions of CuBr2?

##### 1 Answer
May 14, 2018

Just to retire this question....I make it approx. 28% metal content by mass....

#### Explanation:

The molar mass of cupric bromide is $223.37 \cdot g \cdot m o {l}^{-} 1$...

And thus %Cu=(63.55*g*mol^-1)/(223.37*g*mol^-1)xx100%=??%

And so what is %Br?