I really need help on this part please :(
5. A student prepared bromobenzene in the Organic lab by reacting 10.0 g of benzene, C6H6, with bromine in the presence of a ferric bromide catalyst according to the reaction of
C6H6 (l) + Br2 (l) ––––––> C6H5Br (l) + HBr (g) FeBr3
If the student obtained 12.9 g of bromobenzene, what was the percent yield?