Consumption in Chemistry?

[sarah k]

Mononitrogen monoxide reacts with bromine gas at elevated temperatures according to the equation,
2 NO(g) + Br2(g) 2 NOBr(g)
In a certain reaction mixture the rate of formation of NOBr(g) was found to be 4.50 x 10–4 mol L–1 s–1. What is the rate of consumption of Br2(g), also in mol L–1 s–1?


4.50 x 10–4 mol L–1 s–1



2.25 x 10–4 mol L–1 s–1



2.12 x 10–4 mol L–1 s–1



2.03 x 10–3 mol L–1 s–1



9.00 x 10–4 mol L–1 s–1


Please help! Thanks!! :-)