Consider the following reaction:
2HBr (g) → H2 (g) + Br2 (g)
In the first 23.0 s of this reaction the of HBr dropped from 0.550 M to 0.457 M. Calculated the average rate (M•s-1) of the reaction in this time interval. Express your answer using two significant figures.
If the volume of the reaction in part (a) was 1.50 L. what amount of Br2 (in moles) was formed during the 15.0 s of the reaction? Express your answer using two significant figures.