1. The problem statement, all variables and given/known data I am trying to calculate the initial concentrations in a rate law lab If I have the following 0.020M Br2 solution, and am using 5.0mL of it 4.0M acetone, and am using 5.0ml of it 1.0M HCl and am using 5.0ml of it H2O 10.0ml how do I calculate the initial concentrations of solutions used in each run (this example is the first run only). After mixing all the reagents the total volume is 25.0mL, and the concentrations need to be calculate according to this volume? 2. Relevant equations n=m/M M=mol/L 3. The attempt at a solution this is what I am guessing... but not sure if it is correct... If I have 0.020M Br2 then that means I have 0.020mol of Br2 which means if I use 5 ml of it, my concentration will be (0.020mol/0.005L) = 4.0M is this correct? I am very confused!!!