A solution is made by mixing 35.0 mL of toluene C6H5CH3d=0867gmL with 125.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are
so the L of solution is...?
35ml + 125ml and then converting to L??
I must point out that you are missing a decimal in each of the density values. There should be a decimal between the 0 and the first digit to the right in each.
And yes, the total volume is 35 + 125 = ?? mL and convert to L, at least for that part of the problem.
To find the total volume of the solution, you need to add the volumes of toluene and benzene. In this case, the toluene volume is 35.0 mL and the benzene volume is 125.0 mL. Adding these two volumes gives:
Total volume = 35.0 mL + 125.0 mL = 160.0 mL
To convert this volume to liters, you need to divide by 1000 since there are 1000 mL in 1 liter:
Total volume = 160.0 mL ÷ 1000 = 0.160 L
Therefore, the total volume of the solution is 0.160 L.