A solution is made by mixing 35.0 mL of toluene C6H5CH3 d=0867gmL with 125.0 mL of benzene C6H6 D=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are?

Question

Find M and m

Answer 1

molarity = # mols/L of solution.
molality = # mols/kg solvent.

g toluene = density x volume
g benzene = density x volume

mols benzene = g/molar mass
Post your work if you get stuck.

Answer 2

thanks i got it