[charisse]

Hello all. 1201 victim here, in need of a little assistance. The all-mighty homework question reads:

Calculate the concentration of KCl in a solution made by mixing 25.0 mL of 0.100 M KCl with 50.0 mL of 0.100 M KCl.

My conjecture: we are to calculate the moles from the information given:
.0025 and .005 moles KCl. On a wild hair, I then added them together, for a total of .0075 moles. Even friskier, I totaled the given volumes and converted to liters: .075 L. And then.. (what else was there left to do, after all).. I calculated the molarity using these totals: .0075 moles/.075 L = .1 M

Could this madness by correct? Or might one of you kind forum-friendlies point me in a saner direction?

Much obliged,
Charisse  

[sundberg]

It's not madness, but perfectly sane and correct.

[charisse]

Why thank you fellow mole!