In chemistry MV1=MV2.?

Question

I think it stands for mole x volume of first=mole x volume of the second. If I'm correct on this meaning why is it true?

Answer 1

look at it like this M1V1 = M2V2 (where M= molarity and V = volume)

ex) I have 12M HCl (aq) how much of this solution do i need to make 500mL of a 1.5M solution

Welp ) (12M)(X) = (1.5M)(.5L) <-- have to conver mL to L
X = .063 L so there for you need 63mL of 12M HCl(aq) to make 500mL of a 1.5M solution

Answer 2

Its actually the molarity x volume. That then gives you the moles. This is a short cut for stochiometry that is useful for acid base reactions.