Okay, so I got this homework yesterday and Im not quite clear on how to do this.

I have problems such as

If I dilute 250mL of 0.10M Lithium acetate solution to a volume of 750mL, what will the concentration of this solution be.

Can someone help me with this problem? This is how far I got

M1 = ?

V1 = 250mL

M2 = 0.10M

V2 = 750mL