[JimJo]

I have the answer to this problem, but i do not understand it... The answer is .719 M AgNO3.

Given that 50mL of 0.100 M magnesium bromide reacts with 13.9mL of silver nitrate solution according to the equation:

MgBr2(aq) + 2AgNO3(aq) -> 2AgBr(s) + Mg(NO3)2(aq)

What is the molarity of the AgNO3 solution?

Help would be appreciated.

[DUDE778]

Its pretty much simple calculations.  Start with your original Molarity of MgBr2 and times it by the volume.  use your ratio to to convert your moles of MgBr2 to AgNO3.  Then divide your answer by 13.9mL.
YOu will get 0.719M.    Hope that helps.

Dude778