CHEMISTRY
posted by Alex on .
1. You have 88.8 mL of 2.50 M solution of Na2CrO4 (aq). You have 125 mL of a 2.50 M solution of AgNO3 (aq). Calculate the concetration of Na+ when the two solutions are added together.
2. You have 75.0 mL of 2.50 M solution of Na2CrO4 (aq). You have 125 mL of a 1.84 M solution of AgNO3 (aq). Calculate the concetration of CrO4^2 when the two solutions are added together.

1. You have 2.50M x 0.0.0888 L = ?? moles Na2CrO4. (Na^+) is twice that.
2. Write the equation. Balance it. Ag2CrO4 will ppt. Determine moles Na2CrO4 and moles AgNO3, determine which material is in excess and how much ppt is formed, from that find CrO4^
Post your work if you get stuck. 
1.1.769 M of sodium ions

umm DrBob222 i still don't understand wat u did.... lik is it possible for a stepbystep help?