Homework Help: Chemistry

Posted by Tom on Wednesday, May 13, 2009 at 10:34pm.

If 25.0mL of sodium nitrate solution (0.100mol/L) is added to 10.0mL of sodium carbonate solution (0.150 mol/L), what is the concentration of sodium ions in the resulting mixture? Assume the volumes are additive.

Chemistry - DrBob222, Wednesday, May 13, 2009 at 10:36pm
moles + moles = total moles.
volume + volume = total volume.
M = total moles/total volume.
Chemistry - Tom, Wednesday, May 13, 2009 at 10:38pm
Those aren't mole, those are concentraiton
Chemistry - Tom, Wednesday, May 13, 2009 at 10:44pm
Hello, i am still needing help
Chemistry - DrBob222, Wednesday, May 13, 2009 at 10:59pm
Hello yourself. I know those are not moles. I told you how to work the problem. Do you know how to get moles? Convert each to moles. Find moles Na in each. Add everything together to get final moles etc etc. Let me know if you still need help but tell me what you don't understand.

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