Posted by **Jason** on Sunday, November 3, 2013 at 11:09pm.

I have done this so many way and can't seen to get the right answer please help!

I'm looking for the Concentration of NiCl2, M from the following

Volume of 0.390 M NiCl2, mL 4.0 3.0 2.0 1.0

Volume of water, mL, 0 1.0 2.0 3.0

Absorbance 0.858 0.644 0.429 0.215

I keep getting 3.432 for the first one and it's not right.

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