Chem

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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.

• Chem -

You need to clarify the post. If you have 4.0 mL of 0.390M NiCl2 and you add no H2O to it then (NiCl2) = 0.390M. What are you looking for and what does the absorbance have to do with it? And which are you calling the "first" one?

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