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April 19, 2015

Homework Help: Chem

Posted by Micheal on Friday, November 8, 2013 at 9:32pm.

I got part a but part b I'm having trouble with I keep getting 56.2mL.
I'm not sure what the next step is really to find part b.
A. How would you prepare 250 mL of a 0.150 M solution of CoCl2 from solid CoCl2 and distilled water?
Dissolve 4.87 grams solid CoCl2 into enough water to make 250mL of solution using a volumetric flask.

b. Using the solution prepared in part a and distilled water, how would you prepare 100 mL of a 0.0600 M solution of CoCl2?
Measure mL of the 0.150 M CoCl2 solution using a volumetric pipet into a volumetric flask and add enough water to bring the solution level up to the line.

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