SOLUTION: a chemist has a bottle containing 0.25 M CuCl2. How many milliliters of this solution should the chemist use to add 12.0 g of cucl2 to her reactions. I don't know how to work o

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Question 809155: a chemist has a bottle containing 0.25 M CuCl2. How many milliliters of this solution should the chemist use to add 12.0 g of cucl2 to her reactions.
I don't know how to work out the problem.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Find the formula weight for CuCl%5B2%5D.
63.546%2B2%2A%2835.45%29=134.446 grams per mole.

The rest is just units conversions:
0.25M+=+0.25%2A%28134.446%29%2A%281%2F1000%29 %28moles%2Fliter%29%28gram%2Fmole%29%28liter%2Fmililiters%29
That is the concentration in grams CuCl%5B2%5D per mililiter of solution.

Key idea is (concentration)*(volume)=(quantity), assuming numerator of "concentration" is is the same unit as "quantity".

c%2Av=12
v=12%2Fc
You want highlight%28v=12.0%2F%280.25%2A%28134.446%29%2A%281%2F1000%29%29%29 mililiters