momentofroggie momentofroggie

24-02-2021
Biology

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In order to measure the absorption spectrum of CoCl2, you need to dilute the stock solution to 0.32 M. What volume of the stock solution (0.8 M concentration) and water should be mixed to make a 10 mL solution of 0.32 M?

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ChoiSungHyun ChoiSungHyun

24-02-2021

Explanation:

Volume of stock solution needed

= 10mL * (0.32M/0.8M)

= 10mL * (4/10) = 4mL.

Volume of water needed

= 10mL - Volume of stock solution

= 10mL - 4mL = 6mL.

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