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Posted: **Wed May 18, 2022 3:06 pm**

: 3 Calculate How Much Of A Solution Of A Known Concentration Needed In Order To Add A Needed Mass Practice Problem A 1 (15.54 KiB) Viewed 56 times

3. Calculate how much of a solution of a known concentration needed in order to add a needed mass. Practice problem: a. For a solution with a concentration of 45ng/ul, how many ul do you need to add to get 90ng?