how would you make 8mL of a 0.65 g/mL potassium chloride solution?
so, your final concentration must be 0.65 gram per 1 mL.
You need 8 mL.
Therefore, in order to get answer in grams, 0.65 g x 8 mL / 1 mL = 5.2 grams
You must measure 5.2 grams of NaCl and add water up to 8 mL, dissolve it, and get the final solution of the final concentration 0.65g/mL.
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