Homework Help: chemistry

Posted by marla on Thursday, February 23, 2012 at 12:17pm.

i need to prepare 25.00 mL of a solution of a certain vitamin at a concentration of 2.00 mg/ml. how do i find the weight of the vitamin needed in the solution

chemistry - DrBob222, Thursday, February 23, 2012 at 12:27pm
2.00 mg/mL x 25 mL = ? mg needed.

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