What volume of water to make solution, Biology

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You need to prepare 500 ml of a solution containing 10 mM Tris, 0.15 M NaCl and 1 mg/ml SDS. At your work disposal are stock solutions containing 1 M Tris, 2.5M NaCl and 10% (w/v) SDS. How much of each stock must you add to what volume of water to make the solution?


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