Blue #1 is an FDA approved dye with the formula C37H34N2Na2O9S3. A stock solution is prepared by adding 75.0 mg of Blue #1 to enough water to prepare 250.0 ml of solution. A working solution is prepared by diluting 25.0 ml of the stock solution to a final volume of 500.0 ml. Calculate the concentration of the working solution in mol/L.

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Q: uppose 14.8 g of lead(I1) nitrate is dissolved in 350. ml of a 0.20 M aqueous solution of ammonium…

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Q: 2 You will need 25.0 mL of 0.5 M solutions of each reagent. To do this: Calculate the mass of sodium…

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Q: What is the molarity of the potassium ions [K+] in a solution prepared by dissolving 28.5 g of K2CO3…

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Q: 4. The density of 20.0% NaOH (by weight) is 1.22 g/mL. What is the molarity of 20% NaOH?

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Q: Calculate the concentration of this diluted solution

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