What is the mass of solute, in grams, in 300. ml. of a1.299 x 10 M solution ofNaPO,?Mass of solute-What are the molar concentrations of theNa andPO, ions?Molar concentration Na-Molar concentration PO,M

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Living By Chemistry: First Edition Textbook

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Author:Angelica Stacy

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ChapterU4: Toxins: Stoichiometry, Solution Chemistry, And Acids And Bases

Section: Chapter Questions

Problem SIII4RE

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A 25-mL sample of 0.50 M NaOH is combined with a 75-mL sample of 0.50 M NaOH. What is the concentration of the resulting NaOH solution?
A 10.00-mL sample of a 24.00% solution of ammonium bromide (NH4Br) requires 23.41 mL of 1.200 molar silver nitrate (AgNO3) to react with all of the bromide ion present. (a) Calculate the molarity of the ammonium bromide solution. (b) Use the molarity of the solution to find the mass of ammonium bromide in 1.000 L of this solution. (c) From the percentage concentration and the answer to part b, find the mass of 1.000 L ammonium bromide solution. (d) Combine the answer to part c with the volume of 1.000 L to express the density of the ammonium bromide solution (in g/mL).
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When a solution is diluted by adding additional solvent, the concentration of solute changes hut the amount of solute present does not change. Explain. Suppose 250. mL of water is added to 125 mL of 0.55 1 M NaCl solution. Explain how you would calculate the concentration of the solution after dilution.
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What is the mass of solute, in grams, in 300. ml. of a 1.299 x 10 M solution of NaPO,? Mass of solute- What are the molar concentrations of the Na and PO, ions? Molar concentration Na- Molar concentration PO, M