Calculate the total concentration, in molarity, of hydroxide ions when 1,949.5 milligrams of magnesium hydroxide are completely dissolved into 0.112 L of 7.71 x10-¹ M NaOH. Assume the added solute does not contribute significantly to the total volume. Report your answer to three significant digits. 4

A student needs to dilute a 0.47 M Pb(NO3)2  solution to make 77.0 mL of 0.22 M Pb(NO3)2. Set up the calculation by placing the values with the correct units into the equation. Then, calculate the volume, in milliliters, of the 0.47 M Pb(NO3)2 solution that is needed.

How many milliliters of a 0.7077 M HCl solution are required to neutralize 7.89 g of Mg(OH)2? Molar Mass:     HCl = 36.46 g/mol            Mg(OH)2  = 58.33 g/mol 2    HCl        +       Mg(OH)2          →         2   H2O       +          MgCl2

Consider the reaction: Li2S(aq) + Co(NO3)2(aq) →  2 LiNO3(aq) + CoS(s) What volume (in mL) of a 0.10 mol L-1 Li2S solution is required to completely react with 138 mL of 0.29 mol L-1 Co(NO3)2?

How many milliliters of a 0.7077 M HCl solution are required to neutralize 7.89 g of Mg(OH)2? Molar Mass:     HCl = 36.46 g/mol            Mg(OH)2  = 58.33 g/mol 2    HCl        +       Mg(OH)2          →         2   H2O       +          MgCl2

In the laboratory, a student dilutes 22.3 of 6.05 M perchloric acid solution to a total volume of 300.0 mL. What is the concentration of the diluted solution?

A 0.249 M sodium hydroxide solution required 25.00 mL to titrate 10.0 mL of an unknown concentration of sulfuric acid.  Calculate the molarity of the sulfuric acid solution.

You are given 25.00 mL of a hydrochloric acid solution of unknown concentration.  You find it requires 34.41 mL of a 0.1950 M NaOH solution to exactly neutralize this sample (phenolphthalein was used as an indicator). What is the molarity (M) of the HCl solution?  What is the percentage of HCl in the solution?  Assume the density of the solution is 1.00 g/mL

What is the mass of zinc hydroxide dissolved in 1500.0 mL of 0.210 M zinc hydroxide solution?

Suppose that 2.89 L of 6.75 M potassium carbonate is added to 1.38 L of 1.57 M magnesium nitrate.  What is the total concentration of ions in solution after the reaction goes to completion? (Do not include units in your answer. If you round during your calculation make sure to keep at least 3 decimal places. Report your answer to 1 decimal place.)