A hospital saline solution is analyzed to verify its concentration. A 50.0-mL sample of the solution with a mass of 43.69 g is evaporated to dryness. If the solid sodium chloride residue has a mass of 5.89 g, what was the mass percent of sodium chloride in the original solution? % NaCl

A student needs to prepare 50.0 mL of a 1.20 M aqueous H2O2 solution. Calculate the volume of 4.6 M H2O2 stock solution that should be used to prepare the solution.

A solution is made by diluting 37 ml of a 10.25 mil/L standard solution to a volume of 2.40L. What is the concentration of the resulting solution?

A 6.00 M stock solution of potassium permanganate is diluted successively by first diluting 5.00 mL the stock solution to 100. mL. Then, 2.00 mL of this dilute solution is added to 98.00 mL of water. Determine the final concentration of the potassium permanganate solution.

If 53.0 g of KClO3 was transferred into 125.0 g of water at 30.0 celcius. how many grams of KClO3 will percipitate? g solute at 30.0 celcius is 10 grams

A 0.820 m aqueous solution of KBr has a total mass of 82.0 g. What masses of solute and solvent are present?

A 20.0-mL solution of 1.10 M KCl is diluted. How much water must be added to dilute the concentration to 0.750 M KCl?

A sample of potassium bicarbonate (KHCO3) was reacted with HCl to produce KCl. The following data was collected. Mass of beaker 28.43 g Mass of beaker + KHCO3 36.95 g Volume of HCl 12.0 mL Concentration of HCl 9.0 M Mass of beaker +residue (KCl) 33.82 g Calculate the following quantities. Show calculations where requested: Mass of KHCO3 __________________ Mass of residue __________________ Mass of 1 mol of KHCO3 __________________ No. of moles of KHCO3 used ___________________ Show calculations below No. of moles of HCl added ____________________ Show calculations below: Assuming KHCO3 is the limiting reactant, how many grams of KCl can be formed? Show calculations below: Assuming HCl is the limiting reactant, how many grams of KCl can be formed? Show calculations below: Which reactant is limiting? ___________________ Which reactant is excess? ____________________ Actual yield of KCl: ______________________ Theoretical yield of KCl: ______________________ Percent yield of KCl:…

You add 25.0 mL dionized water to 60.0 mL of 0.450 M potassium cyanate. Calculate the molarity of the resulting solution.

11.) What is the molar concentration of 268 mg of sodium acetate when added to 135 mL of water?