Measures of Concentration: Molality and Other Calculations Answers

A solution is made by dissolving 23.0 g KOH in 1.60 L H2O. What is the molality of the solution? The density of water is 1.00 g/ml. Use the periodic table in the toolbar if needed. m

How many additional grams of KOH are required to increase the concentration of the solution to 0.500 m? g

What would the mass of the original solution be if the solution contains 0.500 mol NaOH (25.00% by mass)? g

What is the concentration, in grams per liter, of a solution prepared by dissolving 0.00040 mol HCl in 2.2 L H2O? Assume that the volume of the solution does not change when the HCl is added. g/L

A solution of NaOH has a concentration of 25.00% by mass. What mass of NaOH is present in 0.250 g of this solution? Use the periodic table in the toolbar if needed. g

Which of the following combinations of information would allow you to calculate concentration in grams per liter? Check all that apply.

What is the concentration in parts per million? Assume the density of the solution is the same as that for pure water (1.00 g/mL). ppm

What mass of NaOH must be added to the solution to increase the concentration to 30.00% by mass? g

Which of the following combinations of information would allow you to calculate concentration in ppmv? Check all that apply.