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