14. Solutions

Concentrated perchloric acid is an aqueous solution that is 70% HClO4 by mass. If the density of this solution is 1.670 g/mL, what is its molality?

How many moles of KF are contained in 347 g of water in a 0.175 m KF solution?

If 0.98 g of an unknown was dissolved in 10.30 g of solvent and the resulting solution has a molality of 0.45 m, what is the molar mass of the unknown?

The molarity of an aqueous solution is 1.58 M with a density of 0.976 g/mL. The molar mass of the solute is 195 g/mol. What is the molality (m) of the solution?

What is the molality of a 10.5% by mass glucose (C₆H₁₂O₆) solution, given that the density of the solution is 1.03 g/mL?