A solution consists of 30.4 g of hydrochloric acid, HCl, and 99.6 g water and has a density of 1.12 g/mL.Calculate the weight percent of HCl, the molality of HCl, the mole fraction of HCl, and the molarity of HCl in the solution.Answer: weight percent = ________% molality = ______ m mole fraction = _______ molarity = ____ M

A 6.2 M aqueous solution of a non-electrolyte (MW=120.0 g/mole) has a density of 1.24 g/ml. Answer the following. Mole fraction water        __________________ Molality                         __________________ % by mass water           __________________

Question 10 10 pts A chemist adds 13.2 g of a pure compound to 0.75 L of water and observes the boiling point of the water increases from 100.0 °C to 100.3 °C. Which of the four salts is most likely to be the compound? From Basics of General, Biological, and Organic Chemistry. (Ball et al.) the boiling point elevation of a solution is given by: AT = 0.5MT where MT is the concentration of all particles and ions dissolved in the water in moles per liter. Nal O NaCl O NaBr O NaF 652 W

Phenol, C6H5OH is soluble in ethanol, CH3CH2OH. A solution is prepared by dissolving phenol in ethanol. The prepared solution has a molality of 0.1274 m. What is the mole fraction of phenol? __________ What is the mass percentage of phenol? ___________ % What is the molarity of the solution? __________ M The density of the solution is 0.8874 g/mL