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23 solutions

Molality

Q. Calculate the molality of a 17.5% (by mass) aqueous solution of nitric acid. A) 0.278 B) 0.212 C) 3.37 D) 2.78 E) The density of the solution is needed to solve the problem.

Solved • Jul 15, 2019

Molality

Q. A 1.30 M solution of CaCl2 in water has a density of 1.11 g/mL. What is the molality? A) 1.35m CaCl2 B) 1.44m CaCl2 C) 1.25m CaCl2 D) 1.17m CaCl2

Solved • Jul 15, 2019

Molality

Q. Sodium hydroxide is available commercially as a 50.0% by weight aqueous solution. Calculate the molality of this sodium hydroxide solution. A) 19.1m B) 25.0m C) 0.450m D) 125.m

Solved • Jul 15, 2019

Molality

Q. What molality of pentane is obtained by dissolving 5.0 g pentane, C5H12, in 245.0 g hexane, C6H14? A) 0.024m B) 0.020m C) 0.28m D) 20.m

Solved • Jul 15, 2019

Molality

Q. A solution is prepared by dissolving 17.75 g sulfuric acid, H2SO4, in enough water to make 100.0 mL of solution. If the density of the solution is 1.1094 g/mL, what is the molality? A) 0.1810m H2SO4 B) 1.940m H2SO4 C) 0.1775m H2SO4 D) 1.810m H2SO4

Solved • Jul 15, 2019

Molality

Q. An aqueous solution is 0.387 M in HCl. What is the molality of the solution if the density is 1.23 g/mL? A) 0.387m B) 0.115m C) 0.315m D) 0.411m E) 0.318m

Solved • Jul 15, 2019

Molality

Q. A solution is 0.0433m LiF. What is the molarity of the solution if the density is 1.10 g/mL? A) 0.0417 M B) 0.0441 M C) 0.0519 M D) 0.0476 M E) 0.0390 M

Solved • Jul 15, 2019