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Mole Fraction

#### Q. Calculate the molality, the molarity, and the mole fraction of NH3 in an 12.80 mass % aqueous solution (d = 0.9651 g/mL).

Solved • Sep 14, 2019

Mole Fraction

#### Q. A solution contains 0.510 mol of isopropanol (C3H7OH) dissolved in 3.070 mol of water. (a) What is the mole fraction of isopropanol?

Solved • Sep 14, 2019

Mole Fraction

#### Q. A 7.00 L tank at 8.18 C is filled with 7.54 g of dinitrogen monoxide gas and 10.3 g of sulfur tetrafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction and partial pressure of each gas, and the total pressure in the tank. Round each of your answers to 3 significant digits.

Solved • Sep 17, 2019

Mole Fraction

#### Q. A 2.350x10^-2 M solution of a NaCl in water is at 20.0 degrees C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined the volume of water needed to do this was 999.4 mL. The density of water at 20.0 degrees C is 0.9982 g/mL. Calculate the mole fraction of salt in this solution. Express the mole fraction to four significant figures.

Solved • Sep 9, 2019

Mole Fraction

#### Q. an aqueous solution is 12.0 % by mass ammonia. NH3, and has a density of 0.950 g/mL. The mole fraction of ammonia in the solution is ___.

Solved • Aug 30, 2019

Mole Fraction

#### Q. What is the molality of an aqueous solution containing FeCl3 (MM = 162.2 g/mol) with a mole fraction of FeCl3 of 0.11? a) 6.9 b) 18 c) 6.1 d) 0.099 e) 0.12

Solved • Aug 28, 2019

Mole Fraction

#### Q. A 9.00 L tank at —1.1 °C is filled with 15.9 g of dinitrogen difluoride gas and 10.8 g of carbon monoxide gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction of each gas. Round each of your answers to 3 significant digits.

Solved • Jul 23, 2019