Chemistry Homework Help

Browse Homework Solutions

57 solutions

Mole Fraction

Q. Determine the molality of a solution of benzene dissolved in toluene (methylbenzene) for which the mole fraction of benzeneis 0.486. Give your answer to 2 decimal places

Solved • Jan 24, 2020

Mole Fraction

Q. Calculate the mole fraction of HCl in a 10.0% (by mass) aqueous solution. A. 0.00111 B. 0.0344 C. 0.0520 D. .0548 E. 0.122

Solved • Jan 24, 2020

Mole Fraction

Q. A mixture of helium and nitrogen gases contains helium at a partial pressure of 403 mm Hg and nitrogen at a partial pressure of 494 mm Hg. What is the mole fraction of each gas in the mixture?

Solved • Jan 23, 2020

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 0.21?

Solved • Jan 22, 2020

Mole Fraction

Q. A 24.1-g mixture of nitrogen and carbon dioxide is found to occupy a volume of 15.1 L when measured at 870.2 mmHg and 31.2oC. What is the mole fraction of nitrogen in this mixture?

Solved • Nov 9, 2019

Mole Fraction

Q. If 2.00 g of helium gas and 5.29 g of oxygen are mixed together, what is the mole fraction of helium in the solution?

Solved • Oct 25, 2019

Mole Fraction

Q. Calculate the mole fraction of NaCl in a solution prepared by dissolving 117 g NaCl in 1.11 kg H2O.

Solved • Oct 25, 2019