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16 solutions

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

Mole Fraction

Q. A solution is made by mixing 12. g of acetic acid (HCH3CO2) and 120. g of water. Calculate the mole fraction of acetic acid in this solution. Round your answer to 2 significant digits.

Solved • Jul 21, 2019

Mole Fraction

Q. A 2.00 M solution of CaCl2 in water has a density of 1.17 g/mL. What is the mole fraction of CaCl2? A) 0.0366 B) 0.0380 C) 0.0348 D) 0.0360

Solved • Jul 15, 2019

Mole Fraction

Q. Calculate the mole fraction of phosphoric acid (H3PO4) in a 25.4% (by mass) aqueous solution. A) 1.00 B) 4.14 C) 0.259 D) 0.0589 E) 0.0626

Solved • Jul 15, 2019

Mole Fraction

Q. A solution of LiCl in water is 18.0 wt% LiCl. What is the mole fraction of LiCl? A) 4.56 B) 0.0853 C) 0.0933 D) 0.425

Solved • Jul 15, 2019

Mole Fraction

Q. A solution of LiCl in water has XLiCl = 0.0500. What is the molality? A) 2.77m LiCl B) 5.26m LiCl C) 2.92m LiCl D) 2.60m LiCl

Solved • Jul 15, 2019

Mole Fraction

Q. Calculate the mole fraction of total ions in an aqueous solution prepared by dissolving 0.400 moles of MgCl2 in 850.0 g of water. A) 0.0248 B) 0.0254 C) 0.00841 D) 0.00848 E) 0.0167

Solved • Jul 15, 2019