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Mole Fraction

#### Q. A solution is prepared by dissolving 32.0 g of acetic acid (CH3COOH; d = 1.05 g cm^-3) in 0.350 kg of water (d = 1.00 g cm^3) resulting in a final volume of 380.5 mL. Find each concentration of the solution (each to two decimal places): (e) mole percent

Solved • Sep 20, 2019

Mole Fraction

#### Q. A solution is prepared by dissolving 32.0 g of acetic acid (CH3COOH; d = 1.05 g cm^-3) in 0.350 kg of water (d = 1.00 g cm^3) resulting in a final volume of 380.5 mL. Find each concentration of the solution (each to two decimal places): (d) mole fraction

Solved • Sep 20, 2019

Mole Fraction

#### Q. An aqueous solution contains 32% HCl by mass. Calculate mole fraction of the solution. Express your answer using two significant figures.

Solved • Sep 18, 2019

Mole Fraction

#### Q. Toluene (C6H5CH3) is a liquid compound similar to benzene (C6H6). Calculate the mole fraction of toluene in a solution that contains 103 g toluene and 316 benzene. 1. 0.216 2. 0.246 3. 0.784 4. 0.754 5. 0.326 6. 0.276

Solved • Sep 17, 2019

Mole Fraction

#### Q. A solution is made by mixing 74. g of water and 133. g of methanol (CH3OH). Calculate the mole fraction of water in this solution. Be sure your answer has the correct number of significant digits.

Solved • Sep 14, 2019

Mole Fraction

#### Q. Water treatment plants commonly use chlorination to destroy bacteria. A byproduct is chloroform (CHCl3), a suspected carcinogen produced when HOCl, formed by the reaction of Cl2 and water, reacts with dissolved organic matter. The United States, Canada, and the World Health Organization have set a limit of 100. ppb of CHCl3 in drinking water. Convert this concentration into molarity, molality, mole fraction, and mass percent. Enter your answer in scientific notation.

Solved • Sep 14, 2019

Mole Fraction

#### Q. An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (d = 1.114 g/mL; M = 62.07 g/mol) and water (d = 1.00 g/mL) at 20 degrees C. Thedensity of the mixture is 1.070 g/mL. Express the concentration of ethylene glycol a (e) mole fraction

Solved • Sep 14, 2019