Question

An aqueous solution is 28.0 % by mass ethanol, CH3CH2OH, and has a density of 0.957 g/mL.

The mole fraction of ethanol in the solution is____ .

Answer #1

Vodka is 25% by mass ethanol (C2H5OH) and
has a density of 0.75 g/mL. Calculate the mole fraction of each
species (water and ethanol) in solution, and the molality of the
ethanol in vodka.

An aqueous solution is 8.00% ammonium chloride, NH4Cl, by mass.
The density of the solution is 1.023 g/mL. What are the molality,
mole fraction, and molarity of NH4Cl in the solution?

You have an aqueous solution of ethanol (molar mass of ethanol =
46.01 g/mol) that has a molarity of 8.1198 M and a weight percent
by ethanol of 40%. What is the density of the solution?

Calculate the mole fraction of solute in the following aqueous
solutions (a) 0.112 M C6H12O6
(glucose solution, p = 1.006 g/mL; (b) 3.20% ethanol
(CH3CH2OH) by volume (p = 0.993 g/mL; pure
ethanol, p = 0.789 g/mL)

1) The mole fraction of sodium phosphate, Na3PO4, in an aqueous
solution is 5.62×10-2 . The percent by mass of sodium phosphate in
the solution is %.
2)An aqueous solution is 36.0 % by mass
hydrochloric acid, HCl, and has a
density of 1.18 g/mL.
The mole fraction of hydrochloric acid in the
solution is
.

A solution is 40% ethanol (density = 0.789 g/mL) by volume and
60% water (density = 1.00 g/mL). If Tom Titan has 750.0 mL of the
solution, what is the mass of ethanol in solution?

what is the concentration in molarity of an aqueous solution
of potassium nitrate that has a mole fraction of KNO3 equal to
0.195? the density of the solution is 1.36 g/mL

assume you dissolve 45.0g camphor (C10H16O) in 425mL of ethanol
(C2H5OH, has a density of 0.785g/mL) calculate the molality,
molarity, mole fraction, and mass % of camphor in this
solution.

the density of
a 6.27 M aqueous acetic acid solution is 1.045 g/ml. determine the
molarity of this solution and mole fraction of acetic
acid

Consider a 1.866M aqueous solution of tartaric acid, C4H6O6. The
density of the solution is 1.1200g/mL. a. Calculate the percentage
tartaric acid by mass in the solution. b. Calculate the molality of
the solution. c. Calculate the mole fraction of tartaric acid in
the solution.

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