In a 59.0-g aqueous solution of methanol, CH4O, the mole
fraction of methanol is 0.120. What...
In a 59.0-g aqueous solution of methanol, CH4O, the mole
fraction of methanol is 0.120. What is the mass of each component?
Mass of (g) CH4O? Mass (g) of H2O?
The mole fraction of glucose in an aqueous solution is 0.015.
The density of the solution is 1.05 g/mL. Calculate the molarity
and molality of the solution.
The molality of an aqueous sodium nitrate solution is 2.81 m.
What is the mole fraction of NaNO3? The molar mass of NaNO3 is
85.00 g/mol; the molar mass of water is 18.02 g/mol. 0.0506 0.239
0.00281 0.193 0.0482
What are the mole fraction (X) and molality (m) of ethanol
(C2H5OH) in an aqueous solution that is 45.0%
ethanol by volume? The density of water is 1.00
g/mL and that of ethanol is 0.789 g/mL.
mole fraction = ?????;
molality =
??? m
The mole fraction of potassium phosphate, K3PO4, in an aqueous solution is 8.11x10-2 The percent by mass of potassium phosphate in the solution is _______ %. The mole fraction of ammonium sulfide, (NH4)2S, in an aqueous solution is 3.42x10-2 The percent by mass of ammonium sulfide in the solution is _______ %.
The mole fraction of an aqueous solution of magnesium sulfite is
0.29. Calculate the molarity (in mol/L) of the magnesium sulfite
solution, if the density of the solution is 1.38 g
mL-1.
Determine the mole fraction of
magnesium bromide in a 5.51 M aqueous solution of magnesium
bromide. The density of the solution is 1.17 g
mL-1.
You are asked to prepare an aqueous solution of ethylene glycol
(HOCH2CH2OH) with a mole fraction of 0.192.
a) If you use 645 g of water, what mass (in g) of ethylene
glycol should you use?
b) What is the molality of the resulting solution?
An aqueous solution of C6H12O6 has a mole fraction of 0.0445 for
C6H12O6 in water. Calculate the Molarity of the solution. The
density of the solution is 1.09 g/mL