If 17.5 g of NaCl is dissolved in 100. g of water, what is the
mass % concentration of NaCl in this solution?
Note:
1. Use 3 sig figs for your final answer.
2. Do not answer as fractions. For example, if you think 30% is
the correct answer, either "30" or "30%" will be accepted, but
"0.30" will not. "30%" will actually be converted to 30
automatically
When 2.13 g of a nonelectrolyte solute is dissolved in water to
make 395 mL of solution at 21 °C, the solution exerts an osmotic
pressure of 959 torr. What is the molar concentration of the
solution? How many moles of solute are in the solution? What is the
molar mass of the solution?
A) If 0.640 mol of a nonvolatile nonelectrolyte are dissolved in
3.60 mol of water, what is the vapor pressure PH2O of the
resulting solution? The vapor pressure of pure water is 23.8 torr
at 25 ∘C .
B) A solution is composed of 1.60 mol cyclohexane
(P∘cy=97.6 torr) and 2.00 mol acetone (P∘ac=229.5
torr). What is the total vapor pressure Ptotal above this
solution?
If 0.580mol of a nonvolatile nonelectrolyte are
dissolved in 3.50mol of water, what is the vapor pressure
PH2O of the resulting solution? The vapor pressure of pure
water is23.8 torr at 25 ?C .
In solutions composed of two liquids (A and B), each liquid
contributes to the total vapor pressure above the solution. The
total vapor pressure is the sum of the partial pressures of the
components:
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A 2.500×10^-2M solution of NaCl in water is
at 20.0?C. The sample...
Part A
If 0.100 mol of a nonvolatile nonelectrolyte are
dissolved in 3.00 mol of water, what is the vapor pressure
PH2O of the resulting solution? The vapor pressure of pure
water is 23.8 torr at 25 ∘C .
Part B
A solution is composed of 1.00 mol cyclohexane
(P∘cy=97.6 torr) and 2.10 mol acetone (P∘ac=229.5
torr). What is the total vapor pressure Ptotal above this
solution?
Part C
What is the freezing point of radiator fluid that is 50%
antifreeze...
A sample of glucose (C6H12O6) of mass 8.44 g is dissolved in
2.11 kg water. What is the
freezing point of this solution? The freezing point depression
constant, Kf, for water is
1.86°C/mol.
An unknown mass of sodium hydroxide is dissolved in 500 g of
water. This solution is neutralized by adding successively 18 g of
CH3COOH, 25.2 g HNO3, and 29.4 g of H2SO4. Determine
a) the mass of NaOH
b) the mass of H2O in the neutral solution.
PART A If 0.480 mol of a nonvolatile nonelectrolyte are
dissolved in 3.60 mol of water, what is the vapor pressure PH2O of
the resulting solution? The vapor pressure of pure water is 23.8
torr at 25 ∘C . Express your answer with the appropriate units.
PART B A solution is composed of 1.90 mol cyclohexane
(P∘cy=97.6 torr) and 2.30 mol acetone (P∘ac=229.5
torr). What is the total vapor pressure Ptotal above this
solution?
A 29.0-g sample of NaOH is dissolved in water, and the solution
is diluted to give a final volume of 1.60 L. The molarity of the
final solution isA) 18.1 M B) 0.453 M C) 0.725 M D) 0.0552 M E)
0.862 M