Question

An aqueous NaCl solution is made using 111 g of NaCl diluted to a total solution volume of 1.10 L . Part A Calculate the molarity of the solution. Express your answer using three significant figures. Part B Calculate the molality of the solution. (Assume a density of 1.08 g/mL for the solution.) Express your answer using two significant figures. Part C Calculate the mass percent of the solution. (Assume a density of 1.08 g/mL for the solution.) Express your answer using three significant figures.

Answer #1

Moles of NaCl = mass/molecular weight

= 111g / (58.44 g/mol)

= 1.899 mol

Volume of solution V = 1.10 L

Part a

Molarity = moles of NaCl / volume

= 1.899 mol / 1.10 L

= 1.73 M

Part b

Mass of solution = volume x density

= 1.10 L x 1.08 g/mL x 1000 mL/L

= 1188 g

Mass of solvent = 1188 - 111 = 1077 g x 1kg/1000g

= 1.077 kg

Molality = moles of NaCl / mass of solvent

= 1.899 mol / 1.077 kg

= 1.8 m

Part c

Mass % of NaCl = mass of NaCl x 100 / mass of solution

= 111 x 100 / 1188

= 9.34 %

Mass % of solvent = 100 - 9.34 = 90.66%

An aqueous NaCl solution is made using 113 g of NaCl diluted to
a total solution volume of 1.25 L .
A.) Calculate the molarity of the solution.
B.) Calculate the molality of the solution. (Assume a density of
1.08 g/mL for the solution.)
C.) Calculate the mass percent of the solution. (Assume a
density of 1.08 g/mL for the solution.)

An aqueous NaCl solution is made using 124 g of NaCl diluted to
a total solution volume of 1.05 L .
calculate molarity, caluclate molality. calculate mass
percent.

An aqueous KNO3 solution is made using 73.6 gof KNO3 diluted to
a total solution volume of 1.88L . Calculate the mass percent of
the solution. (Assume a density of 1.05 g/mL for the solution.)
M= 0.387 (molarity)
m= 0.383 (molality)

An aqueous solution contains 4.3% NaCl by mass.
Part A
Calculate the molality of the solution.
Express your answer using two significant figures.
Part B
Calculate mole fraction of the solution.
Express your answer using two significant figures.

An NaCl solution is made using 133g of NaCl ane
diluting it to a total volume of 1.00L .Calculate the molarity (M)
and mass percent of the solution (%(m/m)).Assume a solution density
of 1.08 g/mL.
M=?
(%(m/m))=?
I got a M=2.27 M and %(m/m)=12.31%

Part A
Calculate the mass percent (m/m) of a solution prepared by
dissolving 52.18 g of NaCl in 152.8 g of H2O.
Express your answer to four significant figures.
Part B
Vinegar is a solution of acetic acid in water. If a 185 mL bottle
of distilled vinegar contains 26.5 mL of acetic acid, what is the
volume percent (v/v) of the solution?
Express your answer to three significant figures.
Part C
Calculate the mass/volume percent (m/v) of 24.0 g...

A 2.050×10−2M solution of NaCl in water is
at 20.0∘C. The sample was created by dissolving a sample of NaCl in
water and then bringing the volume up to 1.000 L. It was determined
that the volume of water needed to do this was 999.4 mL . The
density of water at 20.0∘C is 0.9982 g/mL.
Part A
Calculate the molality of the salt solution.
Express your answer to four significant figures and include the
appropriate units.
Part B
Calculate...

A 2.100×10−2 M solution of NaCl in water is at 20.0∘C. The
sample was created by dissolving a sample of NaCl in water and then
bringing the volume up to 1.000 L. It was determined that the
volume of water needed to do this was 999.4 mL . The density of
water at 20.0∘C is 0.9982 g/mL.
Part A
Calculate the molality of the salt solution.
Express your answer to four significant figures and include the
appropriate units.
Part B...

A KNO3 solution is made using 92.4 g of KNO3 and diluting to a
total solution volume of 1.70 L .
Calculate the molarity of the solution.
Calculate the mass percent of the solution. (Assume a density of
1.06 g/mL for the solution.)

A)
A solution is prepared by dissolving 50.4 g sucrose (C12H22O11) in
0.332 kg of water. The final volume of the solution is 355 mL. For
this solution, calculate the molarity. Express the molarity
in units of moles per liter to three significant
figures.
B)
Calculate the molality. Express the molality in units of
moles per kilogram of solvent to three significant
figures.
C)
Calculate the percent by mass.Express the percent by
mass to three significant figures.
D)
Calculate the...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 8 minutes ago

asked 39 minutes ago

asked 44 minutes ago

asked 45 minutes ago

asked 52 minutes ago

asked 52 minutes ago

asked 56 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago