Question

Part A Calculate the molarity of a solution prepared by dissolving 12.9 g of Na2CrO4 in enough water to produce a solution with a volume of 670. mL .

Express the molarity to three significant digits

Part B

How many moles of KBr are present in 160. mL of a 0.127 M solution?

Express the amount in moles to three significant digits

Part C

How many milliliters of 6.7 M HCl solution are needed to obtain 0.19 mol of HCl?

Express the volume in milliliters to two significant digits.

Answer #1

Tb

How many milliliters of 5.5 M HCl solution are needed
to obtain 0.14 mol of HCl?
Express the volume in milliliters to two significant digits
How many moles of KBr are present in 140. mL of a 0.128
M solution?
Express the amount in moles to three significant digits.

(a) Calculate the molarity of a solution made by dissolving
0.0715 mol Na2SO4 in enough water to form 550 mL of solution. Give
the answer again with the correct amount of significant figures.
(b) How many moles of KMnO4 are present in 50.0 mL of a 0.0850 M
solution? Give the answer again with the correct amount of
significant figures. (c) How many milliliters of 11.6 M HCl
solution are needed to obtain 0.205 mol of HCl? Give the answer...

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) Calculate the molarity of a solution made by dissolving
0.0715 mol Na2SO4 in enough water to form 650
mL of solution.
Answer-
Answer with correct sig figs-
(b) How many moles of KMnO4 are present in 25.0 mL of a
0.0950 M solution?
Answer-
Answer with correct sig figs-
(c) How many milliliters of 12.6 M HCl solution are
needed to obtain 0.205 mol of HCl?
Answer-
Answer with correct sig figs-

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...

A solution was prepared by dissolving 0.1927 g of HgO (see the
Primary Standards table) in 20 mL of water containing 4 g of KBr.
Titration with HCl required 17.96 mL to reach a phenolphthalein end
point. Calculate the molarity of the HCl.

A solution was prepared by
dissolving 26.0 g of KCl in 225 g of water.
The composition of a solution can be expressed in several
different ways. Four of the most common concentration units are
defined as follows:. mass %=mass of
componenttotal mass of solution×100%; mole fraction (X)=moles of
componenttotal moles of solution; molarity (M)=moles of
soluteliters of solution; molality (m)=moles of
solutemass of solvent (kg)
Part A
Calculate the mass percent of KCl in the solution.
Part B
Calculate...

a.) What is the molarity of a solution prepared by dissolving
47.1 grams of Ca(OH)2 in a total solution volume of 400.0 mL?
b.) What volume of the solution in part (a) is required to
prepare 5.00 L of 0.100 M Ca(OH)2?
c.) The dilute solution in part (b) is used in a titration
experiment to neutralize 35.00 mL of an HClO solution. 24.48mL of
0.100 M Ca(OH)2 are required to fully neutralize the hypochlorous
acid. Give the balanced chemical...

A strontium hydroxide solution is prepared by dissolving 10.40 g
of Sr(OH)2 in water to make 47.00 mL of solution.What is the
molarity of this solution?
Express your answer to four significant figures and include the
appropriate units.
SubmitMy AnswersGive
Up
Part B
Next the strontium hydroxide solution prepared in part (a) is
used to titrate a nitric acid solution of unknown
concentration.Write a balanced chemical equation to represent the
reaction between strontium hydroxide and nitric acid solutions.
Express your...

A solution is prepared by dissolving 20.2 mL of methanol in
100.0 mL of water. The final volume of this solution is 118ml. The
densities of methanol and water are 0.782 g/mL and 1.00 g/mL,
respectively. For this solution, calculate the following-
molarity
molality
mass %
MOLE FRACTION
VOLUME OF SOLVENT
MASS OF SOLVENT
MOLES OF SOLVENT
VOLUME OF SOLUTE
MOLES OF SOLUTE
MASS OF SOLUTE
VOLUME OF SOLUTION
MASS OF SOLUTION

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