2 Analytical Chemi...->Analytical Chemistry ProblemsQ1/ What is the weight, in milligrams, of 0.250 mmol Fe2O3 (ferricoxide), F.wt (159.7 mg/mmol)?Q2/ A solution is prepared by dissolving 1.26 g AGNO3 in a 250-mLvolumetric flask and diluting to volume. Calculate the molarity of thesilver nitrate solution. How many millimoles AGNO3 were dissolved?F.wt AGNO3 169.9 g/molQ3/ How many grams per milliliter of NaCl are contained in a 0.250 Msolution? F.wt NaCI 58.4 mg/mmolQ4/ Calculate the concentration of potassium ion in grams per literafter mixing 100mL of 0.250 M KCI and 200mL of 0.100 M K2SO4.(atomic weight K 39.1 mg/mmol)Q5/ How many milliliters of concentrated sulfuric acid, 94.0%, density1.831 g/cm3, are required to prepare 1 liter of a 0.100 M solution? F.wtH2SO4 98.1 g/molQ6/ You wish to prepare 500mL of a 0.100 M K2Cr2O7 solution from a0.250 M solution. What volume of the 0.250 M solution must be dilutedto 500 mL?Q7/ The concentration of zinc ion in blood serum is about 1mg/L.Express this as meq/L? equivalent weight of Zn2 32.7 mg/meqQ8/ Calculate the grams of substance required to prepare the followingsolutions:(a) 250mL of 5.00% (wt/vol) NaNO3; (b) 500mL of 1.00% (wt/vol) NH4NO3,(c) 1000mL of 10.0% (wt/vol) AGNO3.Q9/ What is the wt/vol % of the solute in each of the following solutions?(a) 52.3 g NazSO4/L, (b) 275 g KBr in 500 mL, (c) 3.65 g SO2 in 200 mL.

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Answered: Q1/ What is the weight, in milligrams,…

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Q1/ What is the weight, in milligrams, of 0.250 mmol Fe2O3 (ferric oxide),F.wt (159.7 mg/mmol)?

EBK A SMALL SCALE APPROACH TO ORGANIC L

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Chapter2: Crystallization

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Question

2 Analytical Chemi...
->
Analytical Chemistry Problems
Q1/ What is the weight, in milligrams, of 0.250 mmol Fe2O3 (ferric
oxide), F.wt (159.7 mg/mmol)?
Q2/ A solution is prepared by dissolving 1.26 g AGNO3 in a 250-mL
volumetric flask and diluting to volume. Calculate the molarity of the
silver nitrate solution. How many millimoles AGNO3 were dissolved?
F.wt AGNO3 169.9 g/mol
Q3/ How many grams per milliliter of NaCl are contained in a 0.250 M
solution? F.wt NaCI 58.4 mg/mmol
Q4/ Calculate the concentration of potassium ion in grams per liter
after mixing 100mL of 0.250 M KCI and 200mL of 0.100 M K2SO4.
(atomic weight K 39.1 mg/mmol)
Q5/ How many milliliters of concentrated sulfuric acid, 94.0%, density
1.831 g/cm3, are required to prepare 1 liter of a 0.100 M solution? F.wt
H2SO4 98.1 g/mol
Q6/ You wish to prepare 500mL of a 0.100 M K2Cr2O7 solution from a
0.250 M solution. What volume of the 0.250 M solution must be diluted
to 500 mL?
Q7/ The concentration of zinc ion in blood serum is about 1mg/L.
Express this as meq/L? equivalent weight of Zn2 32.7 mg/meq
Q8/ Calculate the grams of substance required to prepare the following
solutions:
(a) 250mL of 5.00% (wt/vol) NaNO3; (b) 500mL of 1.00% (wt/vol) NH4NO3,
(c) 1000mL of 10.0% (wt/vol) AGNO3.
Q9/ What is the wt/vol % of the solute in each of the following solutions?
(a) 52.3 g NazSO4/L, (b) 275 g KBr in 500 mL, (c) 3.65 g SO2 in 200 mL.

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