BH4- + 8Ag+  + 8OH-    →   H2BO3-   + 8Ag(s)   + 5H2O   The purity of a quantity of KBH4 to be used in an organic synthesis was established by diluting 3.258g of the material to exactly 500.0mL, treating a 100.0 mL aliquot with 50.00 mL of  0.2639M AgNO3 and

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A: metallic zinc (m(Zn) = 0.505 g) is dissolved in dilute sulfuric acid, the resulting solution is…

Q: The digestion of a 0.1387-g sample of a phosphorus containing compound in a mixture of HNO, and…

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Q: Given the following information: hydrofluoric acid triethylamine HF (C₂H5)3N Ka = 7.2E-4 Kb = 5.2E-4…

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A: metallic magnesium (m(Mg) = 0.5012 g) is dissolved in dilute sulfuric acid, the resulting solution…

Q: A quantitative analysis for ethanol, C2H60, is accomplished by a redox back titration. Ethanol is…

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Q: An impure sample of oxalic acid (H2C2O4) was oxidized by potassium permanganate. A 0.261-g sample of…

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Q: Oral rehydration salts are stated to contain the following components: Sodium Chloride  3.5g…

A: % of stated content of Na in the sample = 95.714%Explanation:Hence, the sample contains 95.714% of…

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A: metallic aluminum (m(Al) = 0.5540 g) is dissolved in dilute sulfuric acid, the resulting solution is…

Q: answer the chemistry problem in the image and show solution step by step

A: The objective of the question is to complete the tables.

Q: 8. According to the regulatory documentation, the following indicators can be most used to determine…

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A: Given:  Mass of sample = 188.5 mg  Molarity of HCl solution = 0.1065 M  Volume of HCl solution…

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Q: Five white, 500-mg uncoated ascorbic acid (AA) tablets with an average weight of 0.6100-g were…

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Q: Mass of KxFe(C2O4)y · zH2O : 5.60 g Mass of sample : 0.155 g Mass of FeCl3 used in preparation :…

A: Dissociation of the given complex is shown.

Q: To determine the concentration of an EDTA solution, the following aluminum(III) solution is…

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Q: What is the identity of the precipitate that forms when 70 mL of 0.1 M BaCl2 reacts with 65 mL of…

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Q: An impure sample of Na3PO3 weighing 0.1 g is dissolved in 35 mL of water. A solution containing 45…

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Q: Mass of KxFe(C2O4)y · zH2O : 4.70 g Mass of sample : 0.175 g Mass of FeCl3 used in preparation :…

A: Mass of KxFe(C2O4)y · zH2O : 4.70 g Mass of sample : 0.175 g Mass of FeCl3 used in preparation :…

Q: (a) Standard oxalate was made by dissolving 3.514 g of Na2C2O4 in 1.000 L of 1 M H2SO4. A 25.00-mL…

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Q: In the analysis of H2O2 using KMnO4, the simulation first states that about 20 mL of water is added…

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Q: 1.) The solubility product, Ksp, of Cd3(PO4)2 is 2.5 x 10-33. What is the solubility (in g/L) of…

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Q: A student prepared 2-butanone (C4H8O) in the lab. To determine the purity of the product, the ketone…

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Q: Assume you dissolve 0.235 g of the weak acid benzoic acid, CeHCO₂H, in enough water to make 3.00 x…

A: Benzoic acid, C6H5CO2H is a weak acid with pKa = 4.20  Mass of benzoic acid, C6H5CO2H (MW = 122.12…

Q: Use the equation below to calculate the following: 2 NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2 H2O(l)…

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Q: True or false?

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Q: A 0.08 M sodium hydrOxide solution was prepared and titrated against 25 mL of 0.11 M formic acid,…

A: It is an neutralization titration . 17 ml of 0.08 M NaOH has been added to 25 ml 0.11 M formic acid.

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A: Concentration of CO2 = 24.0 mMConcentration of bicarbonate = 23.0 mmpKaCO3 = 6.10

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Q: 5. The dichromate ion, Cr2O72- reacts with methanol, CH3OH in acidic solution according to the…

A: Final volume = 200 x 3 = 600 mL [Cr2O72-] = 200 x 1 / 600 = 0.33 M [CH3OH] = 200 x 1.875 / 600 =…

Q: The titration of 86.9 mL of an unknown concentration H3PO4 solution requires 94.6 mL of 0.086 M KOH…

A: Volume of H3PO4 = 86.9 ml ...Or  because 1L = 1000 ml    ...so, = 86.9 ml × (1L / 1000 ml )  =…

Q: The hydrogen sulfide in a 40.0-g sample of crude petroleum was removed by distillation and collected…

A: Mass of CdSO4 = 0.079 g Mass of sample = 40.0 g

Q: A 50.0 mL solution of Ca(OH)₂ with an unknown concentration was titrated with 0.340 M HNO₃. To reach…

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Q: 25 nm, which çan be used for the spectrophotometric determination of ammonia. OCF 2 OH + NH3…

A: Solution -

Q: A quantitative analysis for ethanol, C2H60, is accomplished by a redox back titration. Ethanol is…

A: The explanation is given below-