What wt of magnetite should be taken for analysis in order that after converting to a precipitate of Fe2O3.xH2O, the percentage of Fe3O4 in the sample can be found by multiplying the wt in grams of the ignited precipitate (Fe2O3) by 100

Q: Assuming that no equilibria other than dissolution are involved, calculate the concentrations of…

A: The salts given are Sr(OH)2·8H2O and Mg(OH)2.

Q: For the following reaction, determine the equilibrium concentrations of all species present if the…

A: In a reversible reaction, the reaction takes place in both forward and reverse reaction. However, it…

Q: To study a certain chemical reaction, the pH of a solution must be fixed and maintained throughout…

A: A solution that contains a weak acid and its conjugate base acts as a buffer solution. The pH of a…

Q: 4. Which cation or cations may be present in a pale blue solution that turns deep blue and forms a…

A: Cu2+ ions solution has pale blue color solution. The reaction between Cu2+ ions and Ammonia forms a…

Q: In Questions 1 through 6, you will be calculating the initial concentrations of Fe³+ ([Fe³+]o) and…

A: #QUESTION 1: Each Fe(NO3)3(aq) is completely dissociated into 1 Fe3+(aq).  Hence [Fe(NO3)3(aq)] =…

Q: The arsenic in a 1.010 g sample of a pesticide was converted to H3ASO4 by suitable treatment. The…

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Q: Sodium sulfate is slowly added to a solution containing 0.0500 M Ca²+ (aq) and 0.0210 M Ag+ (aq).…

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Q: A 5.186 gram sample of the anti-malarial pesticide DDT was dissolved in 100.0 mL of alchohol and…

A: The structure of DDT is as shown below: One molecule of DDT has 5 atoms of Cl.

Q: A chemist titrates 30.0 mL of a sample solution containing CI-(aq) ions with a 0.0489 mol/L…

A: The balanced reaction taking place is given as, Given : Concentration of KMnO4 = 0.0489 M Volume of…

Q: Describe two ways to increase the solubility of gaseous CO2 in water?

A: Factors: affecting the solubility of gaseous in liquid: Temperature Pressure(Henry's law) Nature of…

Q: 1. Calculate the concentration of ions in the following saturated solutions: (a) [1'] in Agl…

A: Hi, as you have posted multiple questions and have not mentioned which question you want us to solve…

Q: 1.0cm3 0.25mol dm3 potassium chromate(VI), K,Cro, is added as an indicator. 4 At the end-point, all…

A: A solution is said to be saturated solution, when the exact amount of solute has been dissolved in…

Q: Part IlI: Enthalpy of Precipitation Sodium Acetate Trihydrate, NaC2H3O2 3H20 Mass of NaC2H3O2 3H2O…

A: The ∆H for the precipitation of NaC2H3O2.3H2O from a saturated solution is to be calculated from the…

Q: Sodium sulfate is slowly added to a solution containing 0.0500 M Ca² (aq) and 0.0260 M Ag+ (aq).…

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Q: The solubility product of fluorite, CaF2, is 10-10.5 (A) What is the solubility of Ca²* at…

A: Given:  Ksp of CaF2 = 1010.5 = 3.2 × 10-11  Concentration of F- in part B = 0.009 M

Q: Orthophosphate (PO4) in river sediment sample is determined by weighing ammonium phosphomolybdate,…

A: Gravimetric factor (G.F.) is the weight of analyte per unit mass of precipitate. It is the ratio of…

Q: You want to determine Fe in a solution via manganometric titration. To determine the exact…

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Q: Copper(1) ions in aqueous solution react with NH₂ (aq) according to Cut (aq) + 2NH₂(aq) →…

A: The given reaction is: Cu+ aq + 2 NH3 aq → CuNH32+ aq; Kf  = 6.3 × 1010 Ksp of CuBr = 6.3 × 10-9

Q: A newly-discovered iron ore was examined to determine percent iron in the ore gravimetrically. 5.408…

A: The molar mass of iron (III) oxide (Fe2O3) =159.69g/mol The molar mass of Fe = 55.85g/mol and molar…

Q: Sodium sulfate is slowly added to a solution containing 0.0500 M Ca²+ (aq) and 0.0300 M Ag+ (aq).…

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Q: Write a balanced net ionic equation to show why the solubility of Co(OH)2(s) increases in the…

A: Answer: For a sparingly soluble compound it is considered that all the dissolved quantity of the…

Q: Consider the insoluble compound silver hydroxide , AgOH. The silver ion also forms a complex with…

A: The solubility product of salt is a constant at a given temperature irrespective of the source from…