A 0.5g sample of CaCO3  is dissolved in an acidic solution. The calcium is precipitated as Ca2C2O4H2O and the dry precipitate is found to weigh 0,72. What is the percentage of CaO in the the sample

Q: The following salts were added to a beaker of distilled water: NaCI ENH4)2CO3 Ca(NO3)2 Which of the…

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Q: KMnO4 by heating. Calculate the Ca concentration in the sample since 4.94 mL

A: Molarity of KMnO4  =0.001 M Volume of KMnO4 = 4.94 mL At equivalent point,  Geq. of KMnO4 = Geq. of…

Q: Step 1 :4.9668 g of Na₂SO3 was dissolved in 30ml distilled water by heating. Step 2: Then 6.0895g of…

A: The objective of this question is to calculate the thereotical yield. The theoretical yield of a…

Q: How many grams of Ag2CO3 will precipitate when excess K2CO3 solution is added to 41.0mL of 0.638M…

A: The theoretical amount of product formed from a given amount of reactants can be identified using…

Q: The arsenic in a 2.345g sample of a pesticide was converted to H 3 AsO4 by suitable treatment. The…

A: Molarity is defined as the number of moles of solute per litre of the solution. It is denoted as M.…

Q: (a) If the molar solubility of Nd₂(CO3)3 at 25 °C is 1.00e-07 mol/L, what is the Ksp at this…

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Q: Solid ammonium carbonate is slowly added to 125 mL of a 0.0682 M iron(II) acetate solution. The…

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Q: Hardness in groundwater is due to the presence of metal ions, primarily Mg2+and Ca2+. Hardness is…

A: Hardness in groundwater is because of the presence of metal particles, essentially Mg2+and Ca2+.…

Q: HgCl2 2H9S + H2S + 2H20 + 3H9S + 2H3O* + 2CI- Cu2* + H2S + 2H2O Cus + 2H3O* 2B13+ + 3H2S + 6H20 +…

A: A precipitation reaction occur when cations and anions of two solutions in aqueous medium combine to…

Q: As part of a soil analysis on a plot of land, a scientist wants to determine the ammonium content…

A: Given data, Mass of soil sample = 5.045g Volume of solution = 0.500L Mass of precipitate using 125mL…

Q: The concentration of CO in air is determined by passing a known volume of air through a tube that…

A: Given, Volume of air sample = 4.79 L Volume of Na2S2O3 = 7.17 mL Concentration of Na2S2O3 = 0.00329…

Q: . A compound is known to be NazCO3, NazSO4, NaOH, NaCl, NaC2H302 or NANO3. When a barium nitrate…

A: Given: The possibility of the compound is Na2CO3, Na2SO4, NaOH, NaCl, NaC2H3O2 and NaNO3. When…

Q: One way to remove heavy metal ions from water is by treatment with sodium carbonate. Calculate the…

A: Given data,Molarity of Mn2+=3.25×10-2MVolume of Mn2+ solution=0.654LMolarity of Na2CO3=0.742MVolume…

Q: (5) Silver phosphate, Ag,PO4, is an ionic compound with a K, of 2.6 ×x 10". Calculate the solubility…

A: An ionic bond can be defined as the electrostatic force of attraction between cation and anions.…

Q: The maximum amount of BaSO4 precipitated on mixing 40 mL of 3 M BaCl2 with 100 mL of 1 M H2SO4 is…

A: When two ionic compounds react together, constituent ions of both compound exchange with each other…

Q: What mass (g) of precipitate is formed when 35.5 mL of 0.184 M Pb(NO3)2 is treated with an excess of…

A: We have to find the mass of the precipitate

Q: 1. A bottle containing an alkaline earth chloride was removed due to uncareful handling. The sample…

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Q: cations being precipitated in the reactions below,then write

A: We have to Identify the cations being precipitated in the given reactions ,then tell the color of…

Q: 0.00247

A: Molarity of KMnO4 = 0.0010 M Volume of KMnO4 = 4.94 mL At equivalent point,  Geq. of KMnO4 = Geq. of…

Q: 12. A 0.5000-g sample that contains KCl and KI gives a precipitate of Aga and AgI that weighs 0.2818…

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Q: What is the molar solubility (in mols/L)of silver chloride in 2.00 M NH3(aq) given that Ksp of AgCI…

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Q: A 100.0 mL water sample was mixed with 25.00 mL of 0.002517 M K₂Cr₂O7 (294.2 g/mol) to oxidize Fe²*…

A: Given data:Volume of sample = 100 mLVolume of K2Cr2O7 = 25 mLMolarity of K2Cr2O7 = 0.002517 MVolume…

Q: Q5: A sample of 0.676g of an unknown compound containing barium ions (Ba+) is dissolved in water and…

A: The objective of the question is to calculate the percent by mass of the Ba in the original unknown…

Q: For the determination of Ca in blood serum, 5 mL of a serum sample is taken and the Ca2 + in it is…

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Q: solubliky in aqueous solution changes with pH. If the solubility does change, pick the pH at which…

A: The question is based on the concepts of solubility. we need to identify the effect of PH change on…

Q: A 55.00 mL solution of 0.3900 M AGNO, was added to a solution of AsO. Ag, AsO, precipitated and was…

A: Given. the AgNO3 solution is 55 ml or 0.055 L of 0.39M or 0.39 mol/L moles of Ag in the given…

Q: A solution contains 0.04500.0450 M Ca2+ and 0.09500.0950 M Ag+. If solid Na3PO4 is added to this…

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Q: A solution of HCl is prepared for titration of unknown Na2CO3 samples, by standardization with pure…

A: Mass of Na2CO3 = 0.4453 g Molar mass of Na2CO3 = 105.99 g/mole Mole of Na2CO3 =…

Q: A stainless steel alloy is to be analyzed for its chromium content. A 3.50 g sample of the steel is…

A: Mass of steel alloy = 3.50 gVolume of Cr2O72- solution = 250 mLMass of BaCrO4 = 0.145 g Percent by…

Q: In an experiment on evaluation of antacid containing magnesium carbonate, a tablet weighing 2.50 g…

A: Given, mass of tablet = 2.50 g            molarity of HCl = 1.00 M            volume of HCl = 5.00…

Q: Sodium phosphate is added to a solution that contains 0.0014 M aluminum nitrate and 0.028 M calcium…

A: Solubility product: It is defined as the product of its dissolved ion concentrations raised to the…

Q: A 10.00 mL sample containing 8.00 g/L of a mixture of KCI and NaCl was titrated with 0.10 M standard…

A: Given: Volume of sample = 10.00 mL = 0.010 L                                (Since 1 L = 1000 mL)…

Q: What is precipitation-titration? Then, briefly and consisely describe the methodology employed in…

A: The titration in which precipitate is formed at the end of titration is considered precipitation…

Q: Standardization of NaOH Method 1 Fill a burette with the solution of NaOH(aq) of unknown…

A: A numerical problem based on quantitative analysis, which is to be accomplished.

Q: Suppose we wish to recover silver from an aqueous solution containing a soluble compound silver as…

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Q: When 300.0ml of 0.700M Na2S and 200.0ml of 0.900M Fe(NO3)3 solutions are mixed together the reaction…

A: Volume of Na2S = 300 mL = 0.3 L Molarity of Na2S = 0.7 M  Volume of Fe(NO3)3 = 200 mL = 0.2 L…

Q: (a) If the molar solubility of Tl2S at 25 oC is 5.31e-08 mol/L, what is the Ksp at this temperature?…

A: we have to calculate the solubility product constant and the molar solubility

Q: 30.0 mL of 0.400 M Zn²+ is mixed with 100.0 mL of 0.200 M F (Ksp ZnF₂ = 0.030). In the mixture you…

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Q: Analysis of a mixture consisting of NaOH + NażCO3 + inert matter gives the following data: Sample…

A: Mass of original sample = 10.00 g Volume of actual solution made with original sample = 250.0 mL…

Q: Sn3(PO4)2 solution is to be subjected to argentometric titration, a) Write the balanced titration…

A: Balanced Chemical Equation: Sn3(PO4)2 (aq) + 6AgNO3 (aq) ———> 2Ag3PO4 (s) + 3Sn(NO3)2 (aq)…

Q: Suppose, in an experiment to determine the amount of sodium hypochlorite in bleach, you titrated a…

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