When concentrated CaCl2 (aq) is added to NazHPO, (aq), a white precipitate forms that is 38.7% Ca by mass.

Q: 1.736 g of iron ore is dissolved with acid and precipitated as Fe2O3X.H2O. After the precipitate is…

A: The percentage of the Iron in the sample of iron ore can be calculated as:

Q: The phosphorus in a 0.2222-g sample was precipitated as the slightly soluble (NH4)3PO4 • 12Mo O3.…

A: P2O5 = 2 (NH4)3PO4 • 12Mo O3 = 24 PbMoO4   Moles of PbMoO4 are, Moles = mass ÷ molar mass Moles =…

Q: 1. A sample containing magnetite, Fe;O4, was analyzed by dissolving a 1.5419-g sample in…

A: Amount of Ore obtained Fe=0.8525g Reaction involved  Fe3O4 + 8HCl ----------   Fe+2+2Fe+3 4Fe3O4  +…

Q: 19- by heating 2.86 g of hydrated sample of washing soda Na,CO3.XH20, till Complete drying the…

A: This reaction is all about the  conversion of hydrous salt into anhydrous salt by applying heat to…

Q: The balanced equation for the reaction of aqueous Pb(C1O,), with aqueous Nal is Pb(ClO,),(aq) + 2…

A: Given that : Volume of Pb(ClO3)2 = 1.50 L Volume of NaI = 0.900 L Concentration of NaI = 0.130 M…

Q: In the laboratory you are given the task of separating Ag" and Co" ions in aqueous solution. For…

A: If either of the given ions forms a precipitate on reaction with the reagent to the mixture then the…

Q: A 1.6394-g sample of limestone taken from Sinuhutan Cave in Brgy. Onop, Miagao was analyzed for Fe,…

A: ib

Q: In the laboratory you are given the task of separating Pb²* and Fe2* ions in aqueous solution.

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Q: 2. 0.4852 g sample of iron ore is dissolved in acid, oxidized to +3 state and precipitated as…

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Q: In the laboratory you are given the task of separating Ca and Fe" ions in aqueous solution. For each…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: A 0.5683 g sample of a pure soluble bromide compound is dissolved in water, and all of the bromide…

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Q: Write the balanced equation for the reaction of aqueous Pb(CIO,), with aqueous Nal. Include phases.…

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Q: A herbicide contains 2,4-D (2,4-dichlorophenoxyacetic acid), C8 H6 Cl2 O3. A 1.265-g sample of the…

A: A question based on mole concept that is to be accomplished.

Q: A 0.2417g sample of a compound composed of C,H,O,Cl only, is burned in oxygen yielding 0.4964g of…

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Q: An iron ore was analyzed by dissolving a 1.957-g sample in concentrated HCl. The resulting solution…

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Q: Aluminum in an ore sample is determined by dissolving it and then precipitating with base as Al(OH)3…

A: Given, 0.2385 g of precipitate

Q: In the laboratory you are given the task of separating Ca2+ and Ag* ions in aqueous solution. For…

A: The compound formed by every metal ion with another anion possesses a different solubility depending…

Q: A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3…

A: First of all we have to calculate the moles of Fe2O3. From that only we get the moles of Fe and…

Q: An impure sample of Na2SO4 weighed 1.562g. A BaSO4 precipitate from this sample weighed 2.496g.…

A: Percentage of sulphur is 13.74% .

Q: Limestone rocks are composed mainly of calcium carbonate (CaCO3) that reacts easily with       an…

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Q: A 2.5624-g sample of a pure solid alkali metal chloride is dissolved in water and treated with…

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Q: In the laboratory you are given the task of separating Pb2+ and Ag+ ions in aqueous solution.   For…

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Q: In an experiment, a 500.0 mL solution of approximately 0.250 M KOH (56.106 g/mol) solution was…

A: Standardization reaction is a reaction in which the concentration of the unknown analyte can be…

Q: A 0.3867-g sample that contains a mixture of Na,so, (142.04 g/mmol) and (NH ),SO, (132.14 g/mol) is…

A: Given data Total mass of mixture = 0.3867 g mass of precipitate (BaSO4) = 653.3 mg molar mass of…

Q: Suppose 7.00 g of AGNO3 is added to a solution which contains an excess of dissolved KBr. If 7.32g…

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Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO,),(aq), until no further…

A: Stoichiometric relation help in finding the relationship between the quantity of reactant and…

Q: In the laboratory you are given the task of separating Ba2+ and Co2* ions in aqueous solution. For…

A: For the reagents listed below we categorized as whether it will form precipitate or not and if so it…

Q: The balanced equation for the reaction of aqueous Pb(CIO,), with aqueous Nal is Pb(CIO,),(aq) + 2…

A: Molarity of NaI = 0.180M Volume of NaI solution = 0.200L Molarity = moles÷volume  Moles of NaI =…

Q: The calcium from a sample of limestone weighing 699mg was precipitated as CaC2O4 and ignited to CaO…

A: The ignition of calcium oxalate can be described as follows: CaC2O4  →  CaCO3  + COCaCO3   →  CaO  +…

Q: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of CaCO3,…

A: Given: Hardness=175 mg CaCO3/L

Q: A 1.00 g mixture of H2O and D2O was electrolyzed producing H2(g), D2(g) and O2(g).  The H2(g) and…

A: The reactions involved are: Cl2+H2O⇒HOCl + HClCl2+D2O⇒DOCl + DCl

Q: weight of Mn

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Q: A solution of NaCI(aq) is added slowly to a solution of lead nitrate, Pb(NO,),(aq), until no further…

A: First we find the moles of PbCl2 , from the moles of PbCl2 and using the Balanced chemical equation…

Q: The presence of soluble chromium compounds in wastewater is of great environmental concern. As part…

A: Given : Concentration of Cr(NO3)3 = 1.75 M Volume of Cr(NO3)3 solution = 150.0 mL = 0.150 L…

Q: In the laboratory you are given the task of separating Ag+ and Co2+ jons in aqueous solution. For…

A: For separation of two ions from aqueous solution we have to use such salts which selectively forms…

Q: A mixture containing FeCl3 and AlCl3 only weighs 750.8 mg. The chlorides were precipitated using…

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Q: weight of Mn ore

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Q: This

A: According to the question, a 235.2 g sample of ground water is analyzed for calcium. The Ca2+ in the…

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO,),(aq), until no further…

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Q: A sample weighing 0.2500g contains chloride ions, which precipitate as silver chloride. The formed…

A: We have to predict the Percentage concentration of chloride in the sample.

Q: 0.9545 g of calcium nitrate salt, Ca (NO3) 2, is weighed, dissolved in concentrated HCl solution and…

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Q: It is known that when mixed in solution aqueous, silver ions will react with chloride ions to form…

A: The balance chemical equation for a reaction when AgNO3 and KNO3 are mixed with concentrated KCl…

Q: In the preparation of Rochelle salt (MW = 282.83 g/mol), 6.6 grams of monohydrated Sodium carbonate…

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Q: 5. A 0.5664 g ore sample is dissolved in nitric acid and then filtered. The aluminum is present in…

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Q: Sodium bicarbonate (baking soda), NaHCO3, can be purified by dissolving it in hot water (60 °C),…

A: Interpretation: From the given information, the percent yield of NaHCO3 when it is purified by the…

Q: A 1.00 g mixture of H2O and D2O was electrolyzed producing H2(g), D2(g) and O2(g).  The H2(g) and…

A: Reactions involved are-Cl2+H2O→HOCl+HClCl2+D2O→DOCl+DCl Given, The HCl and DCl  were then…

Q: The balanced equation for the reaction of aqueous Pb(ClO,), with aqueous NaI is Pb(CIO,),(aq) + 2…

A: Given: Pb(ClO3)2 (aq) + 2 NaI (aq) ------> PbI2 (s) + 2 NaClO3 (aq) Volume of Pb(ClO3)2 = 1.50 L…

Q: 1. A sample containing magnetite, Fe;O4, was analyzed by dissolving a 1.5419-g sample in…

A: A numerical problem based on isolation of metals, which is to be accomplished.

Q: A sample of 0.6760 g of an unknown compound containing barium ions (Ba) is dissolved in water and…

A: Introduction The mass percentage of any particular compound can be calculated by simply applying the…