1.736 g of iron ore is dissolved with acid and precipitated as Fe2O3X.H2O. After the precipitate is filtered and washed, it is converted to Fe2O3. If the weight of Fe2O3 is 0.248 g, calculate the percentage of Fe in the sample?

Q: A feldspar sample was analyzed. In the analysis of 0.4270-g sample, a mixture of KCl and NaCl is…

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Q: a copper sample of mass 500g and purity 80% reacts with dilute nitric acid. a) Write the chemical…

A: Given that: Total mass of copper = 500g  The purity of copper = 80 % To find: chemical equation…

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 =…

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

A: ib

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: Determine the oxidation state of: 1. Cr in KCr2O7

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Q: 0.7336 g sample of an alloy containing copper and zinc is dissolved in 8 M HCl and diluted to 100 mL…

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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 ore containing magnetite, Fe3O4, was analysed by dissolving a 4.9 g sample in concentrated HCl,…

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Q: Hematite (F e 2 O 3 ) and magnetite (F e 3 O 4 ) are two ores used as sourcesof iron. Which ore…

A: The atomic mass of iron (Fe) and oxygen (O) atom is as follows; Atomic mass of Fe = 55.845 g/mol…

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: Ore containing the mineral clerite, MnSb,S,. is mined for its antimony content. During processing…

A: To get antimony content ore is mined. The mineral present in the ore is ------MnSb2S4. It is…

Q: If you use 10.0g of CuSO4 and excess NH3, what is the theoretical yield of Cu(NH3)4SO4?

A: Copper sulphate reacts with excess of ammonia to form a compound CuNH34SO4. Mass of CuSO4 is 10 g.

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

A: Given: The mass of iron (Fe) ore A is 1.500 g The mass of pure Fe2O3 in ore A is 0.5215 g The mass…

Q: What is the percentage of iron (AW 55.845 g/mol) in an ore if the weight of Fe203 (FW 159.687 g/mol)…

A: The molar mass of iron (III) oxide is = 159.687 g/mol The atomic mass of iron is = 55.845 g/mol The…

Q: A potassium permanganate solution is prepared by dissolving 4.68 g KMnO4 in water and diluting to…

A: Weight of substance when divided by its molar mass gives the number of moles of that substance.…

Q: Vanadium can be obtained by processing VO2 Which is 61.42% vanadium  and 38.58 % Oxygen. What mass…

A: Provided %of V in VO2= 61.42% Provided % of oxygen in VO2= 38.58% Let (w) mass of VO2 is needed to…

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

A:

Q: If you began with 24 moles of Fe203, approximately how many moles of pure iron would be formed as a…

A: Given :-  2 Fe2O3 + 3 C ----> 4 Fe + 3 CO2  Number of moles of Fe2O3 = 24 mol  To calculate :-…

Q: How do i find the oxidation state of Cr2+ ?

A: Oxidation number is the total number of electrons in an atom after losing or gaining electrons to…

Q: Vanadium can be obtained by processing VO2 Which is 61.42% vanadium and 38.58 % Oxygen What mass of…

A: The mass percent of vanadium in vanadium(IV) oxide is = 61.42 % The required mass of vanadium is =…

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

A:

Q: A chemist dissolves a 1.497-g sample of a type of metal (an alloy of Sn, Pb, Sb, and Cu) in nitric…

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Q: A 3.00-g sample of an alloy (containing only Pb and Sn) was dissolved in nitric acid (HNO 3).…

A: Given: Mass of alloy sample = 3.00 gMass of PbSO4 precipitated = 1.90 gMolar mass of PbSO4 = 303.3…

Q: Vanadium can be obtained by processing VO2 Which is 61.42% vanadium and 38.58 % Oxygen. What mass of…

A: The answer to the following question is-

Q: the oxidation state of vanadium in VO+2 is

A: Vanadium is a d-transition metal found in the group VA of the periodic table. The atomic number is…

Q: When iron rusts it forms Fe 2O 3. Name this product of air oxidation.

A: Name of Fe2O3 is Ferric oxide or iron(III) oxide. Rust is Fe2O3.xH2O . Hydrated ferric oxide is…

Q: How many grams of ironare produced from 1.00 Kg Fe2O3?The reaction is Fe2O3(s) + 3CO (g) → 2Fe(s) +…

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Q: Ore containing the mineral clerite, MnSb,S, is mined for its antimony content. During processing the…

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Q: A 8.12 kg mixed-mineral sample contains chromite (FeCr2O4) as the only chromium-bearing ore. The…

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Q: A mixture containing FeCl3 and AlCl3 weighs 5.95 g. The chlorides are converted to the hydrous…

A: Given: Weight of mixture containing FeCl3 and AlCl3 = 5.95g Let x be the mass of Fe and y be the…

Q: balance this chemical reaction       _____ NaHCO3   +      ____C2H4O2 →       _____  NaC2H3O2   +…

A: Balancing a chemical equation requires making the atoms of each element type equal on both sides of…

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

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Q: 0.5 g of the sample containing KHC204.H2C204 and inert impurities is dissolved in water and…

A: The required reactions are: KHC2O4 . H2C2O4    →Ca(OH)2  2 CaC2O42 CaC2O4 →∆ 2 CaO + 2 CO2 +  2CO

Q: (b) A metallurgical laboratory carried out analysis of a sample in which analysis of Mn was done by…

A: The mass of the ore sample is = 3.18 g The mass of the MnSO4 precipitate is = 0.28 g The percentage…

Q: Cerium(IV) sulfate in acidic solution is used to titrate a solution of arsenous acid, with which it…

A: Equation for the reaction is

Q: A mixture containing only FeCl3 and AlCl3 weighs 5.95g. The chlorides are converted to hydrous…

A:

Q: Cr in an ore exists as Cr2O3, and is converted quantitatively to BaCrO4 (253.33 g/mol). Calculate…

A:

Q: A mixture containing only FeCl3 and AlCl3 weighs 10.95 g. The chlorides are converted to the hydrous…

A: Weight of chloride mixture = 10.95g Weight of oxide mixture = 5.62g Molecular weight of FeCl3 is…

Q: A 0.8571 g sample of iron ore is dissolved in acid, the iron is oxidized to the +3 state and then…

A: The mass of the iron ore sample is = 0.8571 g The mass of iron(III) oxide is = 0.1132 g The molar…

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

A: % Fe3O4 =Amount of Fe3O4 in orein gAmount of sample in g×100%

Q: Calculate the percentage of Fe in pure iron(II) ammonium hexahydrate: (NH4)2[Fe(SO4)2] x 6H2O

A: The solution is as follows :

Q: . K3PO4 + Fe(NO2)2

A: In balanced chemical reaction number of atoms of each element in product side is equal to number of…

Q: A 0.896 g sample of impure magnesite, MgCO3, was decomposed with HCl; the liberated CO 2 was…

A: MgCO3 decomposed with HCl . The balance chemical equation for this reaction is :  MgCO3 + 2 HCl =…

Q: The phosphorus in a 0.2091-g sample was precipitated as the slightly soluble (NH4)3PO4 -12M0O3. This…

A: Given, mass of sample = 0.2091 g mass of PbMoO4=0.2922 g

Q: A mixture containing only FeCl3 (162.21) and AlCl3 (133.34) weighs 5.95 g. The chlorides are…

A: Let x and y be the masses of FeCl3 and AlCl3 in the 5.95g mixture, respectively. Thus, x + y = 5.95g…

Q: 24. A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure…

A: First of all we have to find mole of Fe from the mole of Fe2O3. From that we will get mass of Fe.…