The calcium from a sample of limestone weighing 607.4 mg  was precipitated as CaC2O4 (128.10 g/mol) and ignited to CaCO3 (100.09 g/mol) weighing 246.7 mg. Calculate the % Ca (40.08 g/mol) in the sample.

Q: the determination of iron in limonite, 0.5166 g of minerals dissolve in acid and Fe2+ is titrated…

A: First find the moles of K2Cr2O7 utilized. Then using reaction stoichiometry finally the moles of…

Q: 0.683 grams of iron mineral dissolves with acid. Fe2+ ​​is titrated with Ce(SO4)2 solution.…

A: Answer is explained below.

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

A: A numerical problem based on inorganic chemistry, which is to be accomplished.

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Q: Sodium oxalate, Na2C2 04, in solution is oxidized to CO2 (g) by MnO, which is reduced to Mn2+. A…

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Q: Given: 0.35g NaCl, 0.25 g NaHCO3, 0.15 g KCl & 2 g C6H12O6 are present in 100 mL ORS solution (MW:…

A: Given:  0.35g NaCl, 0.25 g NaHCO3, 0.15 g KCl & 2 g C6H12O6 are present in 100 mL ORS solution…

Q: A 1.1324 g sample of magnetite ore was dissolved in concentrated HCl to give a solution that…

A: Mass of Fe = 55.845 g/molMass Fe2O3 = 159.69 g/mol

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A: Given, mass of K3Fe(CN)6 = 1210 mg = 1.210 g Molar mass of K3Fe(CN)6 = 329.2 g/mol Volume of…

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A: The molarity is one of the measure of concentration of the solution.  This is defined as the no of…

Q: 0.250 g sample of impure CaCl2 is titrated with 40.00 mL  0.105 M AgNO3 solution. Calculate the…

A: Given: 1) Mass of impure CaCl2 = 0.25 g 2) Volume of AgNO3 = 40 mL 3) Concentration of AgNO3 = 0.105…

Q: In the determination of iron in limonite, 0.5166 g of mineral is dissolved in acid and Fe2 + is…

A: This question is related to finding out the percentage of Fe2+ in the given iron ore sample. First…

Q: Calculate the ppm Na+ (23.00 g/mol) in the solution

A: Given 0.3000 g of Na3PO4 (163.94 g/mol) is dissolved in water and diluted to 100.0 mL  We have to…

Q: BaSO, precipitated from a 1.800 g sample was contaminated with 9.4 mg of Ferrous sulfate and weighed…

A:

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. A 0.3108-g sample of primary-standard-grade Na2 C2O4 was dissolved in H2SO4 and titrated with…

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Q: The active ingredient in Antabuse, a drug used for the treatment of chronic alcoholism, is…

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Q: What volume of 1.73 M K2Cr2O7 is required to titrate 1.85 g of CH3OH dissolved in 30.0 mL of…

A: Given: Mass of CH3OH=1.85 g The molar mass of CH3OH=32.04 g/mol Moles=Given mass/ Molar mass…

Q: 7. Calculate by factors the following: a. The tons of limestone (CACO3) needed for the preparation…

A: 1. Formation of CaO using CaCO3 is given by the equation- CaCO3 → CaO + CO2 2. Electrolysis of BaCl2…

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A:

Q: A sample is known to consists of NaOH, or NaHCO3 or Na2CO3 or possible compatible mixture of these,…

A: Methyl   HCl Orange   1.1 g             31.40 mL Phenolphthalein HCl 13.30 mL % of inert matter 31,4…

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A: 6. Answer - The balanced chemical equation for the problem is: CdSO₄ + H₂S  → CdS + H₂SO₄ Getting…

Q: 0.6465 grams of bleach, Ca(OCl)2, is dissolved in acid and treated with excess KI. Calculate the…

A: The question is based on quantitative analysis. we have to calculate percentage calcium hypochlorite…

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Q: A. 1.4639 g sample of limestone was analyzed for Fe, Ca and Mg. The iron was determined as Fe2O3,…

A:

Q: 1. The hydrogen sulfide in a 75.0 -g sample of crude petroleum was removed by distillation and…

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Q: The solubility of Ag2SO3 is measured and found to be 4.51x10-3 g/L. Use this information to…

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A: Given: For the first titration, Mass of the given sample = 1.219g Volume of the sample = 200 mL…

Q: To determine the amount of magnetite. Fe3O4, in an impure ore, a 1.5419 g sample is dissolved in…

A: The Fe2O3 formed is pure. Hence, we can use it to determine the mass of iron taken initially in the…

Q: If 0.15g of Calcium hydroxide is needed in preparing 50mL of Calcium hydroxide topical solution,…

A:

Q: A sample known to consist of NaOH orNaHCO3, or Na2CO3 or possible compatible mixtures of these,…

A: 2Na2​CO3​+2HCL⇌2NaHCO3​+2NaCL b) 2NaHCO3​+2HCL​⇌2NaCL+2H2​CO3​

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A: Given: Weight of sample of bauxite = 1.250 g Mass of Al2O3 recovered =0.2890 g Mass of Ash = 0.0007…

Q: A newly discovered iron ore was weighted (5.408 g) and worked up to produced 0.3785 g of ignited…

A: 1.We are given iron weighted =5.408 gm Fe2O3 produced=0.3785 gm molar mass ofFe2O3 =160 gm/mol

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Q: Given: 0.35g NaCl, 0.25 g NaHCO3, 0.15 g KCI & 2 g C6H1206 are present in 100 mL ORS solution (MW:…

A:

Q: A sample of iron ore weighing 0.6248 g is dissolved in acid, the iron reduced to Fe²⁺, and the…

A: Given data,Mass of iron sample=0.6248gVolume of K2Cr2O7=33.60mLNormality of K2Cr2O7=0.1502NFormula…

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A: #Part-1: We are given an unbalanced redox reaction which is: Fe(s) + C2HCl3(aq) ---> Fe2+(aq) +…

Q: 1,5419 g of magnetite (Fe3O4) ore; Fe+2 and Fe + 3 in concentrated HCL to form a mixture it's…

A:

Q: In the determination of iron in limonite, 0.5166 g of mineral is dissolved in acid and Fe2 + is…

A: Molarity of solution is equal to the number of moles of solute divided by the volume of solution in…

Q: Fe (55.85 g/mol) is precipitated as Fe(OH)3 (106.87 g/mol) which is typically ignited to form Fe2O3…

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A: Given : Ksp = 2.5 x 10-16 M.wt = 241.2 g/mole

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A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.