ORE Formula metal ORE Formula metal Bauxite Al,O, -2H,O Al Zincite ZnO Zn Copper Iron Pyrites CuFeS, Cu Rock salt NaCI Na Zinc Blende ZnS Zn Cinnabar HgS Hg Magnesite MgCO, Mg Magnetite Fe,O, Fe 3. 4. Epsom salt MgSO, -7H,O Mg Galena PbS Pb Horn Silver AgC/ Ag Gypsum CaSO, 2H,O Са Рyrolusite MnO, Mn Lime stone СаСО, Са Haematite Fe,O, Fe Carnallite KCI MgCl, 6H,O Mg

ORE Formula metal ORE Formula metal Bauxite Al,O, -2H,O Al Zincite ZnO Zn Copper Iron Pyrites CuFeS, Cu Rock salt NaCI Na Zinc Blende ZnS Zn Cinnabar HgS Hg Magnesite MgCO, Mg Magnetite Fe,O, Fe 3. 4. Epsom salt MgSO, -7H,O Mg Galena PbS Pb Horn Silver AgC/ Ag Gypsum CaSO, 2H,O Са Рyrolusite MnO, Mn Lime stone СаСО, Са Haematite Fe,O, Fe Carnallite KCI MgCl, 6H,O Mg

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 27Q

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6. How is steel manufactured by acid bessemer process? What are the advantages anddisadvantages of the process?
(a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000g is treated with 0.6000g of pure H2C2O4•2H2O and dilute H2SO4 and after reduction has taken place (MnO2 + H2C2O4 + 2H+→ Mn2++ 2CO2 + 2H2O), the excess oxalic acid requires 26.26ml of 0.1000N KMnO4 for titration? (b) If pure As2O3 were used instead of oxalic acid, how many grams would be required in order for the other numerical data to remain the same?
Use atomic properties to explain the reduction of a less ac-tive metal by a more active one: (a) in aqueous solution; (b) inthe molten state. Give a specific example of each process
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World production of chromite (FeCr₂O₄), the main ore ofchromium, was 1.5107metric tons in 2003. To isolate chro-mium, a mixture of chromite and sodium carbonate is heated inair to form sodium chromate, iron(III) oxide, and carbon diox-ide. The sodium chromate is dissolved in water, and this solutionis acidified with sulfuric acid to produce the less soluble sodiumdichromate. The sodium dichromate is filtered out and reduced with carbon to produce chromium(III) oxide, sodium carbonate,and carbon monoxide. The chromium(III) oxide is then reduced to chromium with aluminum metal. (a) Write balanced equations for each step. (b) What mass of chromium (in kg) could be pre-pared from the 2003 world production of chromite?
How many cubic feet of air at a pressure of 760 torr and 0 C is required per ton of Fe2O3 to convert that Fe2O3 into iron in a blast furnace? For this exercise, assume air is 19% oxygen by volume.
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(a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000 g is treated with a 0.6000 g of pure H2C2O4.2H20 and dilute H2SO4 and after reduction has taken place (MnO2 + H2C2O4 + 2H+ Mn2+ + 2CO2 + 2H2O), the excess oxalic acid requires 26.26 mL of 0.1000 N KMNO4 for titration? (b) If pure As2O3 were used instead of oxalic acid, how many grams would be required in order for the other numerical data to remain the same?
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Hem‎oglobin is sai‎d to be an examp‎le of coordination compou‎nd. This is because a. T‎he molec‎ule is ab‎le to bi‎nd Oxygen us‎ing heme stru‎cture. b. It cont‎ains a tra‎nsition metal Fe +2 and it is solu‎ble in w‎ater. c. It cont‎ains a ligand (heme) that is coordi‎nated to Fe +2, which is a Lewis acid. d. It is a colo‎red comp‎lex because of the presen‎ce of the he‎me.
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What is the Csp for copper in cal/g*C