Metal sulfides

September 5th, 2008


Metal sulfides

Base Metal Sulfide Deposits in Sedimentary and Volcanic Environments: Proceedings (Special Publication No. 5 of the Society for Geology Applied to M)
Author: Gunther H. Friedrich
Hardcover:  290 pages
Company: Springer  (1988-03)
ISBN: 0387182020
List Price: $104.00
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Mineral Chemistry of Metal Sulfides (Cambridge Earth Science Series)
Author: David J. Vaughan, James R. Craig
Hardcover:  512 pages
Company: Cambridge University Press  (1978-06-30)
ISBN: 0521214890
List Price: $109.95
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Solutions to Hydrogen Attack in Steels
Solutions to Hydrogen Attack in Steels Author: P. F. Timmins
Hardcover:  225 pages
Company: ASM International  (1997-12)
ISBN: 0871705974
List Price: $175.00
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Sulfide - Wikipedia, the free encyclopedia
Many metal sulfides are so insoluble in water that they are probably not very toxic. Some metal sulfides, when exposed to a strong mineral acid, including gastric acids, will ... (more...)

CHEMETALL >>> Produkte | Festschmierstoffe | Solid lubricant | Sulfide ...
Use of Metal Sulfides ... Friction Materials Chemetall Ges.m.b.H. has been engaged in the research, development and manufacture of solid lubricants for the friction lining industry ... (more...)

The Mineral Gallery - Sulfides Class
... of the Sulfosalts. This is a large segment of the sulfide class whose difference from the other sulfides lies in the position of the semi-metal ions. In most ordinary sulfides ... (more...)

SELECTIVE PRECIPITATION OF METAL SULFIDES - Patent
Abstract: A method for recovering zinc ions by selective zinc sulfide precipitation from an aqueous solution comprising zinc ions and metal ions of a metal that ... (more...)

Bacterial Leaching of Metal Sulfides Proceeds by Two Indirect ...
The acid-insoluble metal sulfides FeS 2, MoS 2, and WS 2 are chemically attacked by iron(III) hexahydrate ions, generating thiosulfate, which is oxidized to sulfuric acid. (more...)

Bacterial Leaching of Metal Sulfides Proceeds by Two Indirect ...
Corresponding author. Mailing address: Abteilung Mikrobiologie, Institut für Allgemeine Botanik, Universität Hamburg, Ohnhorststraße 18, D-22609 Hamburg, Germany. (more...)

Electrochemistry Encyclopedia --- Extracting metals from sulfide ores
Many important metals are present in nature combined with sulfur as metal sulfides; these include cadmium, cobalt, copper, lead, molybdenum, nickel, silver, and zinc. (more...)

Microbial Processing of Metal Sulfides
Microbial Processing of Metal Sulfides books - find the latest books, CD-ROMs and science and technical publications from over 50 life science publishers (more...)

REPLACEMENT OF BASE METAL SULFIDES BY ACTINOLITE, EPIDOTE, CALCITE ...
replacement of base metal sulfides by actinolite, epidote, calcite, and magnetite in the ug2 and merensky reef of the bushveld complex, south africa (more...)

YES TECHNOLOGIES: Biocatalyzed anaerobic oxidation of metal sulfides ...
Description: A novel anaerobic bioprocess for liberating precious metals like gold and silver from sulfidic ores. As near-surface, oxidized ore reserves are depleted, gold ... (more...)

Open Question: Writing and Balancing word and chemical equations?
I have already done 25 of these questions but I am having trouble with 5 of them Whats the word and chemical equation and what is it when its balanced...? 1.Aresentic3 chloride and hydrogen sulfide react to produce arsenic 3 sulfide and hydrogen chloride 2. Sodium carbonate and phosphoric acid react to produce sodium phosphate and water plus carbon dioxide. 3. When water us added to liquid silicon tetrachloride the result is that solid silicon dioxide and hydrogen chloride gas are produced. 4. Metallic zinc reacts with a solution of lead2 nitrate. Solid lead metal is formed together with a solution of zinc nitrate 5. Propane gas (C3H8) was burned to keep warm. When is burns it reacts with oxygen gas to produce carbon dioxide gas and water vapour. Thanks for any help :) (more...)

Resolved Question: Is anyone good at writing or naming chemical formulas?
I'm having a tough time in chemistry. I think I have it right, though. I wrote my answers down, so correct me if I'm wrong. I may have a few blank spots. dinitrogen hexabromide N2Br6 ammonium carbonate NH4CO3 potassium phosphide KPO3 mercury (II) acetate HgC2H3O2 phosphoric acid HP copper (I) sulfate CuSO4 iron (III) permanganate Fe3MnO4 calcium hydroxide CaOH carbon tetrachloride CCl4 barium sulfide BaS Identify each as 'I' for ionic, 'M' for molecular, or 'A' for acid, then write the name. Prefixes are used when naming molecular compounds. Roman numerals are used to designate the __________ of most transition metals. CaO- M Calcium oxide MG(OH)2- M Magnesium dihydroxide CuC2H3O2- M Copper (i) acetate HgF2- M Mercury (I) flouride H3N- A Trihydrogen nitride Ba3(PO4)2- M Tribarium diphosphate NO3- I Nitrate Cl2O- M Dichlorine oxide (NH4)2S- M Diammonium sulfide H2SO4- A Dihydrogen sulfade This is all realllly confusing, so could someone help me step by step? (more...)

Resolved Question: Chemistry help please! 10 pts best answer!?
1: The Frasch process is used to mine lead potassium sulfur uranium 2: The most striking physical characteristic of hydrogen sulfide is its color density odor solubility in water 3: The formula for hydrosulfuric acid is H2S H2SO2 H2SO3 H2SO4 4: If the volume of sulfuric acid in an uncovered beaker increased gradually during a perios of several weeks, the increase was probably due to the absorption of carbon dioxide nitrogen oxygen water 5: The most stable form of sulfur at room temperatre is amorphous monoclinic prismatic rhombic 6: Sulfuric acid is used in the preparation of other acids because it is an oxidizing agent is dense has a high boiling point is a dehydrating agent 7: The acid contained in storage batteries is acetic hydrochloric nitric sulfuric 8: Hydrogen sulfide forms a white precipitate when passes into a solution of Cd(NO3)2 Pb(NO3)2 CuCl2 ZnSO4 9: A sulfur compound that will readily dissolve sulfur is H2SO4 SO2 CS2 H2S 10: SUperheated water heated to 167oC is used in the Frasch process to clean the pipes clean the sulfur dissolve the sulfur melt the sulfur 11: A catalytic agent used in the contact process for the manufacture of H2SO4 is Ni MnO2 Pt ZnO 12: When sulfur reacts with oxygen, heat is neither liberated nor absorbed absorbed liberated sometimes liberated and sometimes absorbed 13: A sulfur compound used as a refrigerant is hydrogen sulfide sulfuric acid sulfur dioxide sulfur trioxide 14: The sulfur compound used to preserve food is H2S SO2 SO3 H2SO4 15: The chemist finds H2S useful in preparing sulfuric acid testing for metals bleaching refining petroleum 16: Sulfur and oxygen both have six electrons in their outer orbits. One of the valences for sulfur is therefore -4 -1 -2 2 17: Rhombic sulfur may be prepared by slow cooling of melted sulfur rapid cooling of boiling sulfur evaporation from a sulfur solution in carbon disulfide sublimation 18: Sulfur dioxide is used in commercial refrigerators because the gas is easily liquified dissolves in water is cold decolorizes KMnO4 I really need a good grade in this class, so if you aren't sure, please don't say anything. Thank you in advance. :) (more...)

Resolved Question: S.O.S Chemistry Help?
The substance that is oxidized in the reation Fe2O3 + 2AI---> AI2O3 +2Fe is? a.) Fe2O3 b.) AI2O3 c.) AI d.) Fe A silver vase is exposed to the air for a long time is most likely to have an outer coatinf\g of ______? a.) silver metal b.) silver solfide c.) silver oxide d.) hydrogen sulfide Electrons gained and lost during a redox reaction can be determined by examining the ___________ of the electrons involved. a.)symbols b.)oxidation number c.)formulas d.)coefficients In the equation AI + CI2 --> AICI3, the oxidation number of AI changes from ______ to _________? a.) 0,3+ b.) 3+, 0 c.) 0, 1- d.) -1, 0 (more...)

Resolved Question: The black "smoke" that flows out of deep ocean hydrothermal vents is made of insoluble metal sulfides...?
suspended in seawater. Of the following cations that are present in the water flowing up through these vents, which ones could contribute to the formation of the black smoke? there could be more than one answer: Fe2+ Na+ Mn2+ Mg2+ Ca2+ Cu2+ Li+ Pb2+ Zn2+ this question is so weird. thanks in advance! (more...)

Resolved Question: Chemistry questions please!? 10 points to the best answer.?
1: Anhydrides are usually acids bases oxides sulfides 2: An acid contains replaceable hydrogen never contains oxygen never ionizes turns litmus blue 3: Water reacts with the oxides of many metals to form acids anhydrides bases salts 4: The positive ion of a base and the negative ion of an acid react to form an element a gas a radical a salt 5: An acid anhydride is HCl H2O SO2 CaO 6: An acid which contains no oxygen is sulfuric hydrosulfuric sulfurous persulfuric 7: Nitric acid has the formula HNO3 HO2 KIN HNO 8: A basic anhydride has the formula SO2 MgO P2O3 CH4 9: A substance which turns litmus blue is a(n) acid base salt water 10: The compound formed when a metal replaces the hydrogen in an acid is a(n) acid base salt indicator 11: A compound always formed in neutralization is NaCl HCl H2O NaOH 12: A metal which will form a base when reacted with water is Zn Na Fe Cu Thank you : ) (more...)

Voting Question: science formula. don't get it ?
1) Calcium hydroxide neutralizes hydrochloric acid (HCI) and than forms Calcium chloride and water. 2) adding sodium nitrite ( nitrite: NO2 sup +1) to Ammonium chloride forms Nitrogen gas (N2), Sodium chloride and water. 3) When Zinc metal is added to hydrochloric acid, Zinc chloride and Hydrogen has (H2) are formed. 4) by adding Ammonium chloride to Calcium oxide, the result is Calcium chloride, Ammonia (NH3) and water. 5) When Copper II hydroxide comes in contact with lithium sulfide, the reaction yields Lithium hydroxide and Copper II sulfide. 6) If Nitrigen (N2) gas comes in contact with Aluminum fluoride, Fluorine has ( F2) and Aluminum nitride are formed. (more...)

Resolved Question: What is metal sulfide?
I'm wondering about them. Please answer if you want thanks again! (more...)

Resolved Question: balancing chemical equations?
In the first step of refining zinc metal from its zinc sulfide ore, the ore is heated in the presence of oxygen. The products are solid zinc oxide and sulfur dioxide gas. Write a word equation, a skeleton equation, and a balanced chemical equation. (more...)

Resolved Question: What are the skeleton equations?
What are the skeleton equations of these problems: When solid mercury (II) sulfide is heated with oxygen, liquid mercury metal and gaseous sulfur dioxide are produced Heating potassium chlorate in the presence of the catalyst manganese (IV) oxide produces oxygen gas. Potassium chloride is left as a solid residue (more...)

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