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How can ores be formed? Yahoo Answers

2011-6-20  Gold and Silver for example are infused into fractures via hydrothermal solutions, the "soup" contained in hot water solution of Au and Ag is shot toward the surface in hydrothermal vents, as the water rises through the earth is cools and micron particles of gold or silver

Why is silver often found with gold and Yahoo

2010-2-16  Often ore minerals (such as copper, gold, silver) are found together in ore deposits. The short answer is that the association is more the product of the types of rocks that the minerals a hosted and the source of the mineralizing fluids that deposit the ores. Many ore bodies are the result of late -stage melts of crustal or oceanic crustal rocks.

An ore contains 2.47 g of silver per ton Yahoo

2011-1-29  2.47g is in 1000kg i.e. 10^6 g. now number of particles per million=grams of silver in 10^6g of ore=2.47. Answer:2.47ppm

What is the appearance of silver? Yahoo Answers

2013-9-3  Silver is a soft, ductile, malleable, lustrous metal. It has the highest electrical and thermal conductivity of all metals. Silver is considered to be non-toxic. However, most silver salts are poisonous and some may be carcinogenic.

2.3 X 10^24 ions of silver are found in Yahoo

2020-3-12  Each formula unit of Ag₂CO₃ contains 2 Ag⁺ ions. (2.3 × 10²⁴ Ag⁺ ions) × (1 formula unit of Ag₂CO₃ / 2 Ag⁺ ions) = 1.15 × 10²⁴ formula units of Ag₂CO₃

What is the specific heat of silver? Yahoo Answers

2012-6-29  So look up the molar mass of silver in the periodic table (107.9g) and simply use dimensional analysis to change the units from moles to grams in the molar heat capacity: (25.35 J/mole*C)(1 mole/107.9g) = about 0.2349 J/G*C and thus, this is your specific heat of silver.

what do you mean by enrichment of ores ? Yahoo

2007-7-24  Enrichment of ores means increasing the metal (or non-metal) content of an ore by removing as much of the minerals in the ore that do not contain the desired substance. This can be done by several means including screening, gravity separation, magnetic separation and fine grinding followed by froth flotation; to concentrate the metal-rich

What are mineral ores used for? Yahoo Answers

2020-10-8  Most ores are not valuable because of the mineral itself, but because of the value of the metal that is contained in the mineral. We have to free that metal from the mineral and separate it away from the non-value elements, in order to get a pure metal product that

why can heating with carbon not be used Yahoo

2021-1-22  There is a list of the reactivity of metals. Those above carbon in the reactivity series cannot be reduced by carbon, e.g. Sodium, Potassium, Magnesium, Aluminium. Those below carbon in the reactivity series can be reduced by carbon, e.g. Iron, Copper, Silver. Those above carbon in the reactivity series, historically, could not be isolated.

wat is a metal? Yahoo Answers

2007-10-17  Silver is substantially less expensive than these metals, but is often traditionally considered a precious metal for its role in coinage and jewelry. [edit] Extraction. Main articles: Ore and Mining. Metals are often extracted from the Earth by means of mining, resulting in ores that are relatively rich sources of the requisite elements.

鈷是什麼?(英文答案) Yahoo 知識+

2007-2-26  Cobalt is a hard, lustrous, silver-gray metal, a chemical element with symbol Co. It is found in various ores, and is used in the preparation of magnetic, wear-resistant, and high-strength alloys. Its compounds are used in the production of inks, paints, and varnishes. 27.

advantages and disadvantages of mining metal ores

Yahoo! Canada Answers Mining advantages and Apr 04, 2012 · The advantages and disadvantages of mining can be determined based on facts Mining for gold, coal and other ores are valuable (metals, coal) that are »More detailed

Runescape Smithing Quests? Yahoo Answers

2008-3-30  The Giant Dwarf = 2,500 XP This quest requires 12 Crafting, 14 Thieving, 16 Firemaking, 33 Magic, Log (any kind), Coal, Iron Bar, Tinderbox, 3 Cut Sapphires, Redberry Pie (if you don't have the Blurite Sword), Telekinetic Grab Runes, 200GP, 12-30 of either Copper, Tin, Iron, Coal, Mithril, Silver or Gold ores, 2-5 bars of either Bronze, Iron

chem 42 QUESTION Yahoo 知識+

2009-12-25  2. Which of the following is a physical change? (1 mark) A. Corrosion of iron B. Heating a piece of aluminium ribbon C. Mixing an acid and an alkali D. Boiling water 3. Which of the following elements exists only as compound form in the nature? (1 mark) A. Gold B. Nitrogen C. Magnesium D. Oxygen 4. Substances which cannot be divided into two or more substances are called (1 mark) A.

please help with this? Yahoo Answers

2014-1-2  1. Which of the following were the main proponents of NAFTA? A. Environmentalists B. Human rights groups C. Labor unions D. Large corporations 2. Which of the following is the primary subsistence crop in Latin America? A. Potatoes B. Beans C. Corn D. Wheat 3. Among the northern Andean countries strongly involved in the illegal coca and drug trade, __________ is now the

In Brief—Mt. Isa Metal Ores and Noah’s Flood

The silver-lead-zinc ore is found as thin layers of minerals alternating with bands of hardened mud (shale), whereas the copper ore consists of cross-cutting veinlets of copper minerals within masses of ‘silica dolomite’ Most geologists today agree that the minerals at Mt.

2KClO3(s) ---> 2KCl(s) + 3O2(g)? Yahoo Answers

2010-5-4  How many L of O2 gas at STP are formed when 15.0 g of KClO3 reacts? A) 1.83 L B) 4.11 L C) 22.4 L D) 7.30 L E) 2.74 L

Runescape how to transfer items? Yahoo Answers

2008-5-20  If the 2 characters are about the same combat level, you could use Bounty Hunter to transfer the item. I don't think something like a rune 2h would even give you a silver skull, so it wouldn't be very hard to do. The easiest way would probably be to just earn the cash to buy a rune 2h on the char that needs it. They're only like 40k these days

Answers about Chemistry

This category encompasses all questions about the composition, structure, properties, and reactions of matter.