coinage so was new. Coins were prestigious only for their weight in silver or gold‚ and circled close varied differing kinds of valuable metal. this is often what’s called a bullion economy‚ within which the burden and also the cleanness of the precious metal square measure what’s essential‚ not what form the metal takes. By a good margin the foremost well-known metal within the economy was silver‚ albeit gold was likewise utilised. Silver circled as bars‚ or ingots‚ and in addition as adornments and trimmings
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the element Silver (Ag) which was first mixed with chloride (Cl). Together the two mixtures created a very white‚ milky type which is known by the name of Silver Chloride (AgCl). Iodine (I) was then mixed with silver to create a yellowish‚ whitish color which is normally called Silver Iodine (AgI). The mixture followed is Silver Oxide (Ag2O) which happens to contain hydroxide (OH) as well a silver. This compound ended up turning a very grey-brown like color as well as being gritty. Silver carbonate
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China (Shanghai) Pilot Free Trade Zone was launched on September 29‚ 2013. It is being used as China’s experiment field to test policies for economic and social reforms. The main characteristics of the free trade zone are its open market‚ freedom from the majority of the tariffs and its liberal investment policies. It was established as a solution to the slowdown in China’s economy and increasing concerns about the rising debt of the country. With the opening of this zone‚ Chinese private enterprises
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reaction occurs. 2. Ethanolic Silver Nitrate Solution. Label eleven small containers and place 0.1 mL or 100 mg of each of the following halides in the tubes: 1-chlorobutane‚ 2-chlorobutane‚ 2-chloro-2-methylpropane‚ 1-bromobutane‚ 2-bromobutane‚ 2-chloro-2butene‚ Iodoethane‚ 1-Chloroadamantane‚ Bromobenzene‚ 1-chloro-2-butene‚ 1-chloro-2-methylpropane. To each tube rapidly add 1mL of an 18% solution of sodium iodide in acetone. Repeat the procedure with 1% ethanolic silver nitrate solution. Data/Results:
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table‚ between groups 2 and 3. They are generally hard and dense‚ and less reactive than the alkali metals. Iron‚ copper‚ silver and gold are important transition metals. The transition metals: overview The elements in the centre of the periodic table‚ between groups 2 and 3‚ are called the transition metals. Most of the commonly used metals are there‚ including iron‚ copper‚ silver and gold The transition metals Common properties The transition metals have the following properties in common: they
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solubility differences of two anions and the titration endpoint of a precipitate. The net ionic reaction during the titration is as follows: Ag+ + Cl- → AgCl(s) The Ksp for AgCl is 1.8 x 10-10 and that for Ag2CrO4 is 1.2 x 10-12. Thus‚ as silver ions are slowly added to solution‚ AgCl precipitates first‚ removing the chloride ions from solution. As can be inferred‚ Ag+ ions react with almost all chloride ions before precipitation of Ag2CrO4 begins. Thus‚ the secondary reaction is
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Naphthalene Ball in Water Objective: In this experiment‚ we will determine if the naphthalene can be dissolve in water or not. And what will happen in the filter paper if we stick it in the funnel and let it absorbed the fumes in the boiling water with powdered naphthalene. Materials: Evaporating dish Spatula Watch Glass Filter paper Tripod Mortar and pestle Alcohol Lamp Funnel Beaker Data: Naphthalene 1. white crystalline compound 2. has a strong odor 3. round
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Allied Chemical to manufacture one thousand containers. Allied Chemical needs the containers for storage of five kinds of aqueous nitrate solutions. The aqueous nitrates are copper (II) nitrate‚ lead (II) nitrate‚ zinc nitrate‚ magnesium nitrate‚ and silver nitrate. You can not manufacture the containers from glass due to possible breakage. Nor will plastic containers do because plastic tends to harden over time and also may shatter. This leaves metal. Unfortunately‚ many metals get eaten away
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liquid -Small silver ball -Grew ten times original size -Rust Color -Clear transparent liquid A buildup of residue formed and the clear solution became cloudy with flaky matter. Iron & Magnesium Chloride -Clear transparent liquid -Silver nail - No Reaction -No reaction Zinc & Lead (II) Nitrate -Clear transparent liquid -Silver clump -Black and shiny Black powdery crystals formed within the solution and around the Zinc. Magnesium & Nickel Nitrate -Green liquid -Silver shiny strip
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Chemicals Solutions of Anions: Sodium chloride‚ NaCl‚ 0.2 M Sodium bromide‚ NaBr‚ 0.2 M Potassium iodide‚ KI‚ 0.2 M Sodium sulfate‚ Na2SO4‚ 0.2 M Sodium carbonate‚ Na2CO3‚ 0.2 M Sodium nitrate‚ NaNO3‚ 0.2 M Test Reagents: Silver nitrate‚ AgNO3‚ 0.1 M Ammonia‚ NH3‚ 6 M Nitric acid‚ HNO3‚ 6 M Potassium permanganate‚ KMnO4‚ 0.1 M Mineral oil Sodium hydroxide‚ NaOH‚ 6 M Barium hydroxide‚ Ba(OH)2‚ saturated Barium chloride‚ BaCl2‚ 0.1 M Acetic acid
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