Silver metal in the atmosphere with oxygen in the air with thukoksidechan humidity.The substance that is usually black, metallic silver are compounds of sulfur, often as the H2S comes from burning fuel.The skin reaction the gloomy atmosphere, H2S is the money. 2Ag + H2S +1/2 O2 → Ag2S + H2OWhen in an atmosphere containing sulfur to sulfide (Cu2S), a Copper surface because the rate of Sulfidation reaction copper occurs faster than money.
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