محتاج حل الاسئلة دي ضروري
two gram portion of impure sodium chloride was dissolved in water .excess of silver nitrate was added to ppt 4.628 grams of silver chloride
calculate the % of chlorine in the sample
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a three gram portion of impure barium chloride was dissolved in water .excess of sodium sulphate was added to ppt 2 gram of barium sulphate . calculate the % of barium in the sample
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co2 concentration in water 200 ppm or higher is lethal to fish . will river water that contain 0.62 g of dissolved co2 per 2 kg be toxic to fish
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2cuo+cu2>>>> 4cu +so2
calculate the mass of copper (I) sulphide ore , which contain 30%
impurities needed to produce 3 ton of copper metal
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