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1. Copper metal is used to precipitate silver ions from solution (by reducing them to silver metal). Could copper also cause zinc ions to precipitate in this way and what is the reason? 2. What is meant in general by the law of conservation of mass? 3. If you obtained less than 100% of the mass of copper you started with in this experiment, what are two possible causes of this? 4. What gas is produced when acid is added to zinc metal? 5. Why is the 6 HCI added ( once the solution is colorless) after the zinc metal was added? 6. Why is concentrated HNO3 in the fume hood and not on the laboratory bench? 7. Define decant.
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