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Unformatted text preview: darker blue. The solution was settled over a blue/purple flame and was consistently heated and stirred. The solution became very thick and turned a dark grey color before it was allowed to cool. On the bottom of the beaker the solid was allowed to settle and the liquid remained on top. Once this was settled the liquid was decanted of a light green/yellow liquid. Sulfuric acid was added to the brown/black solution until it turned a blue/green color. Zinc was then added to the solution, a yellow gas was emitted and the solution started to bubble. It then turned maroon and was warm to the touch, debris began to float. After the solution was decanted and filtered. The filter paper was dried and the weight of the copper in the dime was determined. The weight of the coin before it was destroyed was divided by the weight of the copper to find the percent by mass- 22.29%....
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This lab report was uploaded on 04/07/2008 for the course BIOL 152 taught by Professor Schnurr/vawter during the Spring '08 term at Wells.
- Spring '08