E3 Recycling Aluminum - product is 97.7 C 97.9 C, what does...

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EXPERIMENT 3 Recycling Aluminum Write answers to these pre-laboratory questions in your lab notebook, due at the beginning of your lab section during the week of September 19–23. Pre-laboratory Questions: 1. Write the experiment title and purpose in your lab notebook. 2. During the experiment, aluminum metal is converted into KAl(SO 4 ) 2 · 12H 2 O, more commonly known as alum. What is the percent aluminum by mass in alum? 3. The purity of the alum produced in the reaction will be examined by measuring its melting point range. If the experimentally measured melting point range of your final
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Unformatted text preview: product is 97.7 C 97.9 C, what does this indicate about the product? 4. What safety precautions are to be taken during this experiment? 5. Look up the MSDS ( http://www.vwrsp.com/search/index.cgi?tmpl=msds ) of ethanol. What are the hazards of ethanol and what first aid measures should be taken? 6. Sketch out a tentative experimental procedure. This procedure need not be overly detailed; a few sentences or an outline should suffice....
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