Alum Aluminum
10
Mar/110
Mar/110
How many grams of alum may be obtained from 20.0 g of aluminum when the reaction product with a yield of 100%? 80%?
Need help! Thank you:)
What do you mean by alum? The aluminum sulfate? aluminum sulfate anhydrous chemical formula of Al2 (SO4) 3. Thus, it has a molecular weight of 27 * 2 + 3 * (32 + 4 * 16) = 342 therefore 100% reaction would be a return of 20 * 342/54 = 126.7 g reaction of 80% would give 20 * 342/54 * 0.8 = 101.3 g
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