a). Multiply the atomic mass of Al by 2 = _____?
b). Multiply the atomic mass of O by 3 = _____?
c). Add (a) and (b) to get the formula mass of Al2O3
d). Find the % of Al in Al2O3:
%Al = [(a)/(c)]*(100)
e). Multiply the mass of Al2O3 given in the question by the % of Al. Divide the answer by 100 to get the mass of Al in the sample. It should be less than 9.8 g.
When 9.8g of aluminum oxide(Al2O3) decomposes, how many frams of aluminum metal are produced?
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