An alloy of aluminum and magnesium was treated with sodium hydroxide solution, in which only aluminum reacts.
Question:
2Al(s) + 2NaOH(aq) + 6H2O(l ) → 2NaAl(OH)4(aq) + 3H2(g)
If a sample of alloy weighing 1.118 g gave 0.1068 g of hydrogen, what is the percentage of aluminum in the alloy?
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