Problem: Find the mass of barium metal (in grams) that must react with O2 to produce enough barium oxide to prepare 1.3 L of a 0.13 M solution of OH–.

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2Ba(s) + O2(g) → 2BaO(s)

BaO(s) + H2O(l) → Ba(OH)2(aq)

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Find the mass of barium metal (in grams) that must react with O2 to produce enough barium oxide to prepare 1.3 L of a 0.13 M solution of OH–.

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