Joseph Priestley first prepared pure oxygen by heating mercuric oxide, HgO:
2 HgO(s) ⟶ 2 Hg(l) + O2 (g)
(a) Outline the steps necessary to answer the following question: What volume of O2 at 23 °C and 0.975 atm is produced by the decomposition of 5.36 g of HgO?
(b) Answer the question.
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