The molar mass of HgO is 216.59 g/mol. The molar mass of O2 is 32.00 g/mol. How many moles of HgO are needed to produce 250.0 g of O2?
Question
Answer:
A reaction in which Oxygen (O₂) is produced from Mercury Oxide (HgO) would be a decomposition reaction. 2HgO → 2Hg + O₂If 250g of O₂ is needed to be produced,then the moles of oxygen needed to be produced = 250g ÷ 32 g/mol = 7.8125 molNow, the mole ratio of Oxygen to Mercury Oxide is 1 : 2∴ if the moles of oxygen = 7.8125 molthen the moles of mercury oxide = 7.8125 mol × 2 = 15.625 molThus the number moles of HgO needed to produce 250.0 g of O₂ is 15.625 mol
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algebra
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