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What volume of oxygen gas is produced when 54.7g of mercury(II) oxide reacts completely according to the following reaction at 25C and 1 atm? mercury(II)oxide(s)mercury(l)+oxygen(g) Volume = What volume of hydrogen gas is produced when 95.6g of sodium reacts completely according to the following reactior at 25C and 1atm ? sodium(s)+water(l)sodiumhydroxide(aq)+hydrogen(g) Volume =