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1) When hydrogen and oxygen gas combine, water vapor is often the product. If 2.98 L of hydrogen gas at 1.05 atm and 25 degress C combine with the 2.05 L of oxygen gas at 821 mm Hg and 20 degrees C, how many mL of water vapor at STP, could result? 2) 150 g of ice at -12 degress C are added to...