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please answer fast please experts explain how to get this answer 15. The equation showing the reaction of hydrogen with oxygen to form water is given below : 2H2 + 02 21120 (a) V%at is the ratio of reactant molecules hydrogen and oxygen of the reaction ? (b) Suppose 32 g oxygen and 10 g of hydrogen are allowed to react logether. (i) How many molecules of water will be formed ? (ii) Which reactant will be left behind after the reaction ? How many moles ?