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The first step in the production of nickel from its ore, NiS, is to roast it in the presence of oxygen to form the metal oxide and SO2. What is the coefficient of oxygen when the equation for this reaction is completed and balanced?

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The first step in the production of nickel from its ore, NiS, is to roast it in the presence of oxygen to form the metal oxide and SO<sub>2</sub>. What is the coefficient of oxygen when the equation for this reaction is completed and balanced?






 
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