<span>2H2 + O2 → 2H2O</span>
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<span>okay???</span>
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I am so sorry I do not know but I need to answer a question in order to ask one I hope u pass:))
Based on the compounds given, I can say that the substance that is considered essential in the plastic making is NITRIC ACID. This substance is also known as aqua fortis and spirit of niter wherein this decomposes into oxides of nitrogen and water. The answer would be the last option. Hope this helps.
