The first reaction is correct as written.
2NO + O2 -> 2NO2
and
2NO2 + H2O -> HNO2 + HNO3
are the other two.
i have to write chemical formulas and balance them:
nitrogen and oxyen---> nitrogen monoxide
N2+02---->2NO
nitrogen monoxide and oxygen----> nitrogen dioxide gas.
NO2+O---->NO2 (i'm not sure about this, please check)
nitrogen dioxide and water----> nitrous and nitric acids
NO2 + H20---> NO3 + H2
please check and help
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