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I think that should be 2N2O4+2H2O+O2 --> 4HNO3

But i'm not sure

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13y ago

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The acid-base reaction between nitric acid (HNO3) and sodium hydroxide (NaOH) produces sodium nitrate (NaNO3) and water (H2O). The balanced chemical equation for this reaction is: HNO3 + NaOH → NaNO3 + H2O.