Urgent for Chem!

need help in balancing equation for NO2 + O2 -> NO + O3

Please help it may look balance but it is not. This is a tricky one

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  1. I'm sorry but I have to say it IS balanced. The thing is if it wasn't balanced you would have the N's or the O's being different in number from one side or the other.

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  2. Are there 2 N's on the left side of the equation?

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