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amoong

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  1. Question: A sample of a compound of N and O reacts with excess H2 (g) to give 0.123g of NH3 and 0.325g of H2O. Determine the empirical formula of this compound. Been trying to solve it for a few days. My chem teacher wants the class (Grade 11 chem) to solve the questions on our own for prep for the unit test but no one else knows how to do this. I tried finding % composition to get to Empirical Formula but I got nowhere with it. I also tried doing mole ratios but I font have molecular mass of the unknown compound to find the mass of it. I think I need to get the balanced chemical equation but I don't know how to. Can anyone help me? Any hints? or where to start.
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