(Answered) A sample of a substance containing only c h and n is burned

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A sample of a substance (containing only C, H, and N) is burned in oxygen.

8.696 g of CO₂, 2.225 g of H₂O and 4.446 g of NO are the sole products of combustion.

What is the empirical formula of the compound?

How can I find the empirical formula if they do not give me the mass of the compound in order to find out how much oxygen is present?

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