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A molecular compound contains 29.27% C, 2.46% H and 68.27% N.

Determine the $C:H:N$ ratio of the subscripts (x, y and z) in the empirical formula: $C_{x}H_{y}N_{z}$.

Mass spectrometry found the molecular mass of the unknown molecule to be 164.128 amu.

Determine the $C:H:N$ ratio of the subscripts (s, t and u) in the molecular formula: $C_{s}H_{t}N_{u}$.

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