Answer :
CHO is the one that you need, it is the empirical formula for the isomer compound
The statement, that describe an isomer of a compound with an empirical formula of C₄H₁₀O₃ is "CHO."
What is an empirical formula?
The empirical formula of an organic compounds is the lowest whole number ratio of atoms contained in the substance, as defined in chemistry. The empirical formula gives the minimal ratio of the number of various atoms that existing. It's an empirical formula, if the formula is shortened, whereas not the exact number of atoms in the molecule, The given isomer of a compound is C₄H₁₀O₃. For this isomer, CHO is the empirical formula.
Hence, the correct answer is CHO.
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