Question

here is the chemical structure of butanal: ch₃ - ch₂ - ch₂ - c(=o) - h decide whether each molecule in the table below is another molecule of butanal, a molecule of an isomer of butanal, or a molecule of an entirely different compound. molecule relationship to butanal h h h h h - c - c - c - c - h h h h h select ch₃ - ch₂ - ch=ch - oh select ch₃ - ch₂ - c(=o) - h select

Explanation:

Step1: Recall isomer definition

Isomers have same molecular formula but different structures. Butanal has formula $C_4H_8O$.

Step2: Analyze first molecule

The first molecule has same atoms and connectivity as butanal, so it is another molecule of butanal.

Step3: Analyze second molecule

The second molecule $CH_3 - CH_2 - CH=CH - OH$ has molecular formula $C_4H_8O$ but different structure, so it is an isomer of butanal.

Step4: Analyze third molecule

The third molecule has 3 - carbon chain instead of 4 - carbon chain in butanal and is propanal, so it is a different compound.

Answer:

Another molecule of butanal
An isomer of butanal
A different compound