Question

answer the questions in the table below about this molecule: what is this molecules chemical formula? note: write the simplest molecular chemical formula, in which each element symbol appears only once. how many ch₃, ch₂, and ch groups are in this molecule?

Explanation:

Step1: Count atoms for chemical formula

The molecule has 5 carbon (C) atoms, 10 hydrogen (H) atoms and 1 oxygen (O) atom. So the chemical formula is $C_5H_{10}O$.

Step2: Identify $CH_3$, $CH_2$ and $CH$ groups

• For $CH_3$: There are 2 methyl ($CH_3$) groups. One at the end - terminal and one attached to the central carbon.
• For $CH_2$: There is 1 methylene ($CH_2$) group.
• For $CH$: There are 2 methine ($CH$) groups, one in the double - bond and one in the branched structure.

Answer:

What is this molecule's chemical formula? $C_5H_{10}O$
How many $CH_3$, $CH_2$, and $CH$ groups are in this molecule? 2 $CH_3$, 1 $CH_2$, 2 $CH$