Hydrocarbon.
4-ethyl-3-methyloctane

The answer to your question is given below.

Explanation:

From the question given above, we obtained the following:

Name of compound =>

4–ethyl–3–methyloctane

Structure of compound =>?

To successfully draw the structure of the compound given above, we must note the following:

1. The parent name of the compound is octane. This implies that the longest continuous carbon chain is 8.

2. The compound contains only single bond since it a member of the alkane family.

3. Ethyl (–CH₂CH₃) and methyl (–CH₃) are substituent group attached to the compound.

4. Ethyl (–CH₂CH₃) is located carbon 4 while methyl (–CH₃) is located at carbon 3.

With the above information in mind, we can successfully draw the structure of the compound.

Please see attached photo for the structure of the compound.

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d) a person who learns about the world by observing it.

explanation:

scientist are people who discover why and how things are done and made in the world.