Answer:
d. 3 signals: a singlet, a doublet, and a septet
Explanation:
In this case, we can start with the structure of
. When we draw the molecule we will obtain <u>2-methoxypropane</u> (see figure 1).
In 2-methoxypropane we will have three signals. The signal for the
groups in the left, the
and the
in the right. Lets analyse each one:
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in the right
In this carbon, we dont have any hydrogen as neighbors. Therfore we will have <u>singlet</u> signal in this carbon.
-)
In this case, we have 6 hydrogen neighbors ( the two methyl groups in the left). So, if we follow the <u>n + 1 rule</u> (where n is the amount of hydrogen neighbors):
For this carbon we will have a <u>septet</u>.
-)
in the left
In this case we have only 1 hydrogen neighbor (the hydrogen in
). So, if we use the n+1 rule we will have:
We will have a doublet
With all this in mind the answer would be:
<u>d. 3 signals: a singlet, a doublet, and a septet
</u>
<u />
See figure 2 to further explanations
In order to preserve substance, we must create a low temperature environment. In order to do this, we must remove the heat energy in the environment via reactions that will absorb heat energy. These are endothermic reactions. The answer is C.
When two element combine to form more than one compound i hope this helps you with work have a nice day :)
Answer:
False, the electrons are on the outside protons and neutrons are in the center
Explanation: