Answer :
(1) The correct option is, 2-ethylpentane
(2) The correct option is, 2,3-dimethylpentane
(3) The correct option is, 2-methyl-2-butene
(4) The correct option is, 7-ethyl-4-dodyne
(5) The correct option is, pentanoic acid
Explanation :
The basic rules for the naming of organic compounds are :
- First select the longest possible carbon chain.
- The longest possible carbon chain should include the carbons of double or triple bonds.
- The naming of alkane is done by adding the suffix -ane, alkene by adding the suffix -ene, alkyne by adding the suffix -yne and carboxylic acid by adding the suffix -oic acid.
- The numbering is done in such a way that first carbon of double or triple bond gets the lowest number.
- The carbon atoms of the double or triple bond get the preference over the other substituents present in the parent chain.
- If two or more similar alkyl groups are present in a compound, the words di-, tri-, tetra- and so on are used to specify the number of times of the alkyl groups in the chain.
Hey there!
A phase change is an example of a physical change.
This is because no new substance is formed. Physical changes affect the form of a substance, and can usually be reversed.
In a chemical change, the substance is changed and one or more new substances are formed.
Hope this helps!
An atom's mass number is the sum of the numbers of protons and neutrons in its nucleus. The atomic weight is the average mass of all of the isotopes of that element.
Photosynthesis is the process by which plants create their food. It involves the operation of enzymes in the plant cells , and they work best at certainpH levels. ... Thus, as the plant's pH drifts away from the best pH, the rate of photosynthesis will decrease.
Answer:
a. The number of neutrons in the nucleus
Explanation:
Having more protons or electrons would change the charge of the atom making it an ion. Neutrons have no charge so the overall charge of the atom is not affected; neutrons also have a relative mass of 1 which is why there are different isotopes.
Hope this helps!