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.
<h3><u>Answer;</u></h3>
Reduces the amount of work needed to move an object.
<h3><u>Explanation;</u></h3>
- <u>A simple machine is any device that reduces human effort to do work. They include, levers, inclined plane, pulleys, etc</u>.
- Simple machines make work easier by multiplying, reducing, or changing the direction of a force and also by changing the distance the force acts through.
- Simple machines cannot change the amount of work done, however, they can reduce the effort force that is required to do the work. This is to mean, machines can neither increase or reduce the energy involved in doing work.
Its either B or D. Because They can both work
Answer: On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet. The magnetic field is extremely important to sustaining life on Earth.
Pretty sure it’s true
not sure what happens in the sky but it comes back down as water again