Day and night is due to the earth rotating. Seasons are due to the earth rotating on a slightly tilted axis, causing light to be shone on different parts of the earth more directly during different parts of the year. Constellations changing throughout the night are because of the earth moving and rotating. Throughout the year, the earth moves, causing us to be facing different directions in different parts of the year. The North Star does't move because it is close to Earth's line of axis, and therefore does not appear to move.
Answer:
3,5-dimethyl-2-octene
Explanation:
Please note that there is no H at carbon 3 less carbon becomes penta hydra.
The compound is:
CH3
I
C = CH2 - CH3
I
CH2
I
CH - CH3
I
CH2
I
CH2
I
CH3
To name the above compound, do the following:
1. Locate the longest continuous chain i.e octene
2. Start counting from the side that gives the double bond the lowest low count since the double bond is the functional group. In doing this, the double bond is at carbon 2.
3. Locate the substituent groups attached and their position in the parent chain. In doing so, you will see that there are two CH3 group attached and they are at carbon 3 and carbon 5. Since the substituents attached are the same, we'll name them as 'dimethyl' indicate that they are two methyl groups
Now, we'll combine the above findings in order to obtain the name. Therefore, the name of the compound is:
3,5-dimethyl-2-octene
Answer: It is important to conduct multiple trials so one can get the best results, additionally, multiple trials with result in minimal errors. Finally it is important to conduct multiple trials because it will show you the actual answer/solution/whatever. If you do something once their may of been a random unknown affect and you would of never knew because you only conducted the experiement once.
Explanation: