Explanation:
The separation technique of benzoic acid from diethyl ether is first the usage of the base and then acid.
As, benzoic acid is soluble in diethyl ether and on adding base, it forms sodium benzoate which is soluble in aqueous layer and thus separates from diethyl ether. Acid is then added to convert sodium benzoate in the aqueous layer back to benzoic acid.
But, in the given question, acid is added first and then base and this went wrong.
The Democratic and the Republican parties are.
Answer:
Olmec civilization began between 1400 and 1200 BCE, according to popular belief. Previous discoveries of Olmec bones ritually deposited at the shrine El Manat near the triple archaeological sites known as San Lorenzo Tenochtitlán pushed the date back to "at least" 1600–1500 BCE.
Explanation:
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Answer:
Invaders forced a huge portion of the population to the south.
Explanation:
During the era of Song Dynasty , Chinese citizens receive series of invasion that came from the Northern part of their country (Historian predicted that these invaders came from modern day' Kazakhstan's territory)
To avoid these invasions, many people at that time moved to the southern part of the country. This caused an increase in the amount of labor force in the southern region, which contribute to the significant growth of the southern region.
