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.
I believe that you’d be able to sit upon pillows
Answer:
No, he didn't.
Explanation:
To put in a little bit of context, Euclid was known for Compiling the works of previous mathematicians and gather it into series of books that he published. With the hope that future generations could get a head start in mathematics without having to redo all the researches from the start.
But, he mentioned that he didn't recorded all mathematical discoveries because of these two reasons:
1. He publicly stated that all discoveries should be proven with scientific methods. This concept hasn't been generally accepted by the people in his time, even among the sciences community. There are several occurrences where theories are written without having sufficient evidence and only rely on deities. He eliminated such theories from his collection.
2. Unlike today, it is extremely hard for mathematicians to gained recognition. There were many brilliant people who made discoveries at that time, but not all of them are recognized by the mass. Making their discoveries left uncovered as they met their death.
The higher the altitude the lower the temperature, and the lower the altitude the higher temperature
Answer:
hello there, the statement is true.