If dichloromethane is swapped out and ethyl acetate is used in its place, the extracts then obtained would be highly anti-radical and would be more efficient than dichloromethane.
Since "like dissolves like," ethyl acetate is a polar molecule that works well as a solvent to extract the polar caffeine molecules from coffee beans. The ethyl acetate molecules bind to the caffeine molecules, which then move through the bean cells' cell membranes. After all, the ethanol:water (1:1) solvent combination has been demonstrated to be the best for recovering catechins and delivering extracts with the highest antiradical activity.
Dichloromethane is a volatile colourless liquid used as an organic solvent in many industries. One of its main application is that it used to extract caffeine because of its highly effective solvent nature. Because DCM is a non-polar solvent and caffeine is readily soluble in DCM, it can easily be extracted without losing its aroma.
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I believe the answer is: <span>Learned helplessness
</span><span>Learned helplessness refers to the feel of helplesness that created by exposing an individual to a negative situation for a long period of time, to the point where they perceive the negative situation as something that 'normal' or 'supposed to happen'</span>
The answer is less and more (respectively).
To complete the sentence and to get the idea of the phrase:
They became less likely to under-perform on aptitude tests and more likely to become aggressive toward those who had insulted them.
Both China and North Korea still have Communist rulings, therefore both of them are Communist nations.
The correct answer is B: They are both communist nations.
We can also eliminate the other choices.
A: Does not make sense, since North Korea is not even close to being the largest country in East Asia.
C: Both China and North Korea do not have Democratic Constitutions, since they are both Communist Nations.
D: No one from North Korea won the Nobel Peace Prize. I'm not sure about China.
Therefore, the correct answer has to be B.
Hope this answer helped! Have a great day!
No because it's your property, however there would be A LOT of p*ssed off people because of it. You'd probably be all over the news, 'cause you'd have to be really rich to buy it AND then people would harass you about it.
