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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Answer:
Suggests that these are substitute goods
Explanation:
Demand cross elasticity measures the percentage change in the quantity demanded of a good given a percentage change in the price of another substitute good. Thus, the calculation of elasticity being 2, suggests that a percentage increase in the price of one store will increase the demand for products of the other store. In other words, a 1% increase in the price of one store will cause consumers to buy two units in the other store, replacing the store product whose price has increased.
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By 2004, when physicians were no longer favored with entry to the US, physicians in the Philippines were retraining as C) computer programmers so they could immigrate to the US.
