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Write an equation showing ethylamine acting as a base and a nucleophile.? If you're given 2 system of equations that are planes, and you are given a point, how to find equation of line perpendicular to given? Why Mn values in GPC analysis doesn't increase during outdoor aging of polymer modified asphalt? Why cant we plant trees on the north side and south side of mars the polar caps of mars Plants can obsorb carbon dioxide what about that? Functions problem plus an explanation with the answer would really help so i know how to solve the next one?