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Always white sometime brown, builds your bones when it goes down whats the answer of this question? You are given a 0.73 M solution of an unknown acid, HA. This solution has a pH of 3.42. Calculate the Ka value for this acid.? Xy squared + 2x = 4 how to solve and no if its symmetry or no? Thank you!? A tank is a vertical cylinder with inside diameter of 6ft and a height of 15ft.? How to calculate inertia of a machine if we have only rotor and stator slot information ?