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What happens to the asthenosphere as the crust moves away from each other? I need help with the following kinetics problems, please explain/show work!? Let y'''- 7 y''+12 y'=0. Find all values of r such that y = e^{rx}? A student prepares 31.7 mL of 6.37 M KBr(aq) solution. How many mols of KBr are in solution? How to solve the following expression algebraically: (x+y)^-2 = x^-2(1+y/x)^-2 Thanks.?