- CH2CHNH^- lewis structure?

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How manually divide 109 by 10? Heat of combustion of a compound is -1390.0 kJ and its molar mass is 77.35 g/mol, how many g of it must burn to release 114.10 kJ of heat? What the relationship between work done and change in kinetic energy of an object? Explain.? Write a problem where the negative square root is not an integer. then graph the square root via online? Solve for x
a) 81^4-2x =729 b)8^3x-2=16^2x+1?

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