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16) A 1.00 g sample of a metal X (X2) was added to 100.0 mL (0.50 M) H2SO4 solution, after reaction, all the excess amount of H2SO4 were back titrated with 33.4 mL (0.5M) of NaOH The atomic weight of the element "X (in g/ mol)" is: 15) For the equilibrium 2A + 3B 2C If the equilibrium concentrations of A, B, and Care 0.024 M, 1x102 M, and 1x102 M respectively, calculate the equilibrium constant (Keq)