(1). If 0.2 g of sodium oxalate (Na2C2O4) is dissolved in 1.0 L of water, the...

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(1). If 0.2 g of sodium oxalate (Na₂C₂O₄) is dissolved in 1.0 L of water, the hydroxide ion concentration in the resulting solution is ___ x10^-7 M.

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