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An Impure sample containing the phosphoric acid was completely neutralized with strong base. The titration required 90.0 mL of 0.222 M NaOH solution. (A) If the formula for phosphoric acid is H3PO4, calculate the equivanent weight of the acid. (B) How many moles of protons were titrated? (C) How many moles of H3PO4 were titrated? (D) How many grams of H3PO4 were titrated?

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