Consider the neutralization reaction 2HNO3(aq)+Ba(OH)2(aq)⟶2H2O(l)+Ba(NO3)2(aq)2HNO3(aq)+Ba(OH)2(aq)⟶2H2O(l)+Ba(NO3)2(aq) A 0.125 L0.125 L sample of an unknown HNO3HNO3 solution required 54.3 mL54.3 mL of 0.200 M Ba(OH)20.200 M Ba(OH)2 for complete neutralization. What is the concentration of the HNO3HNO3 solution?

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