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5) [A marks] A 0.7128gram sample of NajCO,nH/ N was dissolved in enoueh water to make 250.0mL of solution. A.20.00-mL aliquot was taken and 15.00mL

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5) [A marks] A 0.7128gram sample of NajCO,nH/ N was dissolved in enoueh water to make 250.0mL of solution. A.20.00-mL aliquot was taken and 15.00mL of 0.2184M HCl added: Na2CO2nHH2O(aq)+2HCl(aq)2NaCl2)+CO2(m)+(n+1MH2O(l) The excess HCl required 25.27mL of 0.1128MNaOH to neutralize: NaOH(aq)+HCl(aq)NaCl(aq)+H2O(b) What is the value of n in the formula Na2CO3nH2O3

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