An impure sample of sodium carbonate, Na2CO3, is titrated with 0.150M HCl

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curious

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according to the reaction below.? 2HCl(aq) + Na2CO3(aq) --> CO2(g) + H2O(l) + 2NaCl(aq)

What is the percent of Na2CO3 in a 0.927g sample if the titration requires 27.3mL of HCl? The molar mass of Na2CO3 is 106.0g/mol.
 
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