A 525-mL sample of unknown HCl solution reacts completely with Na2CO3 to form 20.1 g CO2. What was the concentration of the HCl solution

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A 651-mL sample of unknown HClHCl solution reacts completely with Na2CO3Na2CO3 to form 12.1 g of CO2CO2. What was the concentration of the HClHCl solution? ...

Missing: 525- ‎| Must include: 525-