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Hydrochloric acid (HClHCl) reacts with sodium carbonate (Na2CO3Na2CO3), forming sodium chloride (NaClNaCl), water (H2OH2O), and carbon...

Hydrochloric acid (HClHCl) reacts with sodium carbonate (Na2CO3Na2CO3), forming sodium chloride (NaClNaCl), water (H2OH2O), and carbon dioxide (CO2CO2). This equation is balanced as written: 2HCl(aq)+Na2CO3(aq)→2NaCl(aq)+H2O(l)+CO2(g)

A. What volume of 2.50 MM HClHCl in liters is needed to react completely (with nothing left over) with 0.750 LL of 0.400 MM Na2CO3Na2CO3?

Express your answer to three significant figures and include the appropriate units.

B. A 675-mLmL sample of unknown HClHCl solution reacts completely with Na2CO3Na2CO3 to form 11.1 gg CO2CO2. What was the concentration of the HClHCl solution?

Express your answer to three significant figures and include the appropriate units.

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