Problem: How many grams of Na2CO3 are present in 12.4 mL of a solution that is 39.0% Na2CO3, by mass. The density of the solution is 1.19 g/mL. 

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How many grams of Na2CO3 are present in 12.4 mL of a solution that is 39.0% Na2CO3, by mass. The density of the solution is 1.19 g/mL. 

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