A generic antacid contains sodium bicarbonate, NaHCO3, as its active ingredient. A student added a 2.000 g sample of the antacid to a beaker that contained 20 mL of 5% vinegar and 15 mL of water. Before the antacid sample was added to the beaker, the mass of the beaker with the water and vinegar solution was 229.120 g. When the reaction was complete, the mass of the beaker and its contents was 230.530 g. How many grams of carbon dioxide gas were produced in the reaction?

mass of CO2: g

How many grams of NaHCO3 were in the sample of the antacid? Assume NaHCO3 was the limiting reactant in the reaction. The molar mass of CO2 is 44.009 g/mol and the molar mass of NaHCO3 is 84.006 g/mol.

mass of NaHCO3: g

What was the mass percent (% /) of NaHCO3 in the 2.000 g antacid sample? % /=