!
Two chemistry students are preparing for the “Getting the Volume Right” lab challenge. Their goal is to fill a 1000-mL graduated cylinder with CO2 gas from a chemical reaction. They will react with Na2CO3 with an excess of HCl acid to generate the gas. If the temperature on the day of the contest is 19.4oC and the room pressure is 1007 mbar, how many grams of Na2CO3 must they add to the acid to produce the desired volume of CO2 gas? How many moles of HCl will they need?