How many grams of carbon dioxide are formed as the solution fizzes?

if 2.57g of the citric acid (C6H8O7, MW=192g/mol) reacts with the excess sodium bicarbonate (NaHCO3), how many grams of CO2 (MW=44g/mol)....? background info: antacids such as alka-seltzer, use the reaction of sodium bicarbonate with citric acid in water solution to produce a fizz as follows: 3NaHCO3+C6H8O7---> 3CO2+3H2O+Na3C6H5O7.