PLEASE HELP 10.0g of solid sodium carbonate and excess of aqueous acetic acid react to produce sodium acetate, carbon dioxide, and water. When the reaction is complete, 1.98 L of CO2 at STP conditions were produced.

Na2CO3(s) +
2 HC2H3O2(aq) à
2 NaC2H3O2(aq) + CO2(g) + H2O(l)

a) Calculate the maximum amount of carbon dioxide that could had been made under these conditions.

b) Calculate the % yield for the reaction.