Baking Soda (NaHCO₃, 84 $\rightarrow$ H₂O + CO₂ + NaB
A) 0

Baking soda (NaHCO₃, 84.0 g/mol) requires acids from other ingredients to generate the carbon dioxide needed to make bread rise. The following equation describes this reaction, where HB is some unspecified acid. If 20.4 g of baking soda are used in a recipe and enough acid is present for a complete reaction, how many moles of carbon dioxide are generated?
HB + NaHCO₃ $\rightarrow$ H₂O + CO₂ + NaB

A) 0.464 mol
B) 0.334 mol
C) 0.243 mol
D) 0.204 mol
E) 0.232 mol