How many liters of carbon dioxide gas will be produced from the decompostion of 5.0 grams of sodium hydrogen carbonate? How do I write out equation and solve it

Answer 1

2NaHCO3 ==> H2O + CO2 + Na2CO3

Here is an solved example stoichiometry problem. Just follow the steps.
http://www.jiskha.com/science/chemistry/stoichiometry.html