calculate the theoretical mass (g) of hydorgen chloride formed in the reaction of sulfuric acid (2.00 mol) with sodium chloride (150g)

2NaCl(s) + H2SO4(aq) = 2HCl (g) + NaSo4(S)

Here is a worked example of stoichiometry problem. Just follow the steps.

http://www.jiskha.com/science/chemistry/stoichiometry.html