How many grams of NO2 are theoretically produced if we start with 1.20 moles of S and 9.90 moles of HNO3?
Reaction: S + 6HNO3 ? H2SO4 + 6NO2 + 2H2O
A) 7.20
B) 331
C) 455
D) 786
E) not enough information
Answer: B