gas stoiciometry...need balanced euqations...help?...explain how you got the balanced euqations?

Question

can someone give me the balanced equations.... and i'll do the math...
1. the first step in the industrial manufacture of sulfuric acid is the complete combustion of octasulfur. What mass of octasulfure is erquired to produce 112 L of sulfur dioxide at STP?

2. Coal can undergo an incomplete combustion in the absnece of a plentiful supply of air to produce deadly carbon monixde gas.

3. ammonia reacts with sulfuric acid produces ammonium sulfate

Answer 1

1. S8 + 12O2 ===> 8SO3 (Actually, the S8 is combusted to SO2, which is passed with more O2 over a V2O3 catalyst to get SO3.)

2. 2C + O2 ===> 2CO

3. 2NH3 + H2SO4 ===> (NH4)2SO4