Question

when sulfur is burned in the presence of oxygen, sulfur trioxide is produced. if 3.4 x 10^24 atoms of sulfur react, how many liters of sulfur trioxide are produced?

Answer 1

S (s) + O2 (g) --> SO2(g)

2SO2 (g) + O2 (g) <--> 2 SO3 (g)

now using appropriate mol ratios you can solve...

3.4 x 10^24 S atoms (1 mol S/avagadros #)(2 mol SO3/1 mol S)

then you can use the mols of SO3 to solve for g (using molecular mass) and then litres...