When 10.0 g of sulfur is combined with 10.0 g of oxygen, 20.0 g of sulfur dioxide is formed. What mass of oxygen would be required to convert 10.0 g of sulfur into sulfur trioxide?
A)5.0 g
B)10 g
C)15 g
D)30 g
E)20 g

Question

Quizplus · Accepted Answer

To form sulfur trioxide (SO3) from sulfur (S), the reaction is 2S + 3O2 -> 2SO3. For 10.0 g of sulfur (0.3125 mol), 0.46875 mol of O2 is needed, which is 15.0 g of oxygen.

When 100 G of Sulfur Is Combined with 10