NEED HELP ASAPPP!! (If you could show any work that was needed for the problems that would be greatly appreciated)

11. Methane and sulfur react to produce carbon disulfide (CS2), a liquid
often used in the production of cellophane.
___CH4(g) + __Ss(S) CS2(l)+ H2S(g)
a. Balance the equation.
b. Calculate the moles of CS2 produced when 1.50 mol S8, is used.
c. How many moles of H2S is produced?
12. Challenge Sulfuric acid (H2SO4) is formed when sulfur dioxide (SO2)
reacts with oxygen and water.
a. Write the balanced chemical equation for the reaction.
b. How many moles of H2SO, is produced from 12.5 moles of SO2?
c. How many moles of O2, are needed?