The equation representing the reaction used for the commercial preparation of hydrogen cyanide is, 2 CH4 + 3 O2 + 2 NH3 → 2 HCN + 6 H2O Based on the equation,

a. How many moles of O2 are required to react with 2 moles of CH4? __________

b. Write the mole ratio between H2O and CH4.

c. How many moles of HCN will be produced when 4 moles of water are formed? (Use mole ratio as conversions factor.