The first step in the Ostwald process for making nitric acid is the formation of NO as follows; 4HN3 + 5O2 makes 4NO + 6 H2O. According to the equation, 5 moles of NH3 will react stoichiometrically with blank moles of O2 to form blank moles of NO. I can't figure out how to fill the blanks!

Question

The first step in the Ostwald process for making nitric acid is the formation of NO as follows; 4HN3 + 5O2 makes 4NO + 6 H2O. According to the equation, 5 moles of NH3 will react stoichiometrically with  blank moles of O2 to form blank moles of NO. I can't figure out how to fill the blanks!

bobpursley · Answer

do it as a proportion: 5/4 =xmolesO2/5= ymolesNO/4