Question

What mass of oxygen gas is consumed by the reaction of of ammonia

Answer 1

NH3 + O2 = NO + H2O 

1. Balance the equation: 

4 NH3 + 5O2 = 4 NO + 6H2O 

2. Once balanced, determine the moles: 

NH3 = 4 
O2 = 5 
NO = 4 
H2O = 6 

3. Stoichiometry: 

19 g NH3 * 1 mol NH3/ 17 g (atomic mass) NH3 * 5 mol O2 / 4 mol NH3 * 32 g O2/1 Mol O2 = 

3040/68 = 44.70 g O2