Problem page ammonia nh3 chemically reacts with oxygen gas o2 to produce nitric oxide no and water h2o. what mass of oxygen gas is consumed by the reaction of 6.3g of ammonia?

The mass of oxygen consumed is calculate as follows

write the equation for reaction

4NH3 + 5O2 = 4NO + 6H2O

calculate the moles of ammonia = mass/molar mass

= 6.3 g / 17 g/mol = 0.37moles

by use of mole ratio between NH3 to O2 which is 4:5 the moles of O2 is therefore = 0.37 x5/4 = 0.463 moles

mass of O2 consumed is therefore = moles xmolar mass

= 0.463 moles x 32 g/mol = 14.82 grams