Which of the following is a combustion reaction?
a 2h2o 2h2 + o2
b 2agno3 + h2s yields ag2s + 2nho3
c ch4 + 2o2 yields co2 + 2h2o
d 2al + n2 yields 2aln

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?