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1. nh3 + o2 → no + h2o
n2 + h2o → nh3 + no
nh3 + o2 - n2 + h2o
nh3 + o2 hno3 + h2o
nh4+ + oh- → nh3 + h2o
nh3 + no - n2 + h2o
nh3 + o2
nh4no3 n2 + o2 + h2o
n2+h2o nh3+o2
nh3+oh nh2+h2o
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