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# No(g)+o3(g)=no2(g)+o2(g) h1=-198.9kj. 3/2o2(g)=o3(g) h2=142.3kj. o(g)=1/2o2(g) h3-247.5kj Answers: 1  ### Another question on Chemistry Chemistry, 22.06.2019 08:30
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No(g)+o3(g)=no2(g)+o2(g) h1=-198.9kj. 3/2o2(g)=o3(g) h2=142.3kj. o(g)=1/2o2(g) h3-247.5kj...
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