As far as I see, is no possibility he will win the tennis match this time. A. it ; that B. there; that C. it ; whether D. there; whether 答案:B18.已知:①2H2O(g)═2H2(g)+O2(g)△H=+483.6KJ/mol②H2S(g)═H2(g)+S(g)△H=+20.1KJ/mol下列判断中正确的是( )A.氢气的燃烧热△H=-241.8KJ/molB.相同条件下,充分燃烧1molH2(g)与1molS(g)的混合物比充分燃烧1mol H2S(g)放热多20.1kJC.由①②知,水的热稳定性小于硫化氢D.②中生成固态硫,△H将增大