摘要:4.在2CH4(g) + 2NH3(g) + 3O2(g) 2HCN(g) + 6H2O(g)反应中.已知v .且v(O2) = m mol/则m与n的关系正确的是[ ] A.m =n B.m =n C.m =n D.m = 2n

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