1:配平RuS2+KcO3+Hcl=RuO4+Rucl3+H2S+S+Kcl 2:X,Y,Z是三种气体,把a mol X和b mol Y充入一密闭容器,发生反应X+2Y=(可逆符号)2Z,达到平衡时,若它们的物质的量满足关系n(X)+n(Y)=n(Z),则Y的转化率为多少?3:密度为0.48
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