题目

What our school ________ is that more than 60% of the students can enter the famous universities every year. A . is tired of B . takes proud in C . is proud of D . is short of 答案:C在一密闭容器中,反应mA(g)+nB(g)?pC(g),达到平衡时,测得c(A)为0.5mol/L;在温度不变的条件下,将容器体积扩大一倍,当达到平衡时,测得c(A)为0.3mol/L.则下列判断正确的是( )A.化学计量数:m+n>pB.平衡向正反应方向移动C.物质B的转化率增大D.物质C的质量分数增加
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