题目内容
在一定温度下将1 mol CO和1 mol水蒸气放入一固定容积的密闭容器中，反应CO(g)＋H 2O(g) 
CO 2(g)＋H 2(g)达平衡后，得到0.6 mol CO 2；再通入0.3 mol水蒸气，达到新平衡状态后，CO 2的物质的量可能是( )
2021-09-18
A.0.9 mol
B.0.8 mol
C.0.7 mol
D.0.6 mol
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