题干
China is famous the Great Wall.
A：at
B：for
C：as
答案(点此获取答案解析）
B
China is famous the Great Wall.
A：at
B：for
C：as
PCl5。各物质均为气态。达平衡后，PCl5为0.4mol。若此时再移走1mol PCl3和0.5mol Cl2，相同温度下达到平衡，PCl5的物质的量为（ ）
