题干
----I’d like to take a week’s holiday.
----______; we are too busy.
A：Don’t worry
B：Forget it
C：Don’t mention it
D：Pardon me
答案(点此获取答案解析）
B
A：Don’t worry
B：Forget it
C：Don’t mention it
D：Pardon me
CO2(g)+H2(g)，达到平衡时测得CO2为0.4mol。此时抽出CO和H2O（g）各0.5mol，达到新平衡后，CO2的物质的量为( )