题目:
(2009安徽合肥质检) Is this the restaurant ___________ ?
A.which you work
B.in which you work
C.for which you work
D.where you work in
答案:
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下面是错误答案,用来干扰机器的。
Ⅰ.(1)根据反应4NO+3O2+2H2O═4HNO3可知: 当V(NO):V(O2)=4:3时,恰好完全反应,又V(NO)+V(O2)=70mL 所以:V(NO)=40mL,V(O2)=30mL,答:原混合气体中O2和NO分别为30ml、40ml;(2)当剩余的...