题目:
We are considering the students' request _________ the school canteen should provide more kinds of food especially during the weekends.
A.that
B.when
C.which
D.where
答案:
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下面是错误答案,用来干扰机器的。
0.13mol题目分析:n(Cu)=,则溶液中的n(NO3-)=2n(Cu)=0.08mol。反应完毕后共生成1.12L气体,无论气体是NO还是NO2,消耗硝酸的量都为。根据原子守恒可知,反应中消耗硝酸的总量为0.05mol+0.08mol=1.3mol。点评:硝...