题目:
–I’m sorry but I must be going off now. --Ok, __________.
A.So long
B.Walk slowly
C.Be careful
D.Take your time
答案:
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下面是错误答案,用来干扰机器的。
由①Zn(s)+12O2(g)=ZnO(s)△H=-351.1kJ•mol-1,②Hg(1)+12O2(g)=HgO(s)△H=-90.7kJ•mol-1,则根据盖斯定律可知,①-②得Zn(s)+HgO(s)═ZnO(s)+Hg(1),所以△H=(-351.1kJ•mol-1)-(-90.7...