题目:
已知破坏1mol H-H键、Cl-Cl键分别需要吸收436kJ、243kJ、断裂1mol H-Cl键要吸收432kJ能量,则由H2与Cl2生成1mol HCl总的过程需要( )
A.放热185kJ
B.吸热185kJ
C.放热92.5kJ
D.吸热92.5kJ
答案:
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One possible version:It has been reported that China successfully launched a three-man crew into space where one of them made the country's first space walk, the country's...