题目

通常人们把拆开1 mol 某化学键所吸收的能量看成该化学键的键能。键能的大小可用于估算化学反应的反应热(ΔH),化学反应的ΔH等于反应中断裂旧化学键的键能之和与反应中形成新化学键的键能之和的差。 化学键A—AB—BA—B 键能/(kJ·mol-1)436243431 则下列热化学方程式错误的是( ) A.A2(g)+B2(g)AB(g) ΔH=-91.5 kJ·mol-1 B.A2(g)+B2(g)2AB(g) ΔH=-183 kJ·mol-1 C.A2(g)+B2AB(g) ΔH=+91.5 kJ·mol-1 D.2AB(g)A2(g)+B2(g) ΔH=+183 kJ·mol-119．I used to have a very bad habit of shouting at my kids．I knew I need to stop，but counting to 10 and taking deep breaths never worked for me．I needed to find some kind of strategy that would （61）actually（actual ） work．I decide that the first step was to talk to my kids and tell（62）them that I wanted to change this habit．I promised them that if I ever shouted，I would apologize．I didn't like to apologize，so this was（63）areal important thing for me．Then I began to check myself．I noticed that I was short of patience （64）when/while/ifI was tired at the end of the day and was65）nervous （nerve） about activities．Knowing I was less patient at some times than others（66）made（make） me realize that often it was not their behavior （67）thatcaused me to lose my temple，but my own problem．I didn't bear （68）complaining（complain） or being uncooperative．However，I still created a mantra，（69）whichhelped me to learn more about the situation and deal with it （70）froma better angle-"My children are not being a problem； my children are having a problem．"