题目

lmol碳完全燃烧后可放出393.5KJ的热量，下列热化学方程式正确的是（    ） A. C(s)+O2(g)=CO2(g) △H=+393.5kJ/mol B. C(s)+O2(g)=CO(g) △H＝﹣393.5kJ/mol C. C+O2=CO2△H＝﹣393.5kJ/mol D. C(s)+O2(g)=CO2(g) △H＝﹣393.5kJ/mol 答案：D22. Let’s ______my scientific knowledge and your business skills and start a company.A．connectB．relateC．combineD．Put