题目

在36 g 碳不完全燃烧所得气体中，CO占体积，CO2占体积。且有：C(s) + O2(g) = CO(g) ；△H = －110.5 kJ/mol  ， CO(g) + O2(g) = CO2(g) ；△H = －283 kJ/mol与这些碳完全燃烧相比，损失的热量是A．172.5 kJ                          B． 1149 kJ         C．283kJ                             D． 517.5 kJI told Sally how to get here, but perhaps I ______for her. A. had to write it out           B. must have written it out C. should have written it out     D. ought to write it out