The population of Shandong _______very large. A. are B. has C.is D.have 答案:C10.在一定温度下,CO和CH4燃烧的热化学方程式分别为2CO(g)+O2(g)═2CO2(g)△H=-566kJ/molCH4(g)+2O2(g)═CO2(g)+2H2O(l)△H=-890kJ/mol2molCO和2mol CH4组成的混合气体,在相同条件下完全燃烧时,释放的热量为( )A.2022 kJB.2670 kJC.1698kJD.2346 kJ