题目

The children have          homework to do every day. A. many too      B. too many      C. much too      D. too much 答案：D(1)等质量的CO和SO2分别装入同温同体积的容器，所含分子数之比 ，所含氧原子之比 ，密度之比 ，压强之比 。(2)将标准状况下224L的HCl溶于1000g水配成密度为1.23g/cm3溶液，所得溶液的物质的量浓度为_______ molL-1