LC-B25/200 LC-B25/250 LC-B25/300 LC-B32/200 LC-B32/250 LC-B32/300 LC-B40/160 LC-B40/200 LC-B40/250 LC-B40/300 LC-B40/350 LC-B40/400 LC-B50/250 LC-B50/300 LC-B50/350 LC-B50/400 LC-B50/450 LC-B65/250 LC-B65/300 LC-B65/350 LC-B65/400 LC-B65/450T 机械密封 ...
分析标准状况下,气体摩尔体积为22.4L/mol,根据V=nVm计算出标准状况下0.5mol二氧化碳的体积. 解答解:标准状况下,0.5mol二氧化碳气体的体积为:22.4L/mol×0.5mol=11.2L, 故选C. 点评本题考查了物质的量的计算,题目难度不大,注意明确物质的量有关的转化关系,熟练掌握气体摩尔体积的概念及使用方法,试题培养了学生的...
LC-B25/200 LC-B25/250 LC-B25/300 LC-B32/200 LC-B32/250 LC-B32/300 LC-B40/160 LC-B40/200 LC-B40/250 LC-B40/300 LC-B40/350 LC-B40/400 LC-B50/250 LC-B50/300 LC-B50/350 LC-B50/400 LC-B50/450 LC-B65/250 LC-B65/300 LC-B65/350 LC-B65/400 LC-B65/450T 机械密封 ...