【简答题】A为紫黑色晶体,B为白色固体,C、D都为黑色固体,将A与B混合或B与C混合,加热时都有无色气体M产生。加热B、C混合物与只加热B产生M的速率相比,前者比后者快得多,且反应前后C的质量和化学性质都不变。只加热A时,除产生气体M外还有C产生。D在M中剧烈燃烧,发出白光,生成无色气体E,E能使澄清的石灰水变浑浊。根据以上事实推断A、B、C、D、E、M各是什么物质,写出各物质的化学式。 A B C D E...
【简答题】Compare each pair of words and complete the following sentences with the right one. reading, readable The words and numbers in the table should be clearly(1). I haven't had time to do much (2)lately.