【简答题】一次趣味化学活动中,王老师向同学们展示了一瓶标签受损的无色溶液,如图所示.要求同学们进行探究:确认这瓶溶液究竟是什么溶液? 【提出猜想】王老师提示:这瓶无色溶液只能是下面四种溶液中的一种: ①硫酸镁溶液②硫酸钠溶液③硫酸溶液④硫酸铵溶液 【查阅资料】(1)常温下,相关物质的溶解度如下: 物质 MgSO 4 Na 2 SO 4 (NH 4 ) 2 SO 4 H 2 SO 4 溶解度 35.1g 19...
【单选题】Inspecting a Used Car The scariest part of buying a used ear is not being completely sure of what condition it’s in. A car that’s been in a major accident is always a bigger risk,but sellers often try...