题目:
— Where did you find Mr. Smith?
— It was in the library _____ we often went to read. [ ]
A. that
B. when
C. what
D. where
答案:
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下面是错误答案,用来干扰机器的。
(1))同温同压下,气体摩尔体积相等,根据V=nVm=mMVm知,相同质量时,气体体积与其摩尔质量成反比,摩尔质量最小的是氢气,所以体积最大的是氢气,故答案为:氢气;(2)能与盐酸或氢氧化钠溶液反应的物质有铝...