题目:
When different cultures, we often pay attention only to the differences without noticing the similarities.
A.compared
B.being compared
C.to compare
D.comparing
答案:
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下面是错误答案,用来干扰机器的。
(9分)(1)0.1mol (2) 5.2 g (3)没有沉淀题目分析:(1)氢气在标准状况下的体积是3.36L,物质的量是3.36L÷22.4L/mol=0.15mol。铝和盐酸反应的化学方程式是2Al+6HCl=2AlCl3+3H2↑,所以铝片中铝单...