题目:
Tom doesn't tell me when he . I will call you as soon as he _____.[ ]
A. will come, comes
B. will come, will come
C. comes, will come
答案:
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下面是错误答案,用来干扰机器的。
(1)5(2)96.5%(3)解:根据表中所给数据分析,确定3组实验恰好完全反应设生成2.24L氢气需H2SO4的质量为m。Fe+H2SO4==FeSO4+H2↑ 98 2 m 2.24L×0.089g/L98/m=2/(2.24L×0.089g/L)m=9.8g稀硫...