在反应A+3B=2C+3D中,已知2.3gA跟4.8gB恰好完全反应,生成4.4 发布时间:2017-06-28 13:30 │ 来源:www.tikuol.com 题型:问答题 问题: 在反应A+3B=2C+3D中,已知2.3gA跟4.8gB恰好完全反应,生成4.4gC,又知D的相对分子质量为18,则A的相对分子质量为多少?
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题型:问答题 It is difficult for children to change their eating habit later in life. _____,parents should encourage healthy eating from an early age.A.Otherwise B.Therefore C.Besides D.However 查看答案