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16/05/2022 · 【教师补充】nh4cl、(nh4)2so4也属于离子化学物。 【教师总结】离子化合物存在于：(1)活泼金属(指第一和第二主族的金属元素)与活泼的非金属元素(指第六和第七主族的元素)间形成的化合物。
17/05/2022 · 中国大学mooc(慕课)综合英语c章节测试期末考试答案. a. ad-1的位置实现的转化明细数最多，点击量最高. ad-2的位置实现的转化量次之，但与ad-3相比，点击量远高于ad-3，再对比二者的转化明细数，不难发现ad-3的位置所带来的转化好于ad-2。
17/05/2022 · NH 4 Cl, (NH 4) 2 SO 4, (NH 4) 2 CO 3, CH 3 COONH 4 solutions with a molar concentration of 0.9 mol/L are chosen to test the feasibility of the microfluidic chip for measuring liquid samples, the...
17/05/2022 · Solution (100 ml) of (NH 4) 2 SO 4 (0.2 and 0.4 mg N for low and high N contents, respectively) was transferred to a 250-ml beaker, and 10 mg sodium sulfate (Na 2 SO 4) (1 ml of 10 g Na 2 SO 4 L −1 solution) was added to the beaker as a bulking agent to make sure sufficient amount of salt recovered after evaporation.
16/05/2022 · c＝0.5x得出y＝2b－4c所以就能得出D答案了．设原有xmol(NH4)2SO4,得此份溶液中NH4 和OH-相等,c＝0.5x得出y＝2b－4c所以就能得出D答案了．AD注意问题：所以要在最后的结果上*2bmol烧碱对应bmol铵根,
17/05/2022 · 20.氨气与硫酸的反应2nh3+h2so4==== (nh4)2so4. 21.氨气与强酸的离子的反应nh3+h+==== nh4+ 22.氨的催化氧化的反应4nh3+5o2===== 4no+6h2o. 23.碳酸氢铵加热的反应nh4hco3==== nh3↑+co2↑+h2o. 24.氯化铵加热的反应nh4cl==== nh3↑+hcl↑. 25.碳酸铵加热的反应(nh4)2co3==== 2nh3↑+co2↑+h2o
16/05/2022 · c＝0.5x得出y＝2b－4c所以就能得出D答案了．设原有xmol(NH4)2SO4,得此份溶液中NH4 和OH-相等,c＝0.5x得出y＝2b－4c所以就能得出D答案了．AD注意问题：所以要在最后的结果上*2bmol烧碱对应bmol铵根,
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