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woyaoce
1 天
送检企业 宝美施***限公司
用USP1601的方法做雾化器粒径检测分析 山东某单位做产品出口 产品名称 丙二酸单乙酯钾盐 性状 百色结晶粉末。 指标:含量98.5%min 双钾盐 1%max 液相色谱分析 ...
kinhtedothi
3 天
Hai việc lớn Hà Nội cần phải làm ngay cho vấn đề môi trường
Ô nhiễm không khí không phải là vấn đề mới đối với Hà Nội nhưng dường như các giải pháp để cải thiện vẫn đang như “muối bỏ ...
华夏热点网
6 天
氯化铵水解反应方程式(氯化铵水解)
NH4++OH-=NH3·H2O,使氢氧化镁溶解平衡不断向右移动而溶解的。 2、那么哪种解释是正确的呢?我们知道,在浓氯化铵溶液中,铵根离子浓度很大的(氯化铵是可溶强电解质),氢离子浓度则很小(铵根离子水解程度小,溶液越浓,更不利于水解),所以第二个 ...
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