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碱金属在教材上所占的篇幅较少,但有关的计算却较多,特别是有的题目需要一定的数学技巧,现将其典型计算举例如下.例1碱金属溶于汞中可以形成良好的还原剂“汞齐”.取某种碱金属的“汞齐”7g与水作用得到2.24L氢气(标况下)并得到密度
Alkali metal accounts for less space in teaching materials, but there are more calculations involved, and in particular some topics require certain mathematical skills. The typical calculations are as follows. Example 1 Alkali metals dissolved in mercury can form good Reducing agent “Amalgam”. Take an alkali metal “Amalgam” 7g and water to get 2.24L hydrogen (under standard conditions) and get the density