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Pka=4.74 是几位有效数字？

2025-03-30 22:56:25

推荐回答（2个）

回答1：

我们需要判断Pka=4.74是几位有效数字
已知Pka的值为：4.74
将小数部分去掉，得到整数部分：4
将整数部分去掉，得到小数部分：0.74
将数字转化为字符串，得到其长度：4
有效数字的个数为：总数字长度 - (指数部分的长度 + 小数部分的长度) = 4 - (2 + 1) = 1
所以，Pka=4.74是1位有效数字

回答2：

3位啊

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