95%酒精---75%酒精 - 酒精
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By Necoo
at 2005-12-27T00:00
at 2005-12-27T00:00
Table of Contents
請問
我想配75%酒精20L
那我要取95%酒精多少"公升"和"公斤"??
謝謝!!
請幫我列出式子!!!
越易理解越好
謝謝
我想配75%酒精20L
那我要取95%酒精多少"公升"和"公斤"??
謝謝!!
請幫我列出式子!!!
越易理解越好
謝謝
Tags:
酒精
All Comments
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By Joseph
at 2005-12-30T02:23
at 2005-12-30T02:23
(即100公斤的溶液中分別有75和95公斤的酒精)
所以你應該新要知道75%的密度才可以算
相同的你也要知道95%的酒精密度是多少才可以算需要多少公升
一般簡單一些的方式是將2者的密度都當成1(和水一樣)
即計算方式如下
20*0.75=X*0.9 (20公升乘0.75=X公升乘0.9) *表"乘"
即可得X=16.66666(公升)
所以大約需取16.7公升
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By Dora
at 2005-12-28T06:49
at 2005-12-28T06:49
------- x -------
x 20
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