請問七題高中的化學計算題問題 - 生活
By Sandy
at 2012-05-08T00:00
at 2012-05-08T00:00
Table of Contents
怎麼算都算不出來請化學達人幫幫忙阿要詳解喔!謝謝!第一題0.01mole的PCl5溶於水配成100ml的水溶液取出其中25ml請問這個25ml可以和多少毫升的0.1M氫氧化鈉反應?第二題0.8克的細沙和過量的HF加熱至100度C反應後重量減至0.2克請問細沙中含矽的重量百分率為多少?Si=28第三題一杯PH=1的HCl要將它變成PH=2的溶液小名
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at 2012-05-10T10:18
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