化學實驗題目幫忙解答一下(20點) - 生活
By Emily
at 2009-09-25T00:00
at 2009-09-25T00:00
Table of Contents
請幫忙一下解答這些題目,我想要有詳細的解釋和計算過程,感謝各位大大的幫忙。1.用排水法測量硬幣值量,如何分辨金屬是純金屬還是和金?2.形狀不規則的冰塊與木頭會浮在水上,要如何測量其體積呢?容於水的鹽與糖塊又要如何測體積呢?3.試計算空氣的密度,假設空氣中含有1/5氧氣及4/5氮氣,�
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By Edward Lewis
at 2009-09-27T06:28
at 2009-09-27T06:28
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