國二理化題目敎敎我><~~~ - 生活
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By George
at 2014-07-03T00:00
at 2014-07-03T00:00
Table of Contents
()1.在25度C下,某燒杯內裝有濃度為0.01M的NaOH溶液後燒杯內剩餘溶液的pH值為多少?(A)0.01(B)2(C)3(D)12()2.下列項目中,在化學反應前後一定不變的有哪些?(a)原子數目(b)分子數目(c)原子排列方式(d)質量總和(e)原子種類(f)均衡係數總和()3.蠟燭在空氣中燃燒後,會產生水及二氧化碳。若蠟燭於空氣中燃燒後減輕a公克,��
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By Freda
at 2014-07-05T19:55
at 2014-07-05T19:55
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By Edwina
at 2014-07-06T14:29
at 2014-07-06T14:29
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