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hengping

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ljj-21yd

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hengping(金币+2): 2011-10-18 21:49:06
酸肯定能溶解的,只是你条件不够。可以加热延长时间啊
在科学的海洋里,寻找志同道合的伙伴,共同探索过去的不可能
3楼2011-10-18 10:39:22
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ck569385001

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hengping(金币+2): 2011-10-17 21:53:35
加入硝酸,一般用稀的就可以,如果不行就用浓的,先在加热状态下回流30分钟,然后在通风厨中把酸蒸干,然后加水定容就可以测了。
hehe
2楼2011-10-17 20:03:40
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