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Sodium monohydrogen phosphate Na2HP04-12H20 (18 g) is dissolved in a mixture of perchloric acid (73 mL, 11.7 F) and water (20 mL). The solution is cooled to -10 OC. Then a solution of sodium molybdate Na2Mo04.2H20 (108 g) in water (200 mL) is added dropwise to the above solution kept at -10 OC. The resulting solutionis pale yellow. ÀïÃæµÄ¡°73 mL, 11.7F" ÊÇʲôÒâ˼£¬FÊÇָʲô£¿Ð»Ð» £¡ |
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ÖìСÃ÷1985
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9Â¥2011-04-06 22:55:00
zhihua123321
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3Â¥2011-04-06 16:53:44
yixinling
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4Â¥2011-04-06 16:57:46
ÖìСÃ÷1985
½ð³æ (СÓÐÃûÆø)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 1282
- É¢½ð: 1
- ºì»¨: 1
- Ìû×Ó: 179
- ÔÚÏß: 139.4Сʱ
- ³æºÅ: 773499
- ×¢²á: 2009-05-18
- ÐÔ±ð: GG
- רҵ: ½ðÊôÓлú»¯Ñ§
5Â¥2011-04-06 20:09:38













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