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南宁市2026年初中学业水平考试理化实验操作性考试知识要点及评定记录(学生用)化学科-课题6:配制50g质量分数为6%的氯化钠溶液

  • 2026-06-11 05:07:50
南宁市2026年初中学业水平考试理化实验操作性考试知识要点及评定记录(学生用)化学科-课题6:配制50g质量分数为6%的氯化钠溶液

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南宁市2026年初中学业水平考试理化实验

操作性考试知识要点及评定记录（学生用）

化学科

课题6：配制50g质量分数为6％的氯化钠溶液

实验报告

实验内容

分析与判断

1．计算

配制50g6%的氯化钠溶液，需要氯化钠的质量和蒸馏水的体积

需氯化钠g

需水g, 水的体积为mL

2．称量

用托盘天平称量所需质量的氯化钠，将氯化钠倒入干燥的小烧杯中

3．量取

用量筒量取所需体积的蒸馏水，将其倒入上述烧杯中

应选用mL量筒量取蒸馏水

4.　溶解

用玻璃棒不断搅拌，直到氯化钠完全溶解

用玻璃棒搅拌的目的是。

5．将配好的溶液装入试剂瓶，盖好瓶塞并贴上标签

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南宁市2026年初中学业水平考试理化实验操作性考试知识要点及评定记录(学生用)化学科课题4:碱部分化学性质的实验

南宁市2026年初中学业水平考试理化实验操作性考试知识要点及评定记录(学生用)化学科-课题2:酸和碱的中和反应

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  137. /yingpanguazai/ssd/ssd1/www/d.460.net.cn/vendor/topthink/think-template/src/template/driver/File.php ( 2.41 KB )
  138. /yingpanguazai/ssd/ssd1/www/d.460.net.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/d.460.net.cn/runtime/temp/d9f0991a7dd66afa499551bd49d930d7.php ( 11.98 KB )
  140. /yingpanguazai/ssd/ssd1/www/d.460.net.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000424s ] mysql:host=127.0.0.1;port=3306;dbname=d460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000690s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000268s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000291s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000604s ]
  6. SELECT * FROM `set` [ RunTime:0.000218s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000546s ]
  8. SELECT * FROM `article` WHERE `id` = 498559 LIMIT 1 [ RunTime:0.000539s ]
  9. UPDATE `article` SET `lasttime` = 1781277540 WHERE `id` = 498559 [ RunTime:0.001173s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000263s ]
  11. SELECT * FROM `article` WHERE `id` < 498559 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000468s ]
  12. SELECT * FROM `article` WHERE `id` > 498559 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000399s ]
  13. SELECT * FROM `article` WHERE `id` < 498559 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000849s ]
  14. SELECT * FROM `article` WHERE `id` < 498559 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002820s ]
  15. SELECT * FROM `article` WHERE `id` < 498559 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000949s ]
0.100418s