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ID number:988880
 
Author:
Evaluation:
Published: 01.07.2005.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Bors – brīvā veidā nav sast., galvenok. tikai savien. Var atrast augu un dz. org. kā mikroelementus un akmeņogļu pelnos
Boraks Na­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­2­B­­­4­O7*10H2O
Kernīts Na2B4O7*4H2O
Borskābe H3BO3
Iegūst no Boraka Na­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­2­B­­­4­O7*10H2O­→ H3BO3→B
Parastos apst. reaģē ar fluoru B+3F3
Paaugs­t. t­­­­o reaģē ar:
ar O2 4B+3O2→2B2O3
pie 1000­oC ar N 2B+3N→B2N3
ar H2O 4B+6H2O→2B2O2+H2↑
ar skābēm B+3HNO3→H3BO3+3NO2…

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