Судың кермектігі және кальций гидроксиді
Flashcard
•
Chemistry
•
6th Grade
•
Hard
Ксп Ксп
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2 questions
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1.
FLASHCARD QUESTION
Front
Судың кермектігін қандай тұздар тудыруы мүмкін?
Back
CaCl2, MgSO4, Ca(HCO3)2, MgCl2, Mg(NO3)2
2.
FLASHCARD QUESTION
Front
Массасы 162 г 5%-дық кальций гидрокарбонатыны ерітіндісіне орта тұз алу үшін кальций гидроксидінің қандай массасын қосу қажет?
Back
m(Ca(HCO3)2)=162*0,05 = 8,1 г.
х = 74*8,1/162 = 3,7 г.
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