Jizzax viloyati zomin tumani 2-maktabining – “ ” sinf o`quvchisi

Topshiriq: 
 
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3- Nazorat ishi. 
Mavzu: 
Molekula. Nisbiy molekulyar massa
Oddiy va murakkab moddalar

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14 
Modda miqdori. Avogadro doimiysi. Moddaning molyar м 
Kimyoviy reaksiyalarning tenglamalarini tuzish