1-Nazorat ishi

To’ldiruvchi savollar
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------To’ldiruvchi so’rov bali ________
II variant

1. 9g suv hosil qilish uchun qancha massa vodorod va kislorod kerak bo’ladi?

2. Tarkibida 43,66% fosfor va 56,33% kislorod bo’lgan moddaning formulasini aniqlang.

3.8g kislorodning normal sharoitidagi hajmini va undagi molekulalar sonini toping.

4. 42,75g aluminiy sulfat AL₂(SO₄) ning modda miqdorini hisoblang.

5. Quyidagi reaksiyalarini tugallangan va koeffitsiyentlarni tanlang.