1-Nazorat ishi

Nazorat shakli: Masalalar yechish.

I. variant

1. 87,75g osh tuzini hosil qilish uchun qancha massa natriy kerak?

2. Tarkibida 63,22% marganes va 36,78% kislorod bo’lgan moddaning formulasini aniqlang.

3. 10g vodorodning normal sharoitidagi hajmini va undagi molekulalar sonini toping.

4. 41g natriy fosfat Na₃ PO₄ ning modda miqdorini hisoblang.

5. Quyidagi reaksiyalarining tugallangan va koeffitsiyentlarini qo’ying.

t^o

AL+CL₂ = AgBr--------

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