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  • Toshkent viloyati quyi chirchiq tumani maktabining 7 – “ ” sinf o`quvchisi




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    7-Sinf KIMYO NAZORAT ISHI daftar 2022

    3- Nazorat ishi.
    Mavzu:

    Molekula. Nisbiy molekulyar massa

    Oddiy va murakkab moddalar

    Modda miqdori. Avogadro doimiysi. Moddaning molyar м

    Kimyoviy reaksiyalarning tenglamalarini tuzish



    Nazorat shakli: masalalar yechish.
    1-masala: 87,75g osh tuzini hosil qilish uchun qancha massa natriy metali kerak.
    2-masala: tarkibida 63,22 % Mn va 36,78 % O bo’lgan moddaning formulasini aniqlang.
    3-masala: 10g H2 ning normal sharoyitdagi hajmini va undagi molekulalar sonini toping.
    4-masala: 41g natriy fosfatning modda miqdorini hisoblang.
    5-masala: Quyidagi reaksiyalarni tugallang va koeffitsiyentlarni qo’ying.
    Al + Cl2 → P + O2 →
    N2 + H2→ Ag+Br→
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    Sana Ball Imzo




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    Toshkent viloyati quyi chirchiq tumani maktabining 7 – “ ” sinf o`quvchisi

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