nazorat ishi Davriy jadvalda nechta oila mavjud A. B. S. 5 D

O’qituvchi bahosi _________

II- variant

1. 3 gr vodorod bilan 24 gr kislorod aralashmasi portlatilganda, necha gramm suv hosil bo’ladi.

2. Vodorodga nisbatan zichligi 35 ga teng bo’lgan SO₂ va SO₃ gazlari aralashmasining 8 litr hajmini yondirish uchun qancha hajm (l, n.sh ) havo sarf bo’ladi.

3.Havoga nisbatan zichligi 7,587 ga teng bo’lgan fosfor oksidlarining biridagi fosforning massa ulushi 56,4 % ni tashkil etadi. Shu oksidning molekulyar formulasini aniqlang

4. 5,6 litr ammiakning normal sharoitdagi massasini, modda miqdorini, molekulalar sonini, hamda atomlar sonini toping

5. Uglerod (IV) oksid 22⁰ da va 500 kPa bosimda hajmi 20 l bo’lgan idishda saqlanadi. Uning massasini gr aniqlang.

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