Nazorat ishi- 4 - nazorat ishi Davriy jadvalda nechta oila mavjud A. B. S

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nazorat ishi Davriy jadvalda nechta oila mavjud A. B. S
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bet | 7/13 | Sana | 29.11.2023 | Hajmi | 60,83 Kb. | | #107627 |
Bog'liq 1- nazorat ishi Davriy jadvalda nechta oila mavjud A. 3 B. 4 S. -hozir.orgNazorat ishi- 4
I variant
1. 46 gr Na metalining 300 g suvda erishi natijasida hosil bo’lgan eritmadagi NaOH ning foiz konsentrasiyasini toping.
2. 275 g suvda 50 g mis kuporosi eritilishi natijasida hosil bo’lgan eritmaning konsentrasiyasini (foizda) toping.
3. masala: 300 g 5 % li va 400 g 20 % li NaCl eritmalari bir idishga solib aralashtirilishidan hosil bo‘lgan eritmaning foiz konsentratsiyasini (%) hisoblang.
4. Sulfat kislotani 5 % li eritmasini tayyorlash uchun 1005 g suvda qancha hajm sulfat angidrid eritilishi kerak?
5. 56 % li (ρ = 1,46 g/ml) H2SO4 eritmasining normal konsentrasiyasini aniqlang.
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