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Xorazm viloyati shovot tumani ning 11 – “ ” sinf o`quvchisi
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| bet | 5/8 | | Sana | 27.01.2023 | | Hajmi | 69.93 Kb. | | #39840 |
Bog'liq 11-sinf kimyo nazorat ishi daftar 2022[1] yigish-chizmalarini-detallarga-ajratishda-yol-qoyadigan-tipik-xatolar (1), CHG va MG - sirtqi talim uchun metodik qollanma, O‘zbek tili iftixorim inshoSANA:
Nazorat ishi- 4
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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O’quvchi bahosi :
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