Uy » Online olimpiada » Kimyo olimpiada » 9-sinf Kimyo olimpiada №4 Kimyo olimpiada 9-sinf Kimyo olimpiada №4 InfoMaster Yanvar 5, 2023 675 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 2 0 12345678910111213141516171819202122232425 Vaqtingiz tugadi! 9-sinf Kimyo olimpiada №4 03.01.2023 yil oo.uzedu.uz Online olimpiada savollari! 1 / 25 Gipotetik reaksiyaning tezligi temperatura 20°C dan 50°C gacha ko‘tarilganida 8 marta oshsa, 50°C dagi tezlikni yana 4 martaga oshirish uchun temperaturani necha °C gacha ko‘tarish kerak? 80°C 60°C 70°C 90°C 2 / 25 Biror bir tuzning 70°C dagi eruvchanlik koeffitsiyenti uning 50°C dagi eruvchanlik koefsiyentidan 1,5 barobar ko’p. Agar shu tuzning 70°C dagi to’yingan 290 g eritmasi 50°C ga qadar sovitilganda 30 g tuz cho’kmaga tushishi ma’lum bo’lsa, shu tuzning 70°C dagi eruvchanlik koeffitsiyentini aniqlang. 60 30 20 45 3 / 25 Qutbsiz kovalent bog’li molekulalar juftini aniqlang. HBr, РН3 NaBr, HBr; S8 , F MgJ2 , SO2 4 / 25 Eng qutibli bog`: Br-Cl P-Cl I-Cl N-Cl 5 / 25 Quyidagi qaysi elementdan tashqari barcha elementlar allatropiyani namoyon qiladi? Kr S C O 6 / 25 B A D C 7 / 25 D C A B 8 / 25 A B C D 9 / 25 C B A D 10 / 25 B A D C 11 / 25 A D C B 12 / 25 D B C A 13 / 25 C A B D 14 / 25 D A B C 15 / 25 A B D C 16 / 25 D B C A 17 / 25 C B A D 18 / 25 A C B D 19 / 25 B C A D 20 / 25 B C D A 21 / 25 B C A D 22 / 25 B A C D 23 / 25 D C A B 24 / 25 A B D C 25 / 25 C D A B 0% Author: InfoMaster Foydali bo'lsa mamnunmiz
