Uy » Online olimpiada » Kimyo olimpiada » 9-sinf Kimyo olimpiada №4 Kimyo olimpiada 9-sinf Kimyo olimpiada №4 InfoMaster Yanvar 5, 2023 613 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 2 2 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? 60°C 70°C 90°C 80°C 2 / 25 Qutbsiz kovalent bog’li molekulalar juftini aniqlang. NaBr, HBr; HBr, РН3 MgJ2 , SO2 S8 , F 3 / 25 238U → E + x β+ y 0n1. ushbu yadro reaksiyada x/y ning qiymati 0,375 ga teng bo’lsa, noma’lum element izotopini aniqlang. (x+y=11) ²⁷⁶Rn ²³⁰Th ²³²Pa ²³⁰Ac 4 / 25 20 l NO va 30 l O₂ aralashtirildi. Moddalar doimiy temperatura va bosimda reaksiyaga kirishdi hamda hamma NO NO₂ ga aylandi. Hosil bo`lgan gazlar aralashmasining hajmi l da qancha? 40 50 60 70 5 / 25 Bir xil sharoitda gazsimon selen ftoridi gazsimon kisloroddan 4,84 marta og`ir bo`lsa, u ftorid tarkibida qancha ftor atomi borligini aniqlang. 4 6 5 2 6 / 25 C D B A 7 / 25 C A B D 8 / 25 D C B A 9 / 25 A B C D 10 / 25 A D B C 11 / 25 B D A C 12 / 25 A B D C 13 / 25 A D B C 14 / 25 A D B C 15 / 25 D B C A 16 / 25 D B C A 17 / 25 B D A C 18 / 25 C B D A 19 / 25 C B A D 20 / 25 C D B A 21 / 25 D B A C 22 / 25 B D C A 23 / 25 D A C B 24 / 25 C A D B 25 / 25 D B A C 0% Author: InfoMaster Foydali bo'lsa mamnunmiz
