Uy » Online olimpiada » Kimyo olimpiada » 9-sinf Kimyo olimpiada №4 Kimyo olimpiada 9-sinf Kimyo olimpiada №4 InfoMaster Yanvar 5, 2023 711 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 2 1 12345678910111213141516171819202122232425 Vaqtingiz tugadi! 9-sinf Kimyo olimpiada №4 03.01.2023 yil oo.uzedu.uz Online olimpiada savollari! 1 / 25 BCl2 molekulasida B atomlari sp² gibridlangan bo‘lib, B-Cl bog‘ining uzunligi x ga teng. BCl3 molekulasida Cl atomlari orasidagi masofa 0,303 nm bo‘lsa, x ning qiymatini aniqlang. 0,175 nm 1,175 nm 0,275 nm 0,185 nm 2 / 25 Sulfat angidridning parchalanish reaksiyasini to’rt marta orttirish uchun idishning hajmi qanday o’zgarishi lozim. 4 marta kamayishi 4 marta ortishi 2 marta kamayishi 2 marta ortishi 3 / 25 Tarkibida 36 g tuz bo’lgan eritmaga 20 g tuz qo’shildi. Natijada konsentratsiya 10 % ga ortdi. Boshlang’ich eritmadagi tuzning massa ulushini toping? 1) 50 2) 303) 60 4) 40 5) 25 2 2.3 1.5 4 4 / 25 Eng qutibli bog`: I-Cl P-Cl N-Cl Br-Cl 5 / 25 Pirobelonit PbMn₂VO₄OH mineralida vanadiyning oksidlanish darajasi: +3 +1 +5 +2 6 / 25 A D C B 7 / 25 A C B D 8 / 25 C D B A 9 / 25 B A C D 10 / 25 C D A B 11 / 25 C D B A 12 / 25 D B C A 13 / 25 B C A D 14 / 25 B C D A 15 / 25 C A D B 16 / 25 C A D B 17 / 25 B D C A 18 / 25 D B A C 19 / 25 C D B A 20 / 25 D A C B 21 / 25 B C A D 22 / 25 C D A B 23 / 25 C B D A 24 / 25 B D C A 25 / 25 A C B D 0% Author: InfoMaster Foydali bo'lsa mamnunmiz
