Uy » Online olimpiada » Kimyo olimpiada » 9-sinf Kimyo olimpiada №4 Kimyo olimpiada 9-sinf Kimyo olimpiada №4 InfoMaster Yanvar 5, 2023 653 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 0,185 nm 0,275 nm 1,175 nm 2 / 25 NO va N2Ox dan iborat aralashmada kislorodning massa ulushi 40% , NO ning massa ulushi 21,4% bo’lsa, X ni toping. 1 5 3 2 3 / 25 1,25x molyalli eritma hosil qilish uchun 28g kaliy ishqori x molyalli eritmaga qo’shildi. Hosil bo’lgan eritmaning massa ulushini (%) hisoblang. 16.7 21.9 12.28 26 4 / 25 Agar quyidagi reaksiya butun koeffisentlar bilan tenglashtirilsa, H+ oldidagi koeffisent nechaga teng? 3 7 14 4 5 / 25 Quyida molekulaning elektron tuzilishi berilgan: OF₂ H₂O N₂O CO₂ 6 / 25 C A D B 7 / 25 A C D B 8 / 25 C B A D 9 / 25 A C D B 10 / 25 C D A B 11 / 25 A D C B 12 / 25 A C B D 13 / 25 A B D C 14 / 25 B C A D 15 / 25 C D B A 16 / 25 C D A B 17 / 25 D C B A 18 / 25 A B C D 19 / 25 C B A D 20 / 25 C A D B 21 / 25 B D A C 22 / 25 D B C A 23 / 25 B C A D 24 / 25 B D C A 25 / 25 D A C B 0% Author: InfoMaster Foydali bo'lsa mamnunmiz
