Uy » Online olimpiada » Kimyo olimpiada » 9-sinf Kimyo olimpiada №4 Kimyo olimpiada 9-sinf Kimyo olimpiada №4 InfoMaster Yanvar 5, 2023 682 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 50 g ohaktosh parchalanganda 32,4 g qattiq qoldiq qolgan bo‘lsa, parchalanmay qolgan ohaktoshning massasini aniqlang. 0,0 g 20,0 g 10,0 g 22,4 g 2 / 25 Teng hajmda olingan kislorod va ozon massalari bir – biridan 480 g ga farq qilsa, aralashmadagi kislorod massasini(g) hisoblang. 640 1280 320 960 3 / 25 MeSO4 o’zining massasidan 2 marta ko’p suvda eritilganda eritmadagi SO42- anionining massa ulushi 1/5 ga teng bo’ldi. Metallni aniqlang. Mg Cd Fe Cu 4 / 25 Eng qutibli bog`: N-Cl Br-Cl P-Cl I-Cl 5 / 25 Agar quyidagi reaksiya butun koeffisentlar bilan tenglashtirilsa, H+ oldidagi koeffisent nechaga teng? 7 4 14 3 6 / 25 D B A C 7 / 25 B D C A 8 / 25 B D C A 9 / 25 A C B D 10 / 25 D A B C 11 / 25 A C B D 12 / 25 C B A D 13 / 25 D A B C 14 / 25 D C A B 15 / 25 C B A D 16 / 25 C A B D 17 / 25 D C A B 18 / 25 B D A C 19 / 25 B C A D 20 / 25 B D C A 21 / 25 A B C D 22 / 25 C B A D 23 / 25 A B D C 24 / 25 B C A D 25 / 25 A D C B 0% Author: InfoMaster Foydali bo'lsa mamnunmiz
