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 Ozon va kislorod aralashmasining o‘rtacha molyar massasi 40 g/mol bo‘lsa, undagi ozonning hajmiy ulushini aniqlang. 60% 80% 50% 70% 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. 45 60 30 20 3 / 25 Teng hajmda olingan kislorod va ozon massalari bir – biridan 480 g ga farq qilsa, aralashmadagi kislorod massasini(g) hisoblang. 320 1280 640 960 4 / 25 Agar quyidagi reaksiya butun koeffisentlar bilan tenglashtirilsa, H+ oldidagi koeffisent nechaga teng? 7 14 3 4 5 / 25 Ma’lum bir sharoitda N₂O₄(g) ⇄ 2NO₂(g) reaksiyaning muvozanat konstantasi 5,0·10-2 ga teng. Xuddi shu sharoitda NO₂(g) ⇄ ½ N₂O₄(g) reaksiyaning muvozanat konstantasini hisoblang. 10 0.05 20 4.5 6 / 25 D C B A 7 / 25 D A B C 8 / 25 C B D A 9 / 25 D C B A 10 / 25 D A C B 11 / 25 B C D A 12 / 25 A D B C 13 / 25 A C B D 14 / 25 B A C D 15 / 25 A B D C 16 / 25 A B C D 17 / 25 B A C D 18 / 25 A B D C 19 / 25 B D A C 20 / 25 A C B D 21 / 25 C B A D 22 / 25 C B D A 23 / 25 D A B C 24 / 25 D B C A 25 / 25 A B D C 0% Author: InfoMaster Foydali bo'lsa mamnunmiz
