Uy » Online olimpiada » Kimyo olimpiada » 9-sinf Kimyo olimpiada №4 Kimyo olimpiada 9-sinf Kimyo olimpiada №4 InfoMaster Yanvar 5, 2023 611 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 10 m³ hajmli idishda 2 atm bosim 25°C temperaturada 22,9 kg qutbsiz gaz qamalgan bo‘lsa, ushbu gazning kimyoviy formulasini keltiring. Cl N2 H2O H2 2 / 25 Galogenid kislotaning 1,4 M li eritmasining titri 113,4 mg/ml ga teng. Galogenid kislotani aniqlang. HF HJ HCl HBr 3 / 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. 20 30 45 60 4 / 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. 0.05 10 20 4.5 5 / 25 1,00 gr Mg(NO₃)₂·xH₂O kristallogidrati 550 °С da qizdirildi, natijada 0,217 gr qattiq qoldiq hosil bo`ldi. Kristallogirdatdagi х ni aniqlang. 2 1 6 4 6 / 25 B D C A 7 / 25 A B D C 8 / 25 D B A C 9 / 25 B A D C 10 / 25 B D A C 11 / 25 B D C A 12 / 25 D B A C 13 / 25 D C A B 14 / 25 B D A C 15 / 25 D B A C 16 / 25 C B A D 17 / 25 D C A B 18 / 25 B A D C 19 / 25 D B C A 20 / 25 D C B A 21 / 25 B C D A 22 / 25 C D B A 23 / 25 B D A C 24 / 25 A C B D 25 / 25 A D B C 0% Author: InfoMaster Foydali bo'lsa mamnunmiz
