Uy » Online olimpiada » Kimyo olimpiada » 9-sinf Kimyo olimpiada №4 Kimyo olimpiada 9-sinf Kimyo olimpiada №4 InfoMaster Yanvar 5, 2023 607 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 Moddaning kimyoviy xossalarini o‘zida saqlovchi eng kichik zarra bu - … atom klaster yadro molekula 2 / 25 238U → E + x β+ y 0n1. ushbu yadro reaksiyada x/y ning qiymati 0,375 ga teng bo’lsa, noma’lum element izotopini aniqlang. (x+y=11) ²³⁰Th ²³⁰Ac ²³²Pa ²⁷⁶Rn 3 / 25 NO va N2Ox dan iborat aralashmada kislorodning massa ulushi 40% , NO ning massa ulushi 21,4% bo’lsa, X ni toping. 5 3 1 2 4 / 25 Eng qutibli bog`: Br-Cl P-Cl N-Cl I-Cl 5 / 25 Quyidagi oksidlardan qaysi birining suv bilan reaksiyasidan ishqoriy muhit hosil bo`ladi? CO₂ Na₂O CrO₃ Cu₂O 6 / 25 A C B D 7 / 25 B C A D 8 / 25 C D B A 9 / 25 B D A C 10 / 25 C A B D 11 / 25 C A B D 12 / 25 D C A B 13 / 25 D A C B 14 / 25 C D B A 15 / 25 D A C B 16 / 25 A C D B 17 / 25 D B C A 18 / 25 B A D C 19 / 25 A C D B 20 / 25 A B D C 21 / 25 C B A D 22 / 25 C B A D 23 / 25 A D C B 24 / 25 B A D C 25 / 25 C A D B 0% Author: InfoMaster Foydali bo'lsa mamnunmiz
