kimyo test savollari

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1-variant 1. 14,2 g (nh4)2c2o4.h2o dagi modda miqdorini toping. a) 0,1 mol b) 1 mol c)0,01 mol d) 0,5 mol 2. 4,86 g kaliy geksaxloroplatinat (k2ptcl6) dagi modda miqdorini toping. a)0,01 mol b) 0.02 mol c) 0,1 mol d) 0,03 mol 3. 112 gr azot gazining modda miqdori, molekulalar soni va hajmini toping-? a) 3 mol ,6,02-1023 , 67,2 l. b) 4 mol , 24,08-1023 , 67,2 l c) 4 mol , 24,08-1023 , 89,6 l d)4 mol , 24,08-1023 , 67,2 l 4. 42,14-10 23 neon gazining modda miqdori, massasi va hajmini toping-? a. 4 mol , 80 , 67,2 l b. 7 mol , 140, 156,8 l c) 2 mol , 40 , 13,44 l b) 8 mol , 160 , 134,4 l 5. 33,6 litr argon gazining modda miqdori, molekula soni va massasini toping-? a)3 mol, 18,06-1023, 40gr b)1,5 mol, 9,03-1023 , 60gr c) 2 mol, 18,06-1023 …

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od-18% va vodorod-10%. organizimdagi elеmеnt atomlari ortib borish tartibini aniqlang. a)h, c, o b) c, h, o c) h, o, c d) c, o, h 15. vodorod, azot va kislorodning massa ulushlari tеgishlicha 1,59%, 22,22% va 76,19% ga tеng. shu moddaning eng oddiy formulasini toping. a. nitrit kislota b) nitrat kislota b. ammoniy nitrit d) ammoniy nitrat 16. fosforning ftorli birikmasi tarkibidagi ftorning massa ulushi 0,754 bo‘lgandagi modda formulasini toping. a)h[pf6] b) p2f10 c) pf5 d) h[pf4] 17. kumushning massa ulushi 89% bo‘lsa, alyuminiy bilan kumush birikmasining formulasini aniqlang. a)ag4al2 b) agal2 c) ag5al2 d) ag2al 18. noma'lum modda tarkibida 20,2% ayuminiy va 79,8% xlor borligi ma'lum bo‘lsa, shu moddaning formulasini va undagi ayuminiy ning ekvivalеntini toping. a)alcl3; 3 b) alcl3; 9 c) alcl3; 27 d) alcl; 9 19. tarkibida 15,79% uglеrod va 84,21% oltingugurt bo‘lgan birikmadagi oltingugurtning valеntligi va ekvivalеntini toping. a)vi; 5, 33 b) vi; 8 c) ii; …

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d) nh4no3 25. na2co3nh2o kristalogidratdagi suvning massa ulushi 62,94% ni tashkil etadi. n ni aniqlang. a)12 b)7 c) 5 d)10 26. massasi 235 g bo'lgan h2so4 ning molini toping? a) *2.39796 b) 5.9949 c) 4.79592 d) 2.99745 27. massasi 198 g bo'lgan 2.02041 mol moddaning molekulyar massasini toping ? a) 196 b)* 98 c) 39.2 d) 78.4 28. modda miqdori 1.2 mol bo'lgan h2so4 ning massasini toping? a) 164.64 b)94.08 c)* 117.6 d) 70.56 29. massasi 29 g bo'lgan h2o ning molini toping? a) 2.01389 b) 4.02778 c) 3.22222 d) * 1.61111 30. massasi 146 g bo'lgan h2o ning molini toping? a) *8.11111 b) 20.27778 c) 16.22222 d) 10.13889 31. massasi 227 g bo'lgan 12.61111 mol moddaning molekulyar massasini toping ? a) 36 b)* 18 c) 7.2 d) 14.4 32. modda miqdori 1.1 mol bo'lgan h2o ning massasini toping? a) *19.8 b) 27.72 c) 15.84 d) 11.88 33. modda miqdori …

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b)* 63 c) 25.2 d) 50.4 10. massasi 67 g bo'lgan 1.06349 mol moddaning molekulyar massasini toping ? a) 126 b) 25.2 c) 50.4 d) 63* 11. cr+3 ioni x+ ionidan 3 marta ko‘p elektronga ega bo‘lsa, cr ning tartib nomeri x ning tartib nomeridan necha marta ortiq? a) 4 b) 3 c) 5 d)6 12. massasi 6,179*10-26 kg va va 5,845 *10-26kg bo‘lgan atomlarda mos ravishda 20 va 18 tadan neytroni borligi ma’lum bo‘lsa ulardagi protonlar sonini toping. a)17va17 b) 17va 18 c)18va18d) 19 va 19 13. tabiiy surma ikkita izotopdan tarkib topgan: sb va sb. ularning molyar ulushlari mos ravishda 62,5% va 37,5% ga tеng bo‘lsa, surmaning o‘rtacha nisbiy atom massasini aniqlang. a)122,8 b) 121,75 c) 120 d) 123 14. tabiiy iridiy ikkita izotopdan tarkib topgan: ir va ir. ularning molyar ulushlari mos ravishda 39% va 61% ga tеng bo‘lsa, iridiyning o‘rtacha nisbiy atom massasini aniqlang. a)190,8 b) …

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dagi har qaysi izotopning molyar ulushini aniqlang. a) 0,90, 0,10 b) 0,80, 0,20 c) 0,75, 0,25 d) 0,31, 0,69 21. elektronlar soni o‘zaro teng bo‘lgan uglerod (iv) oksidi va azot aralashmasining vodorodga nisbatan zichligini aniqlang? a) 13,5 b) 17 c) 36 d) 5,4 22. elektronlar soni o‘zaro teng bo‘lgan vodorod va azot aralashmasining geliyga nisbatan zichligini aniqlang? a) 1,79 b) 1,31 c) 1,92 d) 2,14 23. elektronlar soni o‘zaro teng bo‘lgan kislorod va azot aralashmasining havoga nisbatan zichligini aniqlang? a) 0,84 b) 0,42 c) 1,0 d) 1,59 24. normal sharoitda quyida keltirilgan gazlardan qaysi biri 11,2 l hajmni egallaydi. a) 36 g ch4 b) 18 g so3 c) 30 g c2h6 d) 17 g h2s 25. (n.sh.) da 1,12 l amiakning massasini grammda hisoblang? 0,85 b) 0,95 c) 1,05 d) 1,25 26. amiakning 3,4 gramm massasi (n.sh.) da qancha hajmni egallaydi? a) 6,72 b) 4,48 c) 5,6 d) 2,8 27. …

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1-variant 1. 14,2 g (nh4)2c2o4.h2o dagi modda miqdorini toping. a) 0,1 mol b) 1 mol c)0,01 mol d) 0,5 mol 2. 4,86 g kaliy geksaxloroplatinat (k2ptcl6) dagi modda miqdorini toping. a)0,01 mol b) 0.02 mol c) 0,1 mol d) 0,03 mol 3. 112 gr azot gazining modda miqdori, molekulalar soni va hajmini toping-? a) 3 mol ,6,02-1023 , 67,2 l. b) 4 mol , 24,08-1023 , 67,2 l c) 4 mol , 24,08-1023 , 89,6 l d)4 mol , 24,08-1023 , 67,2 l 4. 42,14-10 23 neon gazining modda miqdori, massasi va hajmini toping-? a. 4 mol , 80 , 67,2 l b. 7 mol , 140, 156,8 l c) 2 mol , 40 , 13,44 l b) 8 mol …

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