30 talik sinov javobli 1

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andqxai qoshidagi akademik litsey sinov i-variant 1. teng mol nisbatda olingan metan va silan aralashmasining o'rtacha molyar massasini (g/mol) aniqlang. a) 18 b) 56/6 c)24 d) 64/3 2. atom yadrosining zaryadining elementning davriy sistemadagi tartib raqamiga tengligini topgan olim. a) sengi, 1900 b) lamonosov, 1895 c) dalton, 1915 d) mozli, 1913 3. h2s va so2 dan iborat 0,8 mol aralashma 45,2 g bo'lsa, aralashmadagi gazlarning mol nisbatini aniqlang? a) 1:2 b) 1:3 c )1:4 d) 1:1 4. tirik organizmda bo'ladigan insulin gormoni c254h377n65o76s6. shuning molekulyar massasini toping. a)5744 b)5473 c)5743 d)6743 5. 32 g mis (ii) sulfat tarkibidagi atomlar sonini aniqlang (mol). a) 1,2 b)0,6 c) 1,8 d) 2,4 6. davriy sistemada aktinoidlar qanday holatni egallaydi? a) 7 davr 3 guruh b) 6 davr 3 guruh c) 6 davr 4 guruh d) 7 davr 4 guruh 7. hajmi 10 l bo'lgan idish 8 mol a gaz bilan to'ldirildi. 0,5 minutdan …

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asi; d) bosim, 2co +02 → 2c02 + 566 kj reaksiyada muvozanat qaysi tomonga siljishini aniqlang. a)a - chapga; b - chapga; s - chapga; d - o'ngga b) a - o'ngga; b - chapga; s - chapga; d - o'ngga c) a - o'ngga; b - chapga; s - o'ngga; d - o'ngga d) a - o'ngga; b - chapga; s - chapga; d - chapga 14. natriy gidrofosfat na2hp04 ∙ nh20 da 11,57% fosfor bor. kristallogidrat tarkibidagi n ning qiymati nechaga teng? a) 12 b) 7 c) 5 d) 10 15. 250 g 30% li tuz eritmasini tayyorlash uchun necha g tuz kerak bo'ladi? a) 280 b)30 0) 100 d) 75 16. quyidagi moddalarni kristall panjaralar turi bilan to'g’ri juftlab ko’rsating. 1) quruq muz; 2) olmos; 3) benzol; 4) kaliy; 5) natriy bromid; 6) metan. a) molekulyar; b) atom; c) ion; d) metali. a) 1-a, 2-b, 3-a, 4-d, …

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andqxai qoshidagi akademik litsey sinov i-variant 1. teng mol nisbatda olingan metan va silan aralashmasining o'rtacha molyar massasini (g/mol) aniqlang. a) 18 b) 56/6 c)24 d) 64/3 2. atom yadrosining zaryadining elementning davriy sistemadagi tartib raqamiga tengligini topgan olim. a) sengi, 1900 b) lamonosov, 1895 c) dalton, 1915 d) mozli, 1913 3. h2s va so2 dan iborat 0,8 mol aralashma 45,2 g bo'lsa, aralashmadagi gazlarning mol nisbatini aniqlang? a) 1:2 b) 1:3 c )1:4 d) 1:1 4. tirik organizmda bo'ladigan insulin gormoni c254h377n65o76s6. shuning molekulyar massasini toping. a)5744 b)5473 c)5743 d)6743 5. 32 g mis (ii) sulfat tarkibidagi atomlar sonini aniqlang (mol). a) 1,2 b)0,6 c) 1,8 d) 2,4 6. davriy sistemada aktinoidlar qanday holatni egallaydi? a) 7 davr 3 …

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