30 talik sinov javobli 1

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 …

This file contains 2 pages in PDF format (338.8 KB). To download "30 talik sinov javobli 1", click the Telegram button on the left.