Fanining stexiometrik qonunlari

4) Zarrachalar sonini topish.

40. 52,2 g bariy nitratdagi azot atomlarining soni nechta?

A) 2,0•10²² B) 2,4•10²³ C) 2,9•10²³ D) 2,5•10²²

41. 3,5 mol kadmiy tarkibida nechta atom mavjud?

A) 1,2•10²⁴ B) 2,4•10²⁴ C) 6,0•10²³ D) 2,1•10²⁴

42. 0,04 mol litiy oksiddagi litiy atomlari sonini toping.

A) 4,8•10²² B) 6,02•10²³ C) 2,4•10²² D) 3•10²³

43. 2 mol suvda nechta vordorod atomi bor?

A) 6•10²⁴ B) 12•10²³ C) 24•10²³ D) 3•10²⁴

44. Massasi 615 g bo’lgan magniy sulfat kristallogidratida tuz molekulalarining suv molekulalariga nisbati 1:7 bo’lsa, undagi kislorod atomlari sonini toping.

A) 24,08•10²³ B) 18,06•10²³

C) 1,65•10²⁵ D) 17,5•10²³

45. Massasi 340 g bo’lgan sulfat kislota kristallogidratida, kislota molekulalarining suv molekulalariga nisbati 1:4 bo’lsa, undagi kislorod atomlari sonini toping.

A) 24,08•10²³ B) 18,06•10²³

C) 15,05•10²³ D) 96,32•10²³

46. Massasi 0,858 kg bo’lgan natriy karbonat kristallogidratida, tuz molekulalarining suv molekulalariga nisbati 1:10 bo’lsa, undagi kislorod atomlari sonini toping.

A) 24,08•10²³ B) 18,06•10²⁵

C) 23,478•10²⁴ D) 96,32•10²³

47. Bir tomchi suv ( ρ=0,03 ml ) da nechta molekula bo’ladi?

A) 8•10²⁰ B) 1•10²¹ C) 6•10²³ D) 2•10²⁰

48. Bir tomchi suv 0,033 ml bo’lsa, 50 tomchi suvda nechta molekula bo’ladi?

A) 8,2•10²⁰ B) 5,5•10²² C) 6,02•10²³ D) 2•10²⁰

49. Bir tomchi etil spirti 0,033 ml (ρ=0,90 g/ml) bo’lsa, 30 tomchi spirtda nechta molekula bo’ladi?

A) 11,66 •10²¹ B) 3,01•10²¹ C) 6•10²³ D) 2•10²⁰

50. Bir tomchi etil spirti 0,033 ml (ρ=0,90 g/ml) bo’lsa, 20 tomchi spirtda nechta molekula bo’ladi?

A) 11,66•10²¹ B) 7,77•10²¹

C) 6,02•10²³ D) 2,408•10²⁰

51. Uglerod (II) oksidning nechta molekulasi 16 g bo’ladi?

A) 1,5•10²³ B) 2,0•10²³ C) 1,2•10²³ D) 3,44•10²³

52. 0,04 mol natriy oksiddagi natriy atomlari sonini toping.

A) 4,8•10²² B) 6,02•10²³ C) 2,4•10²² D) 3•10²³

53. 6,96 g Fe₂(SO₄)₃•10H₂O da nechta vodorod atomi bor?

A) 44•10²² B) 13,2•10²² C) 14,4•10²² D) 16•10²²

54. Hajmi 1l bo’lgan suv (ρ = 1 g/ml) tarkibidagi molekulalar soni nechta?

A) 6,02•10²³ B) 3,34•10²⁴

C) 3,34•10²⁵ D) 6,02•10²⁶

55. Massasi 50 g tanga tarkibida 20 % nikel metali bo’lsa, undagi metall atomlari sonini hisoblang?

A) 1,02•10²³ B) 1,60•10²³ C) 10,8•10²² D) 4,4•10²²

II BOB. GAZ QONUNLARI.

1. GEY-LYUSSAK ning HAJMIY NISBATLAR qonuni. AVOGADRO qonuni.

1. Avogadro qonuni qanday tariflanadi?

A) Kimyoviy reaksiyaga kirishgan moddalar massasi hosil bo’lgan moddalar massasiga hamma vaqt teng bo’ladi.

B) Har qanday murakkab moddaning tarkibi, qaysi usulda olinishidan qatiy nazar, bir xil bo’ladi.

C) Reaksiya uchun olingan gazlarning va hosil bo’lgan gazlarning hajmlari o’zaro butun sonlar nisbatida bo’ladi.

D) Bir xil sharoitda turli gazlarning teng hajmlarida molekulalar soni ham bir xil bo’ladi.

2. Normal sharoitda quyidagi gazlarning qaysi biri 5,6 litr hajmni egallaydi?

A) 16g SO₂ B) 17g NH₃ C) 35,5g Cl₂ D) 32g O₂

3. Qaysi gazning diffuziya tezligi (bir xil temperatura va bosimda) sekinroq bo’ladi?

A) H₂ B) He C) N₂ D) CO₂

4. Hajmi 2,8 l bo’lgan gazning massasi 5,5 g bo’lsa, uning nisbiy molekulyar massasi qanchaga teng bo’ladi?

A) 16 B) 55 C) 44 D) 88 E) 32

5. Qaysi holatlardagi gazlarning hajmi

30,1•10²³ ta kislorod molekulasining egallagan hajmiga teng bo’ladi?

1) 220 g CO₂; 2) 112 g CO; 3) 220 g C₃H₈;

4) 177 g Cl₂; 5) 140 g N₂;

A) 1;2;3 B) 1;3;4 C) 1;3;5 D) 2;3;4

6. 1 l havoda n. sh.da molekulalar soni nechta?

A) 54·10²³ B) 0,27·10²³ C) 1,08·10²³ D) 1,5·10²³