1-mavzu. (Test)

34-mavzu.(Test)

1. Zichligi 4,4 kg/m3 bo‘lgan SO2 gazining 1 m3 hajmida qancha molekula bor?

A) 110²⁵ B) 1,110²⁴ C) 410²⁵ D) 610²⁵

2. Massasi 36 g suvdagi molekulalar soni­ni toping.

A) 1210²³ B) 310²³ C) 3,2410²⁴ D) 610²³

3. Kislorod (O2) molekulasining massa qan­chaga teng (kg) bo‘ladi?

A) 5,310^-26 B) 5,310^-23

C) 1910^-23 D) 3,210^-23

4. 6,021026 ta temir atomining massasini hisoblang (kg). Temirning molyar massasi 56 g/mol.

A) 28 B) 280 C) 56 D) 168

5. 5 mol geliyning massasi nimaga teng bo‘ladi?

A) 40 g B) 20 g C) 10 g D) 0,2 kg

6. Hajmi 0,3 l bo‘lgan suvdagi molekulalar sonini aniqlang.

A) 10²⁶ B) 3,310²⁵ C) 3,310²⁶ D) 10²⁵

7. Bir litrlik uchta bankada toza suv, yog‘ va simob olingan. Ulardan qaysi biri 1 kg massaga ega?

A) suv B) yog‘ C) simob D) uchalasi

8. 54 g suvda, 2 g vodorodga nisbatan necha marta ko‘p molekulalar bor?

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

9. Ideal gazning bitta molekulasining mas­sasi 5,310^26 kg ga teng. Shu gazning molyar massasini hisoblang (g/mol).

A) 29 B) 32 C) 8 D) 12

10. Massasi 11,87 kg bo‘lgan qalay bo‘lagi­da qancha atom bor? Qalayning molyar massasi M=118,7 g/mol.

A) 6·10²⁴ B) 6·10²³ C) 6·10²⁶ D) 6·10²⁵

11. Massasi 310^-5 g bo‘lgan suv tomchisida nech­ta molekula bor?

A) 10¹⁸ B) 10²¹ C) 210²⁸ D) 510¹⁸

12. Agar misning har bir atomiga bittadan erkin elektron to‘g‘ri kelsa, tok tashuvchi elek­tronlar konsentratsiyasi (m3) qanday? =8,9103 kg/m3; M=64103 kg/mol.

A) 8,310²⁸ B) 6,4.10²³ C) 4,510²⁸ D) 3,110²³

13. To’rt mol suv qancha hajmni egallaydi. Tugri javobni toping (sm3)?

A) 2 B) 72 C) 64 D) 18

14. Massalari teng bo‘lgan vodorod va kislo­rod­dagi molekulalar soni necha marta farq qiladi? M(O2)= 32 g/mol; M(N2)=2 g/mol.

A) 64 B) 32 C) 16 D) 18