1-mavzu. (Test)

33-mavzu.(Test)

1. Avogadro soni deb qanday fizik katta­likka aytiladi?

A) 12 g ugleroddagi atomlar soniga

B) 1 mol moddadagi zarralar soniga

C) 32 g kisloroddagi molekulalar soniga

D) Javoblarning hammasi to‘g‘ri.

2. 32 g massali kislorod moddasining miq­do­ri­ni (mol) aniqlang.

A) 32 B) 16 C) 2 D) 1

3. Massasi 36 mg suvda nechta molekula bor?

A)31023 B)61023 C)61020 D)121020

4. Modda miqdori 225 mol kislorodning massasini aniqang (kg).

A) 14,4 B) 7,2 C) 2,7 D) 6

5. Berilgan moddaning molyar massasi 36 g/mol bo‘lsa, bitta molekulasining massasi necha kilogramm bo‘ladi?

A) 3610-3 B) 3610-23 C) 610-23 D) 610-26

6. 180 mg massali suv tomchisida nechta mo­lekula bor?

A)11018 B)11017 C)31015 D)61021

7. 108 sm3 hajmdagi suvda nechta molekula bor?

A) 1,21024 B) 3,61024 C) 2,41024 D) 61024

8. 32 mg kislorodda nechta molekula bor?

A)121023 B)61020 C)121024 B) 61024

9. 20 g vodoroddagi molekulalar sonini aniqlang.

A)31023 B)1,21023 C)1,21024 D)61024

10. Massasi 0,032 kg kisloroddagi moleku­lalar soni qancha bo‘ladn?

A) 5·1023 B) 3·1023 C) 4·1023 D) 6·1023

11. 450 mol kislorodning massasini aniq­lang (kg).

A) 4,5 B) 9 C) 7,2 D) 14,4

12. 9 g suvda necha mol modda bor?

A) 9 B) 4,5 C) 0,9 D) 0,5

13. Sig‘imi 20 sm3 bo‘lgan stakandagi suvda nechta molekula bor? M=18 g/mol

A) 61028 B) 6,71024 C) 61025 D) 6,71023

14. Massasi 54 g bo‘lgan alyuminiydagi atom­lar soni 197 g oltindagi atomlar sonidan necha marta ko‘p? MAl=27g/mol, Moltin=197g/mol.

A) 1.5 B) 2 C) 2,5 D) 4