1. Molekulalarning massasi. Modda miqdori. 1m a. b 667*10

1.Molekulalarning massasi .Modda miqdori .
1m.a.b =1.667*10^-27 kg
1.Misning nisbiy atom massasi 64m.a.b . Bitta atomining massasini toping (kg)?
A)1.0669*10^-25 B)1.0669*10^-21 C)1.0669*10^-29
2. Geliyning nisbiy atom massasi 4m.a.b .Uning bitta atomining massasini toping (kg)?
A)6.668*10^-27 B) 0.6668*10^-28 C) 6.668*10^-24
3.Bitta uran atomining massasi3.967*10^-25*kg uning nisbiy atom massasini toping
(m.a.b)?
A)198 B)238 C)230
4.Havo molekulasining massasini aniqlang(kg) .Havo uchun M=29g/mol
A)4.81*10^-26 B) 4.81*10^-28 C) 6.81*10^-26
5.Platinaning atom massasini aniqlang (kg).Platinaning M=195g/mol
A)32.39*10^-26 B)33.29*10^-28 C) 35.36*10^-26
6.Molekulalar soni 1.806*10²³ ta bo’lgan moddaning modda miqdorini toping (mol) . Avogadro soni N_A=6.02*10²³ 1/mol
A)0.6 B) 0.5 C) 0.3
7.Nitrat kilota (H₂NO₃) ning 64 g massasida nechta kislorod atomi mavjud? A(H)=1 m.ab, A(N)=14 m.a.b, A(O)=16 m.a.b, Na=6*10²³ mol^-1.
A) 1, 8 * 10²⁴ B) 6 * 10²³ C) 1, 8 * 10²³ D) 6 * 10²⁴.
8.Metanning yonish reaksiyasi

kabi amalga oshadi. Bunda 16 g metan gazi yonganda qanday massadagi karbonat angidrid gazi ajralib chiqadi (g)? M(CH₄)=16 g/mol, M(CO₂)=44 g/mol, Na=6-10²³ mol^-1.
A) 22 B) 44 C) 88 D) 16.
9. 20 molmol sulfat (H₂SO​₄​​) kisotadagi atomlar soni 10 mol nitrat kislotadagi (HNO​₃​​) atomlar sonidan necha marta ko‘p?
10. .16 g kislorodning modda miqdorini aniqlang(mol)? μ=32g/mol.
A) 0,5. B) 1. C) 2. D) 16.
11. Massasi m bo’lgan gazning molekulalar soni N bo’lsa, uning molyar massasi qanday? N_A – avagadro soni.
A) NmNA. B) A mN N . C) A m N N . D) NA mN . 12. Qandaydir gazning bitta molekulasining massasi 4,8∙10-26 kg. bu gazning molyar massasini aniqlang (g/mol). NA=6∙1023 mol-1 .
A) 8. B) 32. C) 12. D) 29. 13.Molyar massa – bu …
A) hajmi 1 m3 , temperaturasi T=273 k bo’lgan moddaning massasi.
B) bitta molekulaning massasiga teng bo’lgan grammlarda ko’rsatila digan moddaning massasi.
C) berilgan modda atomining massasini uglerod atomining 1/12 qismiga nisbati. D) moddaning NA=6∙1023 ta molekulasining massasi.
14. 0,036 kg suvda nechta molekula mavjud? NA=6∙1023 mol-1
A) 3∙1023. B) 12∙1023. C) 6∙1020. D) 6∙1023 .
15. Hajmi 200 sm³ bo’lgan stakanga nechta suv molekulasi sig’adi? μ=18∙10-3 kg/mol; N_A=6∙1023 mol-1 .
A) 6,5∙1028. B) 1,8∙1024. C) 6∙1025. D) 6,7∙1024 .
16. Massalari teng bo’lgan kislorod va vodorodning molekula lar soni necha marta farq qiladi? Μ(O2)=32∙10-3g/mol. Μ(H2)=2∙10-3g/mol.
A) 64. B) 32. C) 18. D)16.
17. Agar 6s da 18 mg suv bug’lansa, har sekundda o’rtacha nechta suv molekulasi suv sirtidan uchib ketadi?
A) 1∙1023. B) 1∙1020. C) 4∙1019. D) 2∙1018 .
18. Avagadro soni nima?
1) 12 g ugleroddagi atomlar soni. 2) 1 mol moddadagi zarralar soni; 3) 32 g ugleroddagi molekulalar soni; 4) 2 g vodoroddagi molekulalar soni.
A) faqat 1. B) faqat 2 . C) faqat 3. D) 1-4.
19. Temirning 3,01∙1023 atomining massasini (kg) aniqlang? Temirning molyar massasi 56 g/mol, N_A=6∙10²³ mol^-1
A) 56. B) 5,2. C) 6. D) 5,8.
20. 1 kmol ideal gaz 0,5 MPa bosim va 52⁰ C temperaturada qanday hajmni (m3 ) egallaydi? R=8,31 J/(molK).
A) 5,4. B) 5,2. C) 6. D) 5,8.

2.Ideal gaz. MKN ning asosiy tenglamasi