14. Tarkibida 1,5•1023 ta kislorod atomi bo‘lgan magniy gidroksidning massasini aniqlang.
A) 5,71 B) 6,5 C) 7,2 D) 14,5
15. 150 g NH3 dagi azot atomlarining soni 150 g ammoniy sulfatdagi azot atomlarining sonidan necha marta ko‘p?
A) 2,3 B) 3,1 C) 3,88 D) 11,65
16. 100 g NH3 dagi vodorod atomlarining soni 100 g ammoniy sulfatdagi vodorod atomlarining sonidan necha marta ko‘p?
A) 2,3 B) 2,91 C) 3,5 D) 11,65
17. 1,5 mol CaCO3 da nechta Ca va O atomlari bor. A) 9,03•10-23 va 27,09•10-23
B) 6,03•10-23 va 4,03•10-24
C) 12,03•10-23 va 9,03•10-23
C) 24,08•10-23 va 9,03•10-23
18. Noma’lum massali malaxitdagi molekulalar soni bilan atomlar sonining farqi 8,127·1023 ga teng bo’lsa, malaxit massasini (g) toping.
A)42,18 B)33,3 C)22,2 D)30
19. Noma’lum massali malaxitdagi( (CuOH)2 CO3) molekulalar soni bilan atomlar sonining farqi 13,545·1023 ga teng bo’lsa, malaxit massasini (g) toping.
A) 93,24 B) 42,18 C) 55,5 D) 30
*****************************************
<>
1. 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
2. 3,5 mol kadmiy tarkibida nechta atom mavjud?
A) 1,2•1024 B)2,4•1024 C) 6,0•1023 D) 2,1•1024
3. 0,04 mol litiy oksiddagi litiy atomlari sonini toping.
A) 4,8 •1022 B) 6,02 •1023 C)2,4 •1022 D) 3 •1023
4. 2 mol suvda nechta vordorod atomi bor?
A) 6 • 1024 B) 12 • 1023 C) 24 •1023 D) 3 • 1024
5. 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
6. Massasi 340 g bo‘lgan sulfat kislota kristallogidratida, kislota molekulalarining suvmolekulalariga 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
7.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
8. Bir tomchi suv (v=0,03 ml) da nechta molekula bo‘ladi?
A) 8•1020 B) 1•1021 C ) 6•1023 D) 2•1020
9. 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
10. Bir tomchi etil spirti 0,033 ml bo‘lsa, 30 tomchi spirtda nechta molekula bo‘ladi? (ρ=0,90 g/ml)
A) 11,66 •1021 B) 3,01•1021 C)6•1023 D) 2•1020
11. 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
12. 0,04 mol natriy oksiddagi natriy atomlari sonini toping.
A) 4,8 •1022 B) 6,02 •1023
C) 2,4 •1022 D) 3 •1023
13. 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
14. Hajmi 1l bo‘lgan suv( ) tarkibidagi molekulalar soni nechta?
A) 6,02•1023 B) 3,34•1024
C) 3,34•1025 D) 6,02•1026
15. 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
16. Zarrachalari soni Avogadro sonidan 4 marta kam bo`lgan moddani toping.
A) 6gr magniy B) 1gr vadarod
C)9gr kislarod D) 16gr kalsiy
1.Atomlar soni teng bo`lgan argon, azot va silan gazlari aralashmasi bor. Shu aralashmaning 1,7 molidagi argonning (n.sh.) dagi xajmini (l) toping. (J:22,4)
Do'stlaringiz bilan baham: |