@masofatalim
@masofatalim
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May 6, 2020
Kimyo: 30 talik maxsus test. 1-son
javoblari
1. C
2. A
3. D
4. A
5. D
6. A
7. D
8. C
9. B
10. A
11. A
12. C
13. B
14. B
15. D
16. B
17. D
18. C
19. B
20. C
21. C
22. D
23. C
24. A
25. A
26. A
27. D
28. A
29. A
30. A
O’zbekiston Yoshlar ittifoqi tashabbusi bilan tashkil etilgan "
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@masofatalim
May 6, 2020, 02:45
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https://t.me/masofatalim 1 Kimyo
____________________________________
_______________ 1. Dunyodagi eng katta
olmos 1905-yilda Janubiy Afrikada
topilgan “kullinan” olmosidir. Olmos
uglerodning allotropik shakl ko’rinishi
ekanligini bilgan holda 3 kg olmos
tarkibidagi atomlar sonini hisoblang. (NA
= 6∙1023 mol-1 ) A) 1,5∙1025 B) 1,5∙1026 C)
3∙1025 D) 3∙1026 2. Nisbiy atom massa
birligi sifatida qabul qilingan etalonga
mos keluvchi qiymatlarni ko’rsating. 1)
mα( 1H); 2) (1/12)mα( 12C); 3) (1/12)mα;
4) 1/NA. A) 2, 3, 4 B) 2, 4 C) 2 D) 1, 2, 4 3.
Qaysi radikalning ½ moli tarkibidagi
elementar zarrachalar (proton, elektron,
neytron) yig’indisi 63∙NA ga teng? A) fenil
(C6H5 ∙ ) B) siklogeksil (C6H11 ∙ ) C)
Do'stlaringiz bilan baham: |
