1. Atom-molekulyar ta’limot. Kimyoning dastlabki tushunchalari. Molekula bu…

48. 7 ta oltingugurt atomining massasini (gr) aniqlang.

A) 3,72∙10^-23 B) 5,315∙10^-23 C) 4,24∙10^-22 D) 3,72∙10^-22
49. 3 ta azot molekulasining massasini (gr) aniqlang.

A) 1,4∙10^-22 B) 13,6∙10^-23 C) 3,6∙10^-22 D) 2,7∙10^-21
50. 15 ta atomining massasi 6,98∙10^-22 gr bo’lgan elementni aniqlang.

A) N₂ B) Si C) O D) Cr
51. 2 ta azot atomining massasini (gr) aniqlang.

A) 4,65∙10^-23 B) 2,36∙10^-23 C) 3,6∙10^-22 D) 4,2∙10^-24
52. Bitta molekulasining massasi 9,3∙10^-23gr ga teng moddani aniqlang.

A) Fe B) KOH C) NaOH D) Ba
53. Qaysi element absalyut massasi 5,315∙10^-23 gr ga teng?

A) O₂ B) S C) Si D) C
54. Qaysi molekula 4,65∙10^-23gr massaga ega?

A) N₂ B) CO₂ C) NO₂ D) Si
55. 3 ta azot molekulasining massasini aniqlang.

A) 1,4∙10^-22 B) 13,6∙10^-23 C) 3,6∙10^-22 D) 2,7∙10^-21

56. Quyidagi qaysi moddalar uchun atom va molekula tushunchalari bir hil? 1. Kislorod 2. Temir 3. Argon 5. Suv 6. Osh tuzi 7. Azot 8. Ozon 9. Kiremniy A) 1,2,3,5,8 B) 1,5,6,7,8 C) 1,4,7,8 D) 2,3,9 E) 1,2,6,7,8

57. Qaysi atom 4,65∙10^-23gr massaga ega?

A) N₂ B) CO₂ C) NO₂ D) Si
58. Brom atomining absalyut massasini (gr) aniqlang.

A) 13,29∙10^-23 B) 9.3∙10^-23 C) 1,329∙10^-22 D) A va C javoblar to’g’ri
59. Oltingugurt atomining haqiqiy (absalyut) massasini (gr) toping.

A) 5,315∙10²³ B) 6,02∙10²³ C) 5,315∙10^-23 D) 32 gr
60. Bitta molekulasining massasi 9,3∙10^-26 kg ga teng moddani aniqlang.

A) Fe B) KOH C) NaOH D) Ba
61. Yadrosi tarkibida 92 ta proton va 146 ta neytron bo’lgan element qaysi oilaga kirishini aniqlang.

A) d-element B) s-element C) f-element D) p-element
62. Gidrozin molekulasining massasini toping?

A) 32gr B) 5,315∙10^-23gr C) 34gr D) 31gr