Mol-modda miqdori(maruza)

79. 0,25 mol kaliyxrom (III) sulfat qo’sh tuzi dissotsilanganda qancha mol ionlar hosil bo’ladi? A) 4 mol B) 2 mol C) 1 mol D) 0,5 mol
80. 1/5 mol kaliyxrom (III) sulfat qo’sh tuzi dissotsilanganda qancha x/y mol ionlar hosil bo’ladi? A) 2/3 B) 2/5 C) 3/5 D) 8/5
81. 666 gr Cu_xCO₃(OH)_x moddadan 1,5x mol olingan bo’lsa, shu birikma tarkibidagi misni massasini toping. A) 64 gr B) 128 gr C) 192 gr D) 384 gr
82. 640 gr Cu_1,5xCO₃(OH)_2x moddadan x mol olingan bo’lsa, shu moddaning mol miqdori shunday massadagi Cu_xCO₃(OH)_x dan necha molga farq qiladi?
A) 1 B) 0,5 C) 0,88 D) 1,44
83. 1 mol suv tarkibidagi maksimal vodorod bog’lar sonini toping. A) 6,02 ⋅ 10₂₃ B) 12,04 ⋅ 10₂₃ C) 36,12 ⋅ 10₂₃ D) 48,16 ⋅ 10₂₃
84. Tarkibida eng ko’pi bilan 6020 ta vodorod bog’i bo’lgan suv molekulalarining molini toping.
A) 500 mol B) 5 ⋅ 10₂₁ C) 5 ⋅ 10_-21 D) 1 ⋅ 10_-20
85. 36 g suv molekulalardagi barcha kimyoviy bog’lar sonini toping. A) 6,02 ⋅ 10₂₃ B) 12,04 ⋅ 10₂₃ C) 36,12 ⋅ 10₂₃ D) 48,16 ⋅ 10₂₃
86. 54 ml suvning ustiga (H₂O)_n suv tomchilatilganda, hosil bo’lgan suvdagi barcha kimyoviy bog’lar soni
108,36 ⋅ 10₂₃ ta bo’lgan bo’lsa, n ni qiymatini va necha mol suv tomchilatilganini aniqlang.
A) 36,12 ⋅ 10₂₃; 6 mol B) 24,08 ⋅ 10₂₃; 1 mol C) 9,03 ⋅ 10₂₃; 1,5 mol D) 48,16 ⋅ 10₂₃; 4 mol
87. Me₊₂ ion hosil qiladigan uchta metallning atom massalari 3 : 5 : 7 nisbatida, atomlar soni nisbati esa 4 : 2
: 1 ga teng. Agar metallar aralashmasining massasi 2,32 gr mollari yigindisi esa 0,07 mol bo’lsa, eng og’ir
metallni aniqlang. A) Mg B) Ca C) Cu D) Fe
88. Me₊₂ ion hosil qiladigan uchta metallning atom massalari 4 : 3 : 7 nisbatida, atomlar soni nisbati esa
2,5 : 2 : 1 ga teng. Agar metallar aralashmasining massasi 7,36 gr mollari yigindisi esa 0,11 mol bo’lsa, eng
og’ir metallni massasini (g) aniqlang.
A) 1,92 g B) 2,24 g C) 2,8 g D) 3,2 g
89. 57 g H₂SO₄ ⋅ 0,2SO₃ tarkibli oleumni necha mol sulfat kislota va uning angidridi hosil qiladi? A) 0,1 mol B) 0,5 mol C) 0,6 mol D) 1 mol
90. 57 g H₂SO₄ ⋅ 0,2SO₃ tarkibli oleumni necha mol sulfat kislota va uning angidridi hosil qiladi? A) 0,1 mol B) 0,5 mol C) 0,6 mol D) 1,2 mol
91. 58,4 g H₂SO₄ ⋅ 0,6SO₃ tarkibli oleumni necha mol sulfat kislota va uning angidrid aralashmasi hosil qiladi?
A) 1,6 mol B) 1 mol C) 0,8 mol D) 0,64 mol
92. 22,08 g 2H₂SO₄ ⋅ SO₃ tarkibli oleumni necha mol sulfat kislota va uning angidridi hosil qiladi?
A) 0,24 mol B) 0,35 mol C) 0,66 mol D) 3 mol
93. 39,2 g sulfat kislota tarkibidagi atomlar soniga teng bo’lgan sulfat angidridni shu kislotada eritilganda qanday tarkibli oleum hosil bo’ladi?
A) H₂SO₄ ⋅ 0,6SO₃ B) H₂SO₄ ⋅ 0,8SO₃ C) H₂SO₄ ⋅ 1,75SO₃ D) H₂SO₄ ⋅ 1,8SO₃
94. 9,8 g sulfat kislota tarkibidagi atomlar sonidan 2,91 marta kam atom saqlagan sulfat angidridni shu
kislotada eritilganda qanday tarkibli oleum hosil bo’ladi?
A) H₂SO₄ ⋅ 0,6SO₃ B) H₂SO₄ ⋅ 0,8SO₃ C) H₂SO₄ ⋅ 1,75SO₃ D) H₂SO₄ ⋅ 1,8SO₃