Ergashev Xu

A) 152 B) 102 C) 160 D) 144
106. 5,6 gr CO bilan yetarli miqdordagi FeO reaksiyasi natijasida hosil bo`lgan gazning hajmini (l, n.sh) hisoblang. A) 4,48 B) 2,24 C) 6,72 D) 3,36

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Ergashev Xusniddin Baxriddinovich [phone]
107. MeXO₄ molekulyar massasi 183 g/mol ga teng. X₂O₃ va MeSO₃ molekulyar massalari farqi 14 m.a.b ga teng bo`lsa, XSO₄ molekulyar massasini (m.a.b) aniqlang.
A) 151 B) 120 C) 152 D) 160
108. 200 mg xrom gidroksosulfat tarkibidagi xrom va oltigugurt nisbatini aniqlang? A) 1:2 B) 1:1,625 C) 1:1 D) 1:1,5
109. Mis(II) oksidining X gr miqdorini erkin metallgacha qaytarish uchun necha gr CO sarf bo`ladi?
A) 20X/7 B) 7X/40 C) X-52 D) 7X/20
110. Laboratoriyada 26,88 l (n.sh) ammiak olish uchun 25% qo`shimchasi bo`lgan kalsiy gidroksiddan necha gramm zarur bo`ladi?
A) 84,4 B) 59,2 C) 36 D) 44,4
111. Mis(II) nitratning termik parchalanishidan hosil bo`lgan gazlar aralashmasining o`rtacha molekulyar massasini (g/mol) hisoblang. A) 20,7 B) 19,5 C) 43,2 D) 21,6
112. Mis (II) nitratning ko`k rangli kristallogidrati tarkibida kislorodning massa ulushi vodorodnikidan 24 marta katta bo`lsa, bitta tuzga nechta suv molekulsi to`g`ri keladi? A) 2 B) 1 C) 3 D) 4
113. Agar oqsil molekulasining absolyut massasi 83,35∙10^-24 kg ga teng bo`lsa, uning nisbiy molekulyar massasini hisoblang.
A) 50 B) 180000 C) 50000 D) 1800
114. Quyidagi berilgan jadvaldan foydalanib, II birikmaning formulasini toping.
Birikma Birikma formulasi A ning massasi Birikmaning massasi

I A₂B₃ 7 12,4

II ? 3,5 8,9

A) AB₂ B) A₂B₃ C) AB3 D) A₂B
115. MeXO₄ molekulyar massasi 156 gr/mol ga teng. X₂O₃ va MeSO₃ molekulyar massalari farqi 32 m.a.b ga teng bo`lsa, MeSO₄ molekulyar massasini (m.a.b) aniqlang.
A) 136 B) 120 C) 152 D) 160
116. Mis va ruxdan iborat 120 gr qotishmadagi misning massa ulushi 60% bo`lsa, unga necha gramm rux qo`shilganda Cu₃Zn₅ tarkibli qotishmaga aylanadi?
A) 122 B) 140 C) 92 D) 74
117. Natriy va qalaydan iborat 200 gr qotishmadagi natriyning massa ulushi 20,5% bo`lsa, unga necha gramm qalay qo`shilganda Na₂Sn₃ tarkibli qotishmaga aylanadi?
A) 92 B) 41 C) 212 D) 159
118. Mis va oltindan iborat 80 gr qotishmadagi misning massa ulushi 65% bo`lsa, unga necha gramm oltin qo`shilganda Cu₃Au tarkibli birikma olinadi?