Kimyo masala yechish. 1- qism

4. Quyidagi moddalar nisbiy molekular massalarini toping.
1.Fe₂O₃ 2.Fe₃O₄ 3.CaCO₃ 4.Na₂SO₄ 5.H₂SO₃ 6.HNO₂ 7.P₂O₅ 8.Cu(NO₃)₂ 9.CaSO₄ 10.Al(OH)₃ 11.SiO₂ 12.Ca(OH)₂ 13.Al₂O₃ 14.KNO₃ 15.Mg₃(PO₄)₂ 16.KClO₃ 17.KMnO₄ 18.KCl 19. FeO·Fe₂O₃ 20. CaCl₂·2H₂O


III. Molar massa.Modda miqdori.Modda massasi.
Absolyut massa topish.

1.Modda massasi berilganda modda miqdorini topish fo’rmulasi: n= m\Mr
2.Modda miqdori berilganda modda massasini topish ­­­fo’rmulasi: m=n* Mr
3.Modda massasi berilganda molekulyar massani topish fo’rmulasi: Mr=m\n
4.Absolyut massani topish fo’rmulasi: mab=Mr\NA
Namuna:
1) Ber: Fo’r: Yech:
n=0.5 mol m=n*Mr m=0.5mol *40gr\mol = 20 gr
Mr(Ca)=40gr\mol J: m(Ca)=20gr
----------------------------------------
m-?


2) Ber: Fo’r: Yech:
m=10gr n=m\Mr n= 10gr \ 40gr|mol= 0.25 mol
Mr(Ca)=40gr\mol J: n(Ca)=0.25mol
--------------------------------------------------------------
n-?


3) Ber: Fo’r: Yech:
n=0.5mol Mr=m\n Mr= 6gr \ 0.5mol = 12gr|mol
m= 6 gr J:Mr(X)=12gr\mol (C)-uglerod.
---------------------------------------
Mr -?


4) Ber: Fo’r: Yech:
Mr(H2SO4)=98 gr\mol m_ab=Mr . m.a.b mab₌98 gr\mol : 6.02·10²³ = 1,63*10^-24
N_A=6.02·10^{23
-------------------------------------} m_ab=Mr\ N_A
m_ab=?

1. 0.5 mol kalsiyni massasini toping.

2. 1.5 mol magniyni massasini toping.
3. 0.5 mol uglerodning massasini toping
4. Nom’lum oddiy moddanning 0.5 moli 6 g bo’lsa u qaysi modda
5. 10 g kalsiy modda miqdori qanday bo’ladi
6. Massasi 6.4 g bo’lgan kislorod(O₂) modda miqdorini toping
7. 2.5 mol suv massasi necha gramm bo’ladi
8. 21,2 g soda (Na₂CO₃) modda miqdorini toping
9. 90 g suv modda miqdorini toping
10. Modda miqdori,molar massa va modda massani birligini yozing
11. 0.25 mol natriy gidroksid(NaOH) massasi necha gramm bo’ladi ?
12. 4 mol kalsiy gidroksid(Ca(OH)₂) massasini toping
13. Noma’lum oddiy moddaning 0.5 molining massasi 12 g bo’lsa u qaysi modda ?
14. Noma’lum oddiy moddaning 0.125 molining massasi 7 g bo’lsa u qaysi modda ?
15. 10 g kalsiy karbonatda(CaCO₃) necha mol modda bor
16. Necha gramm suvning modda miqdori 0.3 mol bo’ladi ?
17. Necha mol sulfat kislotaning(H₂SO₄) massasi 19.6 g boladi ?
18. Qaysi murakkab moddaning 10 moli 1000 g bo’ladi ?
19. Modda miqdori ma’lum bo’lganda modda massasini toppish formulasini yozing
20. Modda miqdori va modda massasidan foydalanib molyar massani topish formulasini yozing
21. 0.2 mol sulfat kislota massasi necha g bo’ladi
22. Massasi 49 g bo’lgan sulfat kislotasi modda miqdorini toping
23. Necha gramm karbonat angidrid modda miqdori 0.75 mol boladi
24. Noma’lum oddiy moddaning 0.2 moli 11.2 g bo’lsa shu modda qaysi modda
25. 1.3 mol so’ndrilgan ohak(Ca(OH)₂) massasi necha gramm bo’ladi ?
26. Necha g mis kuporosi (CuSO₄*5H₂O) modda miqdori 0.2 mol boladi ?
27. Noma’lum murakkab moddaning 0.1 moli 1.8 gramm bo’lsa noma’lum moddani toping
28. 126 gramm nitrat kislotadagi(HNO₃) modda miqdorini toping
29. Necha mol kuydirilgan ohakning(CaO) massasi 11.2 gramm bo’ladi ?
30. Karbonat angidridning 5 moli necha g bo’ladi ?
31. Agar alyuminiydan yasalgan qoshiqning massasi 13.5 g bo’lsa,unda qancha miqdor modda bor ?
32. Natriy gidroksidning 10 grammidagi modda miqdorini toping
33. Noma’lum XO moddaning 0.25 moli 10 g bolsa X elementni toping
34. 51 g Noma’lum X₂O₃ moddaning miqdori 0.5 mol bo’lsa X elementni toping
35. 60 gramm uglerodda necha gramm-atom modda bor ?
36. 126 gramm nitrat kislotada necha gramm-molekula modda bor ?
37. 28 g temirda necha gramm-atom modda bor ?
38. 196 g sulfat kislotada necha gramm-molekula modda bor ?
39. Modda miqdori 0.5 mol bo’lgan kalsiy nitrat (Ca(NO₃)₂) massasini toping
40. 1.5 mol uglerodning massasini toping
41. Nom’lum oddiy moddanning 0.5 moli 12g bo’lsa u qaysi modda
42. 20 g kalsiy modda miqdori qanday bo’ladi
43. Massasi 64 g bo’lgan kislorod(O₂) modda miqdorini toping
44. 5.5 mol suv massasi necha gramm bo’ladi
45. 22.4 g soda (Na₂CO₃) modda miqdorini toping
46. 180 g suv modda miqdorini toping
47. Modda miqdori,molar massa va modda massani birligini yozing
48. 2.5 mol natriy gidroksid(NaOH) massasi necha gramm bo’ladi ?
49. 5 mol kalsiy gidroksid(Ca(OH)₂) massasini toping
50. Noma’lum oddiy moddaning 0.5 molining massasi 16 g bo’lsa u qaysi modda ?
51. Noma’lum oddiy moddaning 0.125 molining massasi 14 g bo’lsa u qaysi modda ?
52. 100 g kalsiy karbonatda(CaCO₃) necha mol modda bor
53. Necha gramm suvning modda miqdori 0.8 mol bo’ladi ?
54. Necha mol sulfat kislotaning(H₂SO₄) massasi 196 g boladi ?
55. Qaysi murakkab moddaning 1 moli 100 g bo’ladi ?
56. Modda miqdori ma’lum bo’lganda modda massasini toppish formulasini yozing
57. Modda miqdori va modda massasidan foydalanib molyar massani topish formulasini yozing
58. 0.2 mol sulfat kislota massasi necha g bo’ladi
59. Massasi 98 g bo’lgan sulfat kislotasi modda miqdorini toping
60. Necha gramm karbonat angidrid modda miqdori 1.5 mol boladi
61. Noma’lum oddiy moddaning 0.4 moli 22.4 g bo’lsa shu modda qaysi modda
62. 1.5 mol so’ndrilgan ohak(Ca(OH)₂) massasi necha gramm bo’ladi ?
63. Necha g mis kuporosi (CuSO₄*5H₂O) modda miqdori 2 mol boladi ?
64. Noma’lum murakkab moddaning 0.2 moli 3.6 gramm bo’lsa noma’lum moddani toping
65. 63 gramm nitrat kislotadagi(HNO₃) modda miqdorini toping
66. Necha mol kuydirilgan ohakning(CaO) massasi 56 gramm bo’ladi ?
67. Karbonat angidridning 3 moli necha g bo’ladi ?
68. Agar alyuminiydan yasalgan qoshiqning massasi 27 g bo’lsa,unda qancha miqdor modda bor?
69. Natriy gidroksidning 80 grammidagi modda miqdorini toping
70. Noma’lum XO moddaning 0.5 moli 20 g bolsa X elementni toping
71. 102 g Noma’lum X₂O₃ moddaning miqdori 1 mol bo’lsa X elementni toping
72. 24 gramm uglerodda necha gramm-atom modda bor ?
73. 63 gramm nitrat kislotada necha gramm-molekula modda bor ?
74. 56 g temirda necha gramm-atom modda bor ?
75. 4.9 g sulfat kislotada necha gramm-molekula modda bor ?
76. Modda miqdori 1.5 mol bo’lgan kalsiy nitrat (Ca(NO₃)₂) massasini toping
77. 0.25 mol kalsiyni massasini toping.
78. 2.5 mol magniyni massasini toping.
79. 4.5 mol uglerodning massasini toping
80. Nom’lum oddiy moddanning 1 moli 12 g bo’lsa u qaysi modda
81. 20g kalsiy modda miqdori qanday bo’ladi
82. Massasi 3.2 g bo’lgan kislorod(O₂) modda miqdorini toping
83. 4.5 mol suv massasi necha gramm bo’ladi
84. 63.6 g soda (Na₂CO₃) modda miqdorini toping
85. 180 g suv modda miqdorini toping
86. 2.5 mol natriy gidroksid(NaOH) massasi necha gramm bo’ladi ?
87. 0.4 mol kalsiy gidroksid(Ca(OH)₂) massasini toping
88. Noma’lum oddiy moddaning 1 molining massasi 24 g bo’lsa u qaysi modda ?
89. Noma’lum oddiy moddaning 0.375 molining massasi 21 g bo’lsa u qaysi modda ?
90. 1 g kalsiy karbonatda(CaCO₃) necha mol modda bor
91. Necha gramm suvning modda miqdori 0.8 mol bo’ladi ?
92. Necha mol sulfat kislotaning(H₂SO₄) massasi 196 g boladi ?
93. Qaysi murakkab moddaning 0.1 moli 10 g bo’ladi ?
94. 1.2 mol sulfat kislota massasi necha g bo’ladi
95. Massasi 980 g bo’lgan sulfat kislotasi modda miqdorini toping
96. Necha gramm karbonat angidrid modda miqdori 7.5 mol boladi
97. Noma’lum oddiy moddaning 0.6 moli 33.6 g bo’lsa shu modda qaysi modda
98. 1.5 mol so’ndrilgan ohak(Ca(OH)₂) massasi necha gramm bo’ladi ?
99. Necha g mis kuporosi (CuSO₄*5H₂O) modda miqdori 2 mol boladi ?
100. Noma’lum murakkab moddaning 1 moli 18 gramm bo’lsa noma’lum moddani toping
101. 12.6 gramm nitrat kislotadagi(HNO₃) modda miqdorini toping
102. Necha mol kuydirilgan ohakning(CaO) massasi 56 gramm bo’ladi ?
103. Karbonat angidridning 3 moli necha g bo’ladi ?
104. Agar alyuminiydan yasalgan qoshiqning massasi 40.5 g bo’lsa,unda qancha miqdor modda bor
105. Natriy gidroksidning 80 grammidagi modda miqdorini toping
106. Noma’lum XO moddaning 1 moli 40 g bolsa X elementni toping
107. 102 g Noma’lum X₂O₃ moddaning miqdori 1 mol bo’lsa X elementni toping
108. 30 gramm uglerodda necha gramm-atom modda bor ?
109. 12.6 gramm nitrat kislotada necha gramm-molekula modda bor ?
110. 84 g temirda necha gramm-atom modda bor ?
111. 1.96 g sulfat kislotada necha gramm-molekula modda bor ?
112. Modda miqdori 2.5 mol bo’lgan kalsiy nitrat (Ca(NO₃)₂) massasini toping
113. 4,5 mol uglerodning massasini toping
114. Nom’lum oddiy moddanning 1 moli 4g bo’lsa u qaysi modda
115. 2 g kalsiy modda miqdori qanday bo’ladi
116. Massasi .64 g bo’lgan kislorod(O₂) modda miqdorini toping
117. 0.05 mol suv massasi necha gramm bo’ladi
118. 106 g soda (Na₂CO₃) modda miqdorini toping
119. 1800g suv modda miqdorini toping
120. 0.05 mol natriy gidroksid(NaOH) massasi necha gramm bo’ladi ?
121. 2.5 mol kalsiy gidroksid(Ca(OH)₂) massasini toping
122. Noma’lum oddiy moddaning 1 molining massasi 32 g bo’lsa u qaysi modda ?
123. Noma’lum oddiy moddaning molining massasi 14 g bo’lsa u qaysi modda ?
124. 100 g kalsiy karbonatda(CaCO₃) necha mol modda bor
125. Necha gramm suvning modda miqdori 0.8 mol bo’ladi ?
126. Necha mol sulfat kislotaning(H₂SO₄) massasi 196 g boladi ?
127. Qaysi murakkab moddaning 1 moli 100 g bo’ladi ?
128. Modda miqdori ma’lum bo’lganda modda massasini toppish formulasini yozing
129. Modda miqdori va modda massasidan foydalanib molyar massani topish formulasini yozing
130. 0.2 mol sulfat kislota massasi necha g bo’ladi
131. Massasi 98 g bo’lgan sulfat kislotasi modda miqdorini toping
132. Necha gramm karbonat angidrid modda miqdori 1.5 mol boladi
133. Noma’lum oddiy moddaning 0.4 moli 22.4 g bo’lsa shu modda qaysi modda
134. 1.5 mol so’ndrilgan ohak(Ca(OH)₂) massasi necha gramm bo’ladi ?
135. Necha g mis kuporosi (CuSO₄*5H₂O) modda miqdori 2 mol boladi ?
136. Noma’lum murakkab moddaning 0.2 moli 3.6 gramm bo’lsa noma’lum moddani toping
137. 63 gramm nitrat kislotadagi(HNO₃) modda miqdorini toping
138. Necha mol kuydirilgan ohakning(CaO) massasi 56 gramm bo’ladi ?
139. Karbonat angidridning 3 moli necha g bo’ladi ?
140. Agar alyuminiydan yasalgan qoshiqning massasi 27 g bo’lsa,unda qancha miqdor modda bor?
141. Natriy gidroksidning 80 grammidagi modda miqdorini toping
142. Noma’lum XO moddaning 0.5 moli 20 g bolsa X elementni toping
143. 102 g Noma’lum X₂O₃ moddaning miqdori 1 mol bo’lsa X elementni toping
144. 24 gramm uglerodda necha gramm-atom modda bor ?
145. 63 gramm nitrat kislotada necha gramm-molekula modda bor ?
146. 56 g temirda necha gramm-atom modda bor ?
147. 4.9 g sulfat kislotada necha gramm-molekula modda bor ?
148. Modda miqdori 1.5 mol bo’lgan kalsiy nitrat (Ca(NO₃)₂) massasini toping
149. 0.49 g sulfat kislotada necha gramm-molekula modda bor ?
150. Modda miqdori 0.15 mol bo’lgan kalsiy nitrat (Ca(NO₃)₂) massasini toping.
151. 80 gr natriy gidroksid (NaOH) ni modda miqdor(mol)ni toping.
152.10 gr vodarod (H₂) ni modda miqdorini toping.
153. 740 gr kalsiy gidroksid (Ca(OH)₂) ni molini hisoblab toping.
154. 8,5 gr natriy nitrat (NaNO₃) ning modda miqdori (mol) ni hisoblang.
155. 15 gr kalsiy karbonat (CaCO₃) ning modda miqdori (mol) ni hisoblang.
156. 16 gr sulfat angidrid (SO₃) ning modda miqdori (mol) ni hisoblang.
157. 9,8 gr mis(II)-gidroksid (Cu(OH)₂ ni modda miqdori (mol) ni hisoblang.
158. 3,9 gr benzol (C₆H₆) ning modda miqdorini (mol) hisoblang.
159. 490 gr ortofosfat (H₃PO₄) kislotaning modda miqdorini (mol) toping .
160. 49 gr sulfat kislota (H₂SO­₄) ni modda miqdor (mol) ni toping.
161. 0,5 mol o’yuvchi natriy (NaOH) ni massasini gr toping.
162. 3 mol natriy sulfat (Na₂SO₄) ni massasini gr toping.
163. 0,1 mol ammoniy fosfat ( (NH₄)₃PO₄) ning massasini gr hisoblang.
164. 0,25 mol kaliy gidroksid (KOH) ning massasini gr hisoblang.
165. 3,5 mol mis kuporosi (CuSO₄∙5H₂O) ning massasini gr hisoblang.
166. 5 mol sulfat kislota (H₂SO₄) ning massasini gr hisoblang.
167. 4 mol sirka kislota (CH₃COOH) necha gr keladi?
168. 6 mol anilin (C₆H₅NH₂) necha gr keladi?
169. 15 mol natriy peroksid (Na₂O₂) necha gr keladi
170. 3,5 mol natriy fosfat (Na₃PO₄) tuzi necha gr keladi?
171. 1,75 mol kislorod (O­₂) necha gr keladi.
172. 3,3 mol so’ndirilmagan ohak (CaO) ning massasini gr toping.
173. 5,2 gr nomalum modda 0,2 mol kelsa,nomalum modda molekulyar massasini toping.
174. 4,9 gr nomalum modda 0,05 mol kelsa,shu moddani Mr ni toping.
175. 39 gr nomalum modda 0,5 mol kelsa,shu moddani massasini toping.
176. Nomalum moddaning 0,25 moli 14 gr kelsa,shu moddaning Mr ni toping.
177. 27,3 gr nomalum modda 0,35 mol bo’lsa,moddaning Mr ni toping.
178. 0,3 mol moddaning massasi 36 gr bo’lsa,shu moddaning molekulyar massasini toping.
179. Berk idishga 14 gr yarim mol gaz berkitilgan. Shu idish ichidagi noma’lum gaznining molekulyar massasini aniqlang.
180. 36 gr nomalum moddaning 0.45 molining molekulyar massasini toping.
181. Berk idishga 22 gr yarim mol gaz berkitilgan. Shu idish ichidagi noma’lum gazni aniqlang.
182. 18,9 gr nomalum moddaning miqdori 0,3 mol bo’lsa,shu moddaning molekulyar massasini toping.
183. 0.8 gr natriy gidroksid (NaOH) ni modda miqdor(mol)ni toping.
184.0.1 gr vodarod (H₂) ni modda miqdorini toping.
185. 0.74 gr kalsiy gidroksid (Ca(OH)₂) ni molini hisoblab toping.
186. 85 gr natriy nitrat (NaNO₃) ning modda miqdori (mol) ni hisoblang.
187.1.5 gr kalsiy karbonat (CaCO₃) ning modda miqdori (mol) ni hisoblang.
188. 1.6 gr sulfat angidrid (SO₃) ning modda miqdori (mol) ni hisoblang.
189.98 gr mis(II)-gidroksid (Cu(OH)₂ ni modda miqdori (mol) ni hisoblang.
190. 39 gr benzol (C₆H₆) ning modda miqdorini (mol) hisoblang.
191. 4.90 gr ortofosfat (H₃PO₄) kislotaning modda miqdorini (mol) toping .
192.4.9 gr sulfat kislota (H₂SO­₄) ni modda miqdor (mol) ni toping.
193. 5 mol o’yuvchi natriy (NaOH) ni massasini gr toping.
194. 0.3 mol natriy sulfat (Na₂SO₄) ni massasini gr toping.
195. 1 mol ammoniy fosfat ( (NH₄)₃PO₄) ning massasini gr hisoblang.
196. 2.5 mol kaliy gidroksid (KOH) ning massasini gr hisoblang.
197. 0.35 mol mis kuporosi (CuSO₄∙5H₂O) ning massasini gr hisoblang.
198. 0.5 mol sulfat kislota (H₂SO₄) ning massasini gr hisoblang.
199. 0.4 mol sirka kislota (CH₃COOH) necha gr keladi?
200. 0.6 mol anilin (C₆H₅NH₂) necha gr keladi?
201. 1.5 mol natriy peroksid (Na₂O₂) necha gr keladi?
202. 0.35 mol natriy fosfat (Na₃PO₄) tuzi necha gr keladi?
203. 17.5 mol kislorod (O­₂) necha gr keladi.
204. 11.2 mol so’ndirilmagan ohak (CaO) ning massasini gr toping.
205. 52gr nomalum modda 1 mol kelsa,nomalum modda molekulyar massasini toping.
206. 49 gr nomalum modda 0,5 mol kelsa,shu moddani Mr ni toping.
207. 390 gr nomalum modda 5 mol kelsa,shu moddani massasini toping.
208. nomalum moddaning 2.5 moli 110 gr kelsa,shu moddaning Mr ni toping.
209. 150 gr nomalum modda 1.5 mol bo’lsa,moddaning Mr ni toping.
300. 3 mol moddaning massasi 84 gr bo’lsa,shu moddaning molekulyar massasini toping.
301. Berk idishga 28 gr 1 mol gaz berkitilgan. Shu idish ichidagi noma’lum gaznining molekulyar massasini aniqlang.
302. 360 gr nomalum moddaning 4.5 molining molekulyar massasini toping.
303. Berk idishga 2.2 gr 0.05 mol gaz berkitilgan. Shu idish ichidagi noma’lum gazni aniqlang.
304. 189 gr nomalum moddaning miqdori 3 mol bo’lsa,shu moddaning molekulyar massasini toping.
305. 0.6 gr nomalum moddaning miqdori 0.01 mol bo’lsa, shu moddaning molekulyar massasini taping. 306.Sulfat kislatani absolyut massasini toping.( mab=?)
307. Cl2 molekulasini absolyut massasini toping.( mab=?)
308. HCl absolyut massasini toping.( mab=?)
309. Fosfat kislatani absolyut massasini toping.( mab=?)
310.Sulfit kislatani absolyut massasini toping.( mab=?)
311.Fosfit kislatani absolyut massasini toping.( mab=?)
312.Permanganat kislatani absolyut massasini toping.( mab=?)
313.CO ning absolyut massasini toping.( mab=?)
314. Sirka kislataning absolyut massasini toping.( mab=?)
315.Nitrat kislataning absolyut massasini toping.( mab=?)
316.Nitrit kislataning absolyut massasini toping.( mab=?)
317.Ortafosfat kislataning absolyut massasini toping.( mab=?)
318.Pirafosfat kislataning absolyut massasini toping.( mab=?)
319.Manganat kislataning absolyut massasini toping.( mab=?)
320.HClO ning absolyut massasini toping.( mab=?).
321. Modda miqdori 1.1 mol bo'lgan H2O ning massasini toping?
A) 19.8 B) 27.72 C) 15.84 D) 11.88
322. Modda miqdori 0.2 mol bo'lgan H2O ning massasini toping?
A) 5.04 B)2.88 C) 2.16 D) 3.6
323. Modda miqdori 2.8 mol bo'lgan H2O ning massasini toping?
A) 70.56 B) 50.4 C) 40.32 D) 30.24
324. Modda miqdori 1 mol bo'lgan Na2SO4ning massasini toping?
A) 142 B) 198.8 C) 113.6 D) 85.2
325. Modda miqdori 2.7 mol bo'lgan HNO3 ning massasini toping?
A) 238.14 B) 170.1 C) 136.08 D) 102.06
326. Modda miqdori 2.9 mol bo'lgan HNO3 ning massasini toping?
A) 255.78 B)146.16 C) 109.62 D) 182.7
327. Modda miqdori 2.5 mol bo'lgan HNO3 ning massasini toping?
A) 157.5 B) 220.5 C) 126 D) 94.5
328. Modda miqdori 2.3 mol bo'lgan NH3 ning massasini toping?
A) 54.74 B)31.28 C) 39.1 D) 23.46
329. Modda miqdori 1.6 mol bo'lgan NH3 ning massasini toping?
A) 27.2 B) 38.08 C) 21.76 D) 16.32
330. Modda miqdori 0.3 mol bo'lgan NO2ning massasini toping?
A) 19.32 B)11.04 C) 13.8 D) 8.28
331. Modda miqdori 2.6 mol bo'lgan NO2ning massasini toping?
A) 119.6 B) 167.44 C) 95.68 D) 71.76
332. Massasi 231 g bo'lgan 5.25 mol moddaning molekulyar massasini toping ?
A) 88 B) 44 C) 17.6 D) 35.2
333. Modda miqdori 0.1 mol bo'lgan CO2 ning massasini toping?
A) 6.16 B)3.52 C) 4.4 D) 2.64
334. Modda miqdori 2.1 mol bo'lgan CO2 ning massasini toping?
A) 129.36 B)73.92 C) 92.4 D) 55.44
335. Modda miqdori 1.3 mol bo'lgan P2O5ning massasini toping?
A) 258.44 B)147.68 C) 110.76 D) 184.6
336. Modda miqdori 0.5 mol bo'lgan P2O5 ning massasini toping?
A) 99.4 B)56.8 C) 42.6 D) 71
337. Modda miqdori 1.9 mol bo'lgan C6H12O6ning massasini toping?
A) 342 B) 478.8 C) 273.6 D) 205.2
338.Modda miqdori 0.4 mol bo'lgan KNO3 ning massasini toping?
A) 56.56 B)32.32 C) 40.4 D) 24.24
339. 370 g so’ndirilgan ohak necha mol kelishini hisoblab toping?
A) 10 mol B) 15 mol C) 5 mol D) 100 mol 340.171 g shakar (C₁₂H₂₂O₁₁) necha mol kelishini hisoblab toping?
A) 0,5 mol B) 2 mol C) 3 mol D) 4 mol
341. Massasi 490 gr bo’lgan bertolle tuzining parchalanishidan hosil bo’lgan O₂ ning moliga teng miqdordagi H₂ ni massasini toping. A) 3 B) 6 C) 9 D) 12
342. Har biri 1400 gr li tarkibida 60% temir saqlagan 2 dona temir soqqachalarini umumiy molini aniqlang? A) 15 mol B) 20 mol C) 30 mol D) 50 mol
343. Beshta molekulasini massasi 3,652 ∙ 10^-25 kg bo’lgan gazni nisbiy molekulyar va molyar massasini toping. A) 44 g/mol; 44 g B) 44 mol/g; 44C) 44 g/mol; 44D) 44 va 44g/mol
344. 1,5 mol CO₂ ni massasiga teng bo’lgan azot (I) oksidning molini aniqlang.
A) 44 mol B) 0,1 mol C) 1 mol D) 1,5 mol
345. 1,5 mol xalkopirit (CuFeS₂) ni massasidan 69,6 g ga kam bo’lgan bornit (Cu₃FeS₃) ning molini aniqlang. A) 0,6 mol B) 0,8 mol C) 1 mol D) 1,2 mol
346. 3 mol gausmanit (Mn₃O₄) tarkibidagi kislorod molekulasi necha gramm braunit (Mn₂O₃) tarkibida bo’ladi? A) 474 gr B) 601 gr C) 916 gr D) 632 gr
347. 1,73 mol malaxitni massasiga teng bo’lgan azuritning molini aniqlang.
A) 0,85 mol B) 0,34 mol C) 1,2 mol D) 1,11 mol
348. Kislorod va metanning teng mol miqdordagi 1,25 mol aralashmasining molyar massasini aniqlang. A) 24 g/mol B) 48 g/mol C) 44 g/mol D) 16 g/mol
349. Kislorod va metanning teng mol miqdordagi 0,75 mol aralashmasining molyar massasini aniqlang. A) 24 g/mol B) 12 g/mol C) 44 g/mol D) 48 g/mol
350. ¼ gr – molekula suvni massasidan ¼ marta katta bo’lgan suvni molini aniqlang.
A) 0,025 mol B) 0,05 mol C) 0,0625 mol D) 0,1 mol
351. 1,5 gr – molekula monogidratni massasini aniqlang?
A) 1,5 gr B) 49 gr C) 73,5 gr D) 147 gr
352. ¾ gr – atom kislorodni massasidan ¾ marta kichik bo’lgan kislorod molekulasini molini aniqlang. A) 0,28 B) 0,5 mol C) 0,56 mol D) 1 mol
353. ¾ gr – atom kislorodni massasidan ¾ marta katta bo’lgan suvni molini aniqlang.
A) 0,28 B) 0,5 mol C) 0,56 mol D) 1 mol
354. a) 1,5 gr – atom azot, b) 0,6 gr – atom ftor, v) 15 gr – atom temir necha gramm keladi?
A) a – 21 gr, b – 11,4 gr, v – 420 gr B) a – 42 gr, b – 11,4 gr, v – 420 gr
C) a – 14 gr, b – 22,8 gr, v – 840 gr D) a – 21 gr, b – 11,4 gr, v – 840 gr

355. a) 6 gr kislorod, b) 5 gr vodorod, v) og’irligi 54 gr bo’lgan alyuminiy choy qoshig’i necha gr – atomni tashkil etadi?

A) a – 0,375 gr – atom, b – 5 gr - atom, v – 2 gr – atom
B) a – 0,325 gr – atom, b – 5 gr – atom, v – 2 gr – atom
C) a – 0,375 gr – atom, b – 2,5 gr – atom, v – 4 gr - atom
D) a – 0,125 gr – atom, b – 10 gr – atom, v – 2 gr – atom
356. 583 probali oltinning 1 grammi 137 ming 20 so’m turadi. 1 gramm – atom oltin necha pul turadi? A) 22,1 mln so’m B) 38 mln so’m C) 46,3 mln so’m D) 52,5 mln
357. a) 0,5 gramm – molekula azot, b) 1 gramm – molekula mis (II) oksid, v) 1 gramm – molekula kuporos moyi necha gramm kelishini hisoblab toping.
A) a – 14 gr, b – 80 gr, v – 98 B) a – 14 gr, b – 40 gr, v – 49 gr
C) a – 28 gr, b – 80 gr, v – 98 gr D) a – 28 gr, b – 40 gr, v – 49 gr
358. a) 1,5 gramm – molekula kislorodda, b) 1 gramm – molekula vodorodda, v) 2 gramm – molekula argonda necha gramm – atom bo’ladi?
A) a – 2, b – 2, v – 2 B) a – 3, b – 1, v – 1 C) a – 3, b – 2, v – 2 D) a – 2, b – 2, v – 1