1. 1-Mavzu;atom tarkibi 1

1071,75 mol Cl₂O₅ va 0,75 mol Mn₂O₇ daqi atomlar sonining nisbatini toping
A) 1,8:2 B) 1:1,8 C) 1,8:1 D)2:1E) 1,5:1
1080,75 mol B₂O₃va 1 mol KCIO₃ dagi atomlar sonining'nisbatini toping.
A) 1:1,6 B) 1:1,4 C) 1:1,5 D) 1:1,3 E) 1:1,7
109 3 mol Cl₂O va 2 molN₂O₃ dagi atomlar sonining nisbatini toping. A) 1:1,1 B) 1:2,1C) 1:1,2 D) 1:1,3 E) 2:1,0
110 Odam organizmida o'rtacha 4,5 g miqdorda temir bo'lib, uning 65% i qon tarkibida bo'ladi. Qon tarkibidagi temir atomlarining sonini toping.
A) 3,14-10²² B) 3.15-10²⁴
C) 6,5-10²³ D) 6,02-10²³
E) 2.15-10²²
111 Tabiiy shifobaxsh suvlar tarkibida Fe²⁺ ionlari mavjud bo'lib, ularning 1 l suvdagi miqdori 100 mg ni tashkil etadi.
100 ml suvdagi Fe²⁺ ionlari sonini toping.
A) 1.075-10²⁰ B) 2,075-10²⁰
C) 6,02-10²⁰ D) 2,03-10²⁰
E) 12.04-10²⁰
112. Odamorganizmining (O‘rtachamassasi70 kg) 2% inikalsiytashkiletib, uning99% miqdorisuyakvatishlartarkibinitashkiletadi. Suyak va tishlar tarkibidagi kalsiy ionlarining sonini toping.
A) 1.77-10²⁵ B) 2.1-10²⁵
C) 1.77-10²⁶ D) 8,3-10²³
E)7,17-10²⁵
113. 0,25 mol CaCO₃ dagidek atom necha gramm malaxitda Cu(OH)₂ ·Cu(CO₃)₂bo'ladi ?
A) 22,2 B) 11,1 C)27,75 D) 33,3
1140,3 mol X₂O₅ modda 42,6 g kelsa, noma'lum elementni ko'rsating ?
A) Azot B) Fosfor C) Mishyak D) Surma
115X(OH)₃ ning 42,8 gramidagi kislorod atomlari soni 7,224 ·10²³ ta bo'lsa, noma'lum elementni ko'rsating ?
A) Alyuminiy B) Xrom C)Temir D) Marganes
116Kislorod massalari o'zaro teng bo'lgan sulfat kislotava suv aralashmasidagi moddalar atom sonlari nisbati qanday bo'ladi?
A) 3,5:6 B) 4:7 C) 3:8 D) 1,5:4,5
117. 3,96 g [Fe(OH)₂]₂Cr₂O₇ dagi kislorod atomlari sonini hisoblang ?
A) 6,622-10²² B) 6,02 10²³
O 3,01-10²³ D) 9,364 -10²²
118. 5,55 g malaxitdagidek kislorod necha dona sulfat kislota molekulasida bo'ladi ?
A) 1,50510²³ B) 1,50510²²
C)1,8810²² D) 1,88·10²³
119Massa nisbatlari 1,96 : 3,15 bo'lgan sulfat kislota va nitrat kislotaning atomlar soni nisbati qanday bo'ladi ?
A) 1,4 :2 B) 2,8:5 C) 1:3 D) 1,2 : 2,4
Absalyut massa


120Titan atomining massasini (kg) toping.
A) 7,97·10^-26 B) 7,11·10^-26
C) 7,97·10^-20D) 6,97· 10^-26
121. Mis atomining absolyut massasi necha gramm?
A) 3,9 • 10^-23B)1,063 • 10^-22
C) 6,4 • 10^-23D) 2• 10^-22


122. Kristall soda tarkibidagi tuz va kristallizatsiya suvining mol nisbati 1: 10 bo‘lsa,(Na₂CO₃ ·10H₂O tuzning absalyut massasini (kg)toping.
A) 47,5·10^-26B) 70,43·10^-26
C) 45,32·10^-26D) 72,7·10^-26
123. Modda molekulasining massasi 5,65·10^-26kg bo‘lsa, uning nisbiy molekulyar massasi qanchaga teng?
A) 34 B) 36 C) 38 D) 32
124. Modda molekulasining massasi 16,279·10^-23 gr bo‘lsa, uning nisbiy molekulyar massasi qanchaga teng?
A) 34 B) 36 C) 98 D) 32
125. 5 ta molekulasining massasi 53.1561·10^-26kg bo‘lsa, uning nisbiy molekulyar massasi qanchaga teng?
A) 34 B) 32C) 38 D) 32
126. Xona temperaturasidagi oltingugurt bug‘i tarkibida bita molekula S_x ning massasi 4,26 ·10^-22 g ga teng. Oltingugurt atomining massasi
5,32·10^-23 g ga teng bo‘lsa, polioltingugurtda x ning qiymatini toping.
A) 6 B) 8 C) 10 D) 12
127. 100 dona azot atomining massasi necha gramm bo‘ladi?
A) 2,325•10^-21 B) 2,325•10^-24
C) 1,7•10^-21D) 1,39 •10^-22
128. Oqsil molekulasining m_ab= 53,156 •10^-20 g bo‘lsa, oqsilning molyar massasini toping.
A) 320000 B) 325000
C) 300000 D) 32000
129. Oqsil molekulasining massasi (m_ab=8,3056•10^-19 g) bo‘lsa, uning nisbiy molekulyar massasini toping.
A) 50000 V) 500000 S) 60000 D) 3200
13056 gr temirdagi elektronning massasini gr da toping.(elektronning massasi proton massasidan 1840 marta kichik)
A) 0,01413 gr B) 0,0001 C) 0,00222 D) 0,00333
131 4.9 gr H₂SO₄ tarkibidagi elektronning massasini hisoblang .(elektronning massasi proton massasidan 1840 marta kichik)
A) 0,01413 gr B) 0,001358 gr C) 0,00005 mg D) 0.00567 gr
132 0,05 gr CaCO₃ tarkibidagi elektronning massasini hisoblang .(elektronning massasi proton massasidan 1840 marta kichik)
A) 0,0023 gr B) 0,0000456 mg C) 0,271739 mg D) 0,00089 mg
133 0,00055 m.a.b elektron bo’lsa 0,106 gr Na₂CO₃ tarkibidagi elektronning massasini hisoblang
A) 2,86 ·10^-2 mg B) 2,86 ·10^-3 mg C) 2,86 ·10^-1 mg 2,86 ·10^-4 mg
134 0,00055 m.a.b elektron bo’lsa 2 t Ag tarkibidagi elektronning massasini hisoblang.
A) 12 gr B) 300 gr C) 378 gr D) 478,7037 gr