kimyoning asosiy qonunlari

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1-amaliy mashg’ulot mavzu: kimyoning asosiy qonunlari. mol-“n”. molekulyar massa-“m”. massa-“m” m = m/n – moddaning molyar massasini topish. birligi – g/mol m = n ⋅ m – moddaning massasini topish. birligi – mg, gr, kg n = m/m – moddaning molini topish. birligi – mol 1. 80 gr natriy gidroksid (naoh) ni modda miqdor(mol)ni toping. yechish; 1-usul. 1) naoh ni molekulyar massasini topamiz. m (naoh) = 23+16+1=40 gr 2) molni topish fo’rmulasiga qo’yamiz n= = = 2 mol ni tashkil qiladi. 2-usul. 1) naoh = 40 gr 40 gr ────── 1 mol 2) x= = 2 mol ekan 80 gr ────── x= 3) j:2 mol 2. 0,5 mol o’yuvchi natriy (naoh) ni massasini gr toping. yechish; 1) m (naoh)=40 gr/mol 2) m = mr∙n =40gr/mol∙0,5mol=20 gr j:20 3. 5,2 gr nomalum modda 0,2 mol kelsa,nomalum modda molekulyar massasini toping. yechish; 1-usul 1) quyidagi fo’rmula bo’yicha molekulyar massani topamiz. m = …

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) 2.57923 12. modda miqdori 1 mol bo'lgan na2so4ning massasini toping? a) 142 b) 198.8 c) 113.6 d) 85.2 13. modda miqdori 1 mol bo'lgan na2so4ning massasini toping? a) 198.8 b)113.6 c) 142 d) 85.2 14. massasi 189 g bo'lgan 1.33099 mol moddaning molekulyar massasini toping ? a) 284 b) 56.8 c) 113.6 d) 142 15. massasi 215 g bo'lgan 1.51408 mol moddaning molekulyar massasini toping ? a) 284 b) 142 c) 56.8 d) 113.6 16. modda miqdori 2.7 mol bo'lgan hno3 ning massasini toping? a) 238.14 b) 170.1 c) 136.08 d) 102.06 17. modda miqdori 2.9 mol bo'lgan hno3 ning massasini toping? a) 255.78 b)146.16 c) 109.62 d) 182.7 18. modda miqdori 2.5 mol bo'lgan hno3 ning massasini toping? a) 157.5 b) 220.5 c) 126 d) 94.5 19. massasi 242 g bo'lgan 3.84127 mol moddaning molekulyar massasini toping ? a) 126 b) 63 c) 25.2 d) 50.4 20. massasi …

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ori 0.3 mol bo'lgan no2ning massasini toping? a) 19.32 b)11.04 c) 13.8 d) 8.28 33. modda miqdori 2.6 mol bo'lgan no2 ning massasini toping? a) 119.6 b) 167.44 c) 95.68 d) 71.76 34. massasi 249 g bo'lgan 5.41304 mol moddaning molekulyar massasini toping ? a) 92 b) 18.4 c) 36.8 d) 46 35. massasi 268 g bo'lgan no2 ning molini toping? a) 7.28261 b) 14.56522 c) 11.65217 d) 5.82609 36. massasi 132 g bo'lgan 2.86957 mol moddaning molekulyar massasini toping ? a) 46 b) 92 c) 18.4 d) 36.8 37. massasi 231 g bo'lgan 5.25 mol moddaning molekulyar massasini toping ? a) 88 b) 44 c) 17.6 d) 35.2 38. massasi 285 g bo'lgan 6.47727 mol moddaning molekulyar massasini toping ? a) 44 b) 88 c) 17.6 d) 35.2 39. modda miqdori 0.1 mol bo'lgan co2 ning massasini toping? a) 6.16 b)3.52 c) 4.4 d) 2.64 40. massasi 97 g …

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ni toping? a) 3.85938 b) 7.71875 c) 6.175 d) 3.0875 53. massasi 152 g bo'lgan so3 ning molini toping? a) 4.75 b) 1.9 c) 3.8 d) 2.375 54. massasi 134 g bo'lgan kno3 ning molini toping? a) 1.32673 b) 3.31683 c) 2.65347 d) 1.65842 55. massasi 33 g bo'lgan kno3 ning molini toping? a) 0.81683 b) 0.65347 c) 0.32673 d) 0.40842 56. modda miqdori 1.6 mol bo'lgan kno3 ning massasini toping? a) 226.24 b)129.28 c) 96.96 d) 161.6 57. massasi 122 g bo'lgan 1.20792 mol moddaning molekulyar massasini toping ? a) 202 b) 40.4 c) 101 d) 80.8 58. modda miqdori 2.2 mol bo'lgan kno3 ning massasini toping? a) 222.2 b) 311.08 c) 177.76 d) 133.32 59. massasi 207 g bo'lgan kno3 ning molini toping? a) 2.56188 b) 5.12376 c) 4.09901 d) 2.0495 60. massasi 21 g bo'lgan kno3 ning molini toping? a) 0.5198 b) 0.20792 c) 0.41584 d) 0.2599 …

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5 b) 0.38 c) 0.19 d) 0.2375 73. massasi 279 g bo'lgan 2.79 mol moddaning molekulyar massasini toping ? a) 200 b) 100 c) 40 d) 80 74. modda miqdori 1.3 mol bo'lgan ohaktoshning massasini toping? a) 182 b)104 c) 78 d) 130 75. massasi 100 g bo'lgan cuso4 ning molini toping? a) 0.78125 b) 1.5625 c) 1.25 d) 0.625 76. massasi 198 g bo'lgan cuso4 ning molini toping? a) 1.2375 b) 3.09375 c) 2.475 d) 1.54688 77. massasi 27 g bo'lgan cuso4 ning molini toping? a) 0.42188 b) 0.3375 c) 0.16875 d) 0.21094 78. modda miqdori 1.6 mol bo'lgan cuso4 ning massasini toping? a) 358.4 b)204.8 c) 256 d) 153.6 79. massasi 211 g bo'lgan 1.31875 mol moddaning molekulyar massasini toping ? a) 320 b) 64 c) 128 d) 160 80. massasi 94 g bo'lgan 0.5875 mol moddaning molekulyar massasini toping ? a) 320 b) 160 c) 64 d) …

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1-amaliy mashg’ulot mavzu: kimyoning asosiy qonunlari. mol-“n”. molekulyar massa-“m”. massa-“m” m = m/n – moddaning molyar massasini topish. birligi – g/mol m = n ⋅ m – moddaning massasini topish. birligi – mg, gr, kg n = m/m – moddaning molini topish. birligi – mol 1. 80 gr natriy gidroksid (naoh) ni modda miqdor(mol)ni toping. yechish; 1-usul. 1) naoh ni molekulyar massasini topamiz. m (naoh) = 23+16+1=40 gr 2) molni topish fo’rmulasiga qo’yamiz n= = = 2 mol ni tashkil qiladi. 2-usul. 1) naoh = 40 gr 40 gr ────── 1 mol 2) x= = 2 mol ekan 80 gr ────── x= 3) j:2 mol 2. 0,5 mol o’yuvchi natriy (naoh) ni massasini gr toping. yechish; 1) m (naoh)=40 gr/mol …

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