Nitroglitserinning spirtdagi necha LI eritmasidan yurak kasalliklarida dori-darmon sifatida foydalaniladi? A b c d 5

Quyidagi+9/2O₂=CO₂+4H₂O chala tenglamadagi bo’sh joyga qaysi moddani qo’yish mumkin? A) propanol B) propanal C) propan D) propenol

25.6 ml (p=0.5 gr/ml) metil spirtga 30% li 150 gr HBr eritmasi qo’shib qizdirilganda, necha gramm modda hosil bo’ladi? A) 37.5 B) 38 C) 32.7 D) 28.3

0.8 mol C₂H₅OH mo’l miqdordagi NaBr va sulfat kislota bilan isitildi va massasi 56.68 gr brometan hosil bo’ldi. Brometanning hosil bo’lish unumini aniqlang. A) 70 B) 75 C) 80 D) 65

32.2 gr toluolni bromlash reaksiyada olingan gazsimon mahsulotni neytrallashga sarflangan 80% li NaOH (0.7 gr/ml) eritmasining hajmini (ml) hisoblang. (reaksiyada 2,4-dibromtoluol va 2,4,6-tribromtoluol 2:3 mol nisbatda hosil bo’ladi) A) 78 B) 65 C) 67 D) 75