@Neokimyo telegram kanali va @neokimyo_FKF telegram guruhi uchun maxsus masalalarga yechimlar.
Savol yo’llagan: Жулдыз🌸.
Agar, izomerlanish jarayoni (n – pentan ↔️ 2 – metilbutan) da, n – pentanning 20% i 2 – metilbutanga aylangan bo’lsa, birlamchi (a) va ikkilamchi (b) uglerod atomlari soni qanday o’zgaradi?
A) a – 7/5 marta ortadi;
b – 15/7 marta kamayadi;
B) a – 13/10 marta ortadi;
b – 15/9 marta kamayadi;
C) a – 6/5 marta ortadi;
b – 15/11 marta kamayadi;
✅D) a – 11/10 marta ortadi;
b – 15/13 marta kamayadi;
@Neokimyo telegram kanali va @neokimyo_FKF telegram guruhi uchun maxsus masalalarga yechimlar.
Savol yo’llagan: Javohir Ernazarov.
Eruvchanligi S(40°C) = 25; S(70°C) = 60 ga teng bo’lgan xrom (III) nitratning 632 g to’yingan eritmasi 70 °C dan 40 °C gacha sovutilsa, qancha (g) Cr(NO3)3•9H2O cho’kmaga tushadi?
A) 138,25 B) 200 C) 280✅ D) 160
Yechim va izoh (lar) muallifi, kimyo fani repetitori: Fazliddinov Kamoliddin Fazliddinovich.
Savol yo’llagan: Жулдыз🌸.
Agar, izomerlanish jarayoni (n – pentan ↔️ 2 – metilbutan) da, n – pentanning 20% i 2 – metilbutanga aylangan bo’lsa, birlamchi (a) va ikkilamchi (b) uglerod atomlari soni qanday o’zgaradi?
A) a – 7/5 marta ortadi;
b – 15/7 marta kamayadi;
B) a – 13/10 marta ortadi;
b – 15/9 marta kamayadi;
C) a – 6/5 marta ortadi;
b – 15/11 marta kamayadi;
✅D) a – 11/10 marta ortadi;
b – 15/13 marta kamayadi;
@Neokimyo telegram kanali va @neokimyo_FKF telegram guruhi uchun maxsus masalalarga yechimlar.
Savol yo’llagan: Javohir Ernazarov.
Eruvchanligi S(40°C) = 25; S(70°C) = 60 ga teng bo’lgan xrom (III) nitratning 632 g to’yingan eritmasi 70 °C dan 40 °C gacha sovutilsa, qancha (g) Cr(NO3)3•9H2O cho’kmaga tushadi?
A) 138,25 B) 200 C) 280✅ D) 160
Yechim va izoh (lar) muallifi, kimyo fani repetitori: Fazliddinov Kamoliddin Fazliddinovich.