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Keling!!! Kimyoni birgalikda Γ³rganamizπŸ”₯
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ustoz: Bunyod Raxmanov
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UNIVERSAL KIMYO
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UNIVERSAL KIMYO
πŸ” πŸ”€πŸ” πŸ” πŸ” πŸ” 
R–CH=CH2 yohud =CH2 bilan tugagan alkenlar kuchli oksidlovchi reagentlar ishtirokida oksidlanganda CO2 gacha oksidlanadi. HCOOH oraliq mahsulot bΓ²lib, u yana oksidlanib suv va CO2 ga parchalanadi. Yuqoridagi ingliz manbasida bu aniq aks etganβœ”οΈ

πŸ”₯UNIVERSAL KIMYOπŸ”₯
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πŸ” πŸ”€πŸ” πŸ” πŸ” πŸ” 

πŸ”₯UNIVERSAL KIMYOπŸ”₯
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⭕️ MILLIY SERTIFIKATDA BIZNI QANDAY Oβ€˜ZGARISHLAR KUTMOQDA?

πŸ“Œ Rash modeli bekor boβ€˜ladimi?

πŸ“Œ Majburiy fanlar uchun B+ olish kerak boβ€˜ladimi?

πŸ“Œ Biologiya milliy sertifikatida qanday yangiliklar boβ€˜lishi mumkin?

πŸ“Œ Batafsil shu kanallardan topasiz πŸ‘‡πŸ‘‡πŸ‘‡
545 viewsAsilbek Yarashev, 
BIOLOGIYA
KIMYO
BIOLOGIYA KIMYO
UNIVERSAL KIMYO
Savol❓
Assalomu alaykum ustoz
Hund qoidasi
Gund qoidasi
Qaysi biri toΚ»gΚ»ri boΚ»ladi

Javobβœ”οΈ
Hund β€” inglizcha talaffuzdagi holati va yozilishi
Gund β€” o'zbekcha talaffuzdagi holati va yozilishi
misol uchun: inglizchadagi "horizontal" va "Harry" ... larni nima deymiz β€” "gorizontal" va "Garri" ... to'g'rimi?
Demak: Gund deb yozgan va aytgan ma'qul.
(ustoz: Bunyod Raxmanov)

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πŸ”₯πŸ”₯πŸ”₯ qani-qani faol bo'lamiz, 4444 ta chiroyli raqamli a'zolarga ega kanal nahot 100 ta ovoz to'play olmasa....maqsad ilmiy faollikka da'vat qilish, dangasalik va xafsalasizlikni yo'q qilib, mustahkam irodani kuchaytirishπŸ“Š
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Li + HNO3(k) β€”>❓
Laboratoriya tajribasida ko'rganingizga asoslanib, kimyoviy reaksiya(lar) tenglamasini tuzing.

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πŸ” πŸ”€πŸ” πŸ” πŸ” πŸ” 

πŸ‘†bu lab.tajribasidan maqsad 2 ta bo'lgan:
❓ Li eng avvalo H2O bn k.reaksiya beradimi yoki HNO3 bn?
❓ Li kons.HNO3 bn k.reaksiyasida qanday gaz ajraladi?

βœ”οΈ tajribadan ma'lum bo'ldiki Li avvalo HNO3 bn k.reaksiya beradi (unum va ulush jihatdan). Demak, Li ning HNO3 bn k.reaksiya tezligi Li ning H2O bn k.reaksiya tezligidan ancha yuqori.
βœ”οΈ Li metall bo'lakchasi tashlanganda och-qo'ng'ir rangli gaz(lar) ajraldi. Sof NO2 gaz rangi (qizg'ish) qo'ng'ir rang. Li kuchli solvatlanish hususiyatiga ega, shu sababli katta energiya ajrlalishi hisobiga suv molekulalarini ham bug'latadi. Natijada, NO2 va suv bug'i gazlari aralashmasi och-qo'ng'ir rang hosil qilmoqda. Eritmada HNO3 tugagach Li metall bo'lakchasining eritma sirtida suv bn k.reaksiyasi kuzatildi, ya'ni ajralgan gaz H2 ligi sabab ko'rinmadi.

πŸŸ₯kimyoviy reaksiya tenglamalarini tuzib qo'yamiz:
Li + 2HNO3(k) = LiNO3 + NO2 + H2O
2Li + 2H2O = 2LiOH + H2

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Ustoz shunda Li metalli HNO3 kislota miqdoridan kam bo'lsa suv bilan ta'sirlashish umuman sodir bo'lmaydimi amalda
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Ustoz shunda Li metalli HNO3 kislota miqdoridan kam bo'lsa suv bilan ta'sirlashish umuman sodir bo'lmaydimi amalda
πŸ” πŸ”€πŸ” πŸŸ’πŸ”€

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πŸ” πŸ” πŸ” πŸ” πŸ” πŸ” 

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Bir necha xil usuldagi yechimlari kerakmi❓
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Bronza asosini Cu va Sn tashkil qilsa, bu ikki metall qotishmasining hosil bo'lishi qanday jarayon❓

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