L-6. Avogadro’s Number Explained | Chapter 4 Stoichiometry – 9th Chemistry by Prof. Majid Ali

Title: Avogadro’s Number Explained | Chapter 4 Stoichiometry – 9th Chemistry by Prof. Majid Ali

Welcome to an in-depth chemistry lecture by **Prof. Majid Ali (Gold Medalist)**! In this video we dive into **Avogadro’s Number (6.022×10²³)**, how it defines one mole, and why it’s essential for understanding stoichiometry. If you're Class 9 or studying chemistry fundamentals, you’ll gain clarity on how atoms, molecules, and particles relate to grams and chemical reactions.

What You’ll Learn

Definition and importance of *Avogadro’s Number (NA)*
How one mole connects atomic mass units (amu) to measurable mass
Representing reactions with large numbers (from atoms to molecules)
How to use Avogadro’s Number in real calculations
Examples & reaction representations for better understanding

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📚 Teachers & Resources

*Teacher:* Prof. Majid Ali (Gold Medalist)
📺 Watch all lectures on our official YouTube channel:
🔗    / @mjdchemistry9241  

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✅ Why Watch?

This video is specially designed for *9th Grade / Class 9 Chemistry students* preparing for exams and wanting solid foundations in stoichiometry. It’s packed with clear explanations, practical examples, and visual aids to make learning easy & memorable. Perfect for homework, self-study, or test revision.

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⚡ Don’t Forget

👍 Like this video if you find it helpful
🔔 Subscribe to our channel for all chemistry lectures
💬 Share your questions or thoughts in the comments — Prof. Majid Ali will try to answer!

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#📌 Chapters

0:00 Introduction to Avogadro’s Number
2:15 Definition & significance
5:30 Relating atoms, molecules & moles
8:45 Real calculation examples
12:00 Summary & practice problems

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*Tags:* Avogadro’s Number, Class 9 Chemistry, Stoichiometry, Chemistry Lecture, Mole Concept

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Thanks for watching & happy learning!
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#AvogadrosNumber #Stoichiometry #Class9Chemistry #ProfMajidAli #MJDchemistry #MoleConcept