Basic Concepts of Chemistry Class 11 #2 | Mole Concept | in Hindi

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The molecular mass is the mass of a given molecule: it is measured in daltons. The atomic mass is the mass of an atom. Although the SI unit of mass is kilogram, the atomic mass is often expressed in the non-SI unit dalton where 1 dalton is defined as ¹⁄₁₂ of the mass of a single carbon-12 atom. The mole is the unit of measurement for amount of substance in the International System of Units. In this video, we will cover:
1. Atomic & Molecular Mass
2. Finding the value of “amu”
3. Average Atomic mass
4. Calculate the molecular mass of the following :( i) H2O; (ii) CO2; (iii) CH4
5. Formula Mass
6. Formula & Molecular Mass
7. Why Mole?
8. Why Molecules Count?
9. Where did this number come from?
10. Mole Concepts
11. Molar mass
12. Calculating Number of Moles
13. Calculating Number of Moles: Question 1
14. What is the number of moles of O-atom in 126amu of HNO3
15. 3.011×1022 atoms of an element weighs 1.15 gm. The atomic mass of the element is:
16. Percentage Composition
17. Calculate the mass percent of different elements present in sodium sulphate (Na2SO4).
18. Empirical Formula
19. Determining Empirical & Molecular formula
20. Stoichiometry
21. Chemical Reaction
22. Balanced Chemical Equation
23. Balanced chemical equation: Stoichiometry
24. Limiting Reagent
25. Limiting Reagent: - In a reaction A + B2 → AB2 Identify the limiting reagent, if any, in the following reaction mixtures.
26. Reactions in Solutions
27. Mass per cent or weight per cent
28. Mole Fraction
29. Molarity
30. Molality

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