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This is a ONE SHOT video (compilation based on old videos) revised as per latest syllabus.

Timestamps:
0:00 Introduction
0:36 Basic concepts
3:02 States of Matter
9:46 Macroscopic Level
10:07 Pure Substance
13:31 Mixture
17:08 Properties of Matter
19:03 System of Unit
21:40 The International System of Units(SI)
22:26 Mass
23:31 Mass vs. Weight
24:47 Temperature
26:53 Prefixes in SI Units
28:39 Derived Units
30:44 Uncertainty
33:45 Uncertainty in measurement:Precision & Accuracy
35:57 Uncertainty
37:11 Scientific Notation
39:55 Significant Figures
41:15 Uncertainty in measurement:Significant Figures
45:02 Significant Figures: Operations rules
47:33 Conversion
48:58 Dimensional Analysis: Example
50:54 Laws of Chemical Combination
56:53 Avogadro Law
59:03 Dalton’s Atomic Theory
1:00:47 Modern Atomic Theory
1:03:52 Atomic & Molecular Masses
1:07:37 Finding the value of “amu”
1:10:13 Average Atomic Mass
1:11:27 Example1:Molecular Mass
1:13:02 Formula Mass
1:14:31 Formula &Molecular Mass
1:17:57 Why Mole?
1:20:45 Why Molecules Count?
1:21:35 Where did this number come from
1:22:21 Mole concepts
1:28:44 Molar Mass
1:34:35 Calculating Number of Moles
1:35:59 Question1: Calculate Number of Moles
1:39:03 Question2: Calculate Number of Moles
1:47:36 Question3: Calculate Number of Moles
1:51:11 Percentage Composition
1:53:52 Question1:percentage composition
1:56:13 Empirical Formula
1:56:35 Determining Empirical formula & Molecular formula
2:05:15 Stoichiometry
2:06:15 Chemical Reaction
2:06:54 Balanced Chemical reaction
2:12:05 Limiting Reagent
2:22:37 Reactions in Solutions
2:24:29 Mass percent or weight per cent
2:26:30 Mole Fraction
2:27:45 Molarity
2:30:50 Molality

In this video we will cover all theory concepts and questions like:
1.Calculate the molecular mass of the following: (i) H2O (ii)CO2(iii)CH4
2.NCERT solutions class 11 chemistry chapter 1 Some basic concepts of chemistry
3.NCERT notes class 11 chemistry chapter 1 Some basic concepts of chemistry
4.One atom of an element x weighs 6.643x1023g.Number of moles in its 20kg is
5.3.011 x 1022 atoms of an element weighs 1.15g.The atomic mass of element is
6.What is the number of moles of Oatom in 126 amu in HNO3?
7.Calculate the mass per cent of different elements present in sodium sulphate(Na2SO4)?
8.Determine the empricial formula of an oxide of iron which has 69.9% iron and 30.1% dioxygen in mass?
9. A sample of drinking water was found to be severely contaminated with chloroform, CHCl3, supposed to be carcinogenic in nature.The level of contamination was 15 ppm (by mass).Determine the molality of chloroform in the water sample.
10.Calculate the mass of sodium acetate (CH3COONa) required to make 500 mL of 0.375 molar aqueous solution. Molar mass of sodium acetate is 82.0245 g mol–1
10.A sample of drinking water was found to be severely contaminated with chloroform, CHCl3, supposed to be carcinogenic in nature.The level of contamination was 15 ppm (by mass).Express this in percent by mass.

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