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Basic concepts of Chemistry class 11| One Shot | CBSE NEET JEE

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āž”ļøFree Notes:http://bit.ly/Class11ChemistryChapter1SomebasicconceptsofchemistryNotes āž”ļøFree NCERT Solutions:http://bit.ly/Class11ChemistryChapter1SomebasicconceptsofChemistryNcertSolutions āž”ļøJoin Telegram:https://t.me/LearnoHub11 āž”ļøAsk Doubts:https://www.examfear.com/question/ 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 ā€œamuā€ 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 6.643x10-23g.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 O-atom 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. LearnoHub.com (formerly called ExamFear Education) is a Free Education platform with more than 6000 videos on Physics, Chemistry, Maths, Biology, English, Science experiments, tips & tricks and motivational videos for Classes 6 to 12. Learn for Free! āž”ļøWebsite: http://www.learnohub.com āž”ļøFacebook: https://bit.ly/LearnoHubFB āž”ļøInstagram: https://bit.ly/LearnoHubInsta Get Our Videos in Pendrives: Class 11 - https://bit.ly/LHPenDrive11 Post your doubts here: https://www.examfear.com/question/ Join our Telegram Group: LearnoHub - 11: https://t.me/LearnoHub11 About the Teacher: Roshni Mukherjee, the Founder-Educator at LearnoHub has been building this free learning platform since 2011. She has been recognised as one of the 100 Women Achievers of India by the Ministry of Women & Child Development and felicitated by the President of India in 2016. Roshni has been invited by Google to speak at Global Education Symposium 2017 held at Google Headquarters, California. Limca Book of Records also recognized our work. Watch Roshni's Tedx Talk to know more about her journey: https://www.youtube.com/watch?v=v2sW_... #LearnoHubChemistry #SabkoSamajhAayega #FREEhaiParBESThai #CBSEClass11Chemistry Join us and let us together build this Free Learning Platform! We will surely ensure that you enjoy the real learning with us. Copyright Ā© All rights reserved. LearnoHub | ExamFear Education

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