Скачать с ютуб Mole concept ( Empirical & Molecular Formula , Vapour density ) L-15 Class 11 /JEE/NEET 2026 в хорошем качестве

Mole concept ( Empirical & Molecular Formula , Vapour density ) L-15 Class 11 /JEE/NEET 2026

Hello Students, Watch the Complete Video on " Some Basics Concepts of Chemistry Class 11 , NEET and JEE Preparation. In this video, Kunal sir will cover all the topics of Some basics concepts of Chemistry Class 11 Chapter 1. This session will be very helpful for the students who are preparing for the NEET and JEE Exam. If you want to score high in NEET/JEE Chemistry, then this session will help you to get more marks. So, watch the complete video, and let's get a better understanding of the topic. % Composition Empirical formula Molecular Formula Vapour density Calculate the mass percentage composition of copper pyrites (CuFeS2). Ferric sulphate is used in water and sewage treatment and in removal of suspended impurities. Its empirical formula is Fe2(SO4)3 Calculate the mass percentage of iron, sulphur and oxygen in this compound. The molecular mass of an organic compound is 78 and its percentage composition is 92.4% C and 7.6% H. Determine the molecular formula of the compound. An organic compound on analysis gave the following percentage composition: C = 57.8%, H = 3.6% and the rest is oxygen. The vapour density of the compound was found to be 83. Find out the molecular formula of the compound.