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Solved Examples for JEE: Mole Concept & Molar Mass Video Lecture | Chemistry for JEE Main & Advanced

396 videos|778 docs|321 tests

FAQs on Solved Examples for JEE: Mole Concept & Molar Mass Video Lecture - Chemistry for JEE Main & Advanced

1. What is the mole concept in chemistry?
Ans. The mole concept is a fundamental concept in chemistry that relates the mass of a substance to the number of particles (atoms, molecules, or ions) it contains. One mole of any substance contains Avogadro's number of particles, which is approximately 6.022 x 10^23.
2. How do you calculate the molar mass of a compound?
Ans. To calculate the molar mass of a compound, you need to determine the atomic masses of all the elements present in the compound and then sum them up according to their respective ratios. The molar mass is expressed in grams per mole (g/mol).
3. What is Avogadro's number and how is it related to the mole concept?
Ans. Avogadro's number, denoted as 6.022 x 10^23, is the number of particles (atoms, molecules, or ions) in one mole of any substance. It is a fundamental constant in chemistry and is used to relate the mass of a substance to the number of particles it contains.
4. How can the mole concept be applied in stoichiometry problems?
Ans. The mole concept is extensively used in stoichiometry problems to determine the quantities of reactants and products involved in a chemical reaction. By using the balanced equation and the molar ratios, one can calculate the number of moles of substances involved and their corresponding masses.
5. Can you explain the relationship between the molar mass and the empirical formula of a compound?
Ans. The molar mass of a compound is related to its empirical formula by a whole number multiple. The empirical formula represents the simplest ratio of atoms in a compound, while the molar mass represents the actual mass of one mole of the compound. By comparing the molar mass with the empirical formula mass, one can determine the molecular formula of the compound.
396 videos|778 docs|321 tests

Timeline

00:00 Introduction
00:23 Contents
00:44 Mole Concept
04:07 Question 1
04:10 Molar Mass
07:27 Question 2
07:30 Calculation of number of Moles
11:30 Examples
12:32 Elemental Analysis
12:32 Question 3
13:33 Example
14:27 Percentage Composition
16:31 Question 4
16:32 Empirical formula and Molecular formula
17:42 Example
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