NEET > Chemistry Class 11 > Short Tricks: Mole Concept
Short Tricks: Mole Concept Video Lecture - Chemistry Class 11 - NEET
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FAQs on Short Tricks: Mole Concept Video Lecture - Chemistry Class 11 - NEET
| 1. What is the mole concept in chemistry? |  |
Ans. The mole concept in chemistry is a fundamental concept that relates the mass of a substance to the number of particles (atoms, molecules, or ions) it contains. It allows chemists to quantify and compare the amount of different substances involved in chemical reactions.
| 2. How is Avogadro's number related to the mole concept? | |
Ans. Avogadro's number (6.022 x 10^23) is a constant that represents the number of particles (atoms, molecules, or ions) in one mole of a substance. It is directly related to the mole concept, as one mole of any substance contains Avogadro's number of particles.
| 3. How can we calculate the number of moles in a given mass of a substance? | |
Ans. To calculate the number of moles in a given mass of a substance, you need to divide the mass of the substance by its molar mass. The molar mass is the mass of one mole of the substance, expressed in grams.
| 4. What is the relationship between moles and volume of a gas at STP? | |
Ans. At STP (Standard Temperature and Pressure), one mole of any gas occupies a volume of 22.4 liters. This relationship is known as the molar volume of a gas at STP and is derived from the ideal gas law.
| 5. How does the mole concept help in stoichiometry calculations? | |
Ans. The mole concept is crucial in stoichiometry calculations as it allows us to determine the ratio of reactants and products in a chemical reaction. By using the balanced equation and the mole ratios, we can calculate the amount of one substance involved in the reaction based on the amount of another substance.
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