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Avogadro constant, NA is the number of molecules in one mole of a substance and its value (NA) is
- a)6.02 × 1023 mol
- b)6.02 × 1013 mol–1
- c)6.02 × 10–23 mol–1
- d)4.02 × 10–23 mol–1
Correct answer is option 'A'. Can you explain this answer?
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Avogadro constant, NA is the number of molecules in one mole of a sub...
Avogadro constant, NA is the number of molecules in one mole of a substance and its value (NA) is 6.02 × 1023 mol
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Avogadro constant, NA is the number of molecules in one mole of a sub...
Understanding Avogadro's Constant
Avogadro's constant (NA) is a fundamental value in chemistry that defines the number of constituent particles, usually atoms or molecules, contained in one mole of a substance.
Value of Avogadro's Constant
- The correct value of NA is 6.02 × 10^23 mol–1.
- This means that one mole of any substance contains approximately 6.02 x 10^23 particles.
Importance of Avogadro's Constant
- Molecular Counting: Avogadro's constant allows chemists to convert between the mass of a substance and the number of molecules it contains. This is crucial for stoichiometric calculations in chemical reactions.
- Mole Concept: The mole is a key unit in chemistry that helps in quantifying substances. It simplifies the process of dealing with large numbers of atoms or molecules.
Why Other Options are Incorrect
- Option B (6.02 × 10^13 mol–1): This value is incorrect as it is significantly lower than the accepted value.
- Option C (6.02 × 10–23 mol–1): This is much too small and does not represent the number of molecules in a mole.
- Option D (4.02 × 10–23 mol–1): Similar to option C, this value is also incorrect and far too small.
Conclusion
In summary, Avogadro's constant is vital for understanding chemical quantities and conversions. Its value of 6.02 × 10^23 mol–1 allows chemists to effectively measure and react substances in a lab setting.
Avogadro's constant (NA) is a fundamental value in chemistry that defines the number of constituent particles, usually atoms or molecules, contained in one mole of a substance.
Value of Avogadro's Constant
- The correct value of NA is 6.02 × 10^23 mol–1.
- This means that one mole of any substance contains approximately 6.02 x 10^23 particles.
Importance of Avogadro's Constant
- Molecular Counting: Avogadro's constant allows chemists to convert between the mass of a substance and the number of molecules it contains. This is crucial for stoichiometric calculations in chemical reactions.
- Mole Concept: The mole is a key unit in chemistry that helps in quantifying substances. It simplifies the process of dealing with large numbers of atoms or molecules.
Why Other Options are Incorrect
- Option B (6.02 × 10^13 mol–1): This value is incorrect as it is significantly lower than the accepted value.
- Option C (6.02 × 10–23 mol–1): This is much too small and does not represent the number of molecules in a mole.
- Option D (4.02 × 10–23 mol–1): Similar to option C, this value is also incorrect and far too small.
Conclusion
In summary, Avogadro's constant is vital for understanding chemical quantities and conversions. Its value of 6.02 × 10^23 mol–1 allows chemists to effectively measure and react substances in a lab setting.
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Avogadro constant, NA is the number of molecules in one mole of a substance and its value (NA) isa)6.02 × 1023 molb)6.02 × 1013 mol–1c)6.02 × 10–23 mol–1d)4.02 × 10–23 mol–1Correct answer is option 'A'. Can you explain this answer?
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Avogadro constant, NA is the number of molecules in one mole of a substance and its value (NA) isa)6.02 × 1023 molb)6.02 × 1013 mol–1c)6.02 × 10–23 mol–1d)4.02 × 10–23 mol–1Correct answer is option 'A'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Avogadro constant, NA is the number of molecules in one mole of a substance and its value (NA) isa)6.02 × 1023 molb)6.02 × 1013 mol–1c)6.02 × 10–23 mol–1d)4.02 × 10–23 mol–1Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Avogadro constant, NA is the number of molecules in one mole of a substance and its value (NA) isa)6.02 × 1023 molb)6.02 × 1013 mol–1c)6.02 × 10–23 mol–1d)4.02 × 10–23 mol–1Correct answer is option 'A'. Can you explain this answer?.
Avogadro constant, NA is the number of molecules in one mole of a substance and its value (NA) isa)6.02 × 1023 molb)6.02 × 1013 mol–1c)6.02 × 10–23 mol–1d)4.02 × 10–23 mol–1Correct answer is option 'A'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Avogadro constant, NA is the number of molecules in one mole of a substance and its value (NA) isa)6.02 × 1023 molb)6.02 × 1013 mol–1c)6.02 × 10–23 mol–1d)4.02 × 10–23 mol–1Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Avogadro constant, NA is the number of molecules in one mole of a substance and its value (NA) isa)6.02 × 1023 molb)6.02 × 1013 mol–1c)6.02 × 10–23 mol–1d)4.02 × 10–23 mol–1Correct answer is option 'A'. Can you explain this answer?.
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