Difference between revisions of "Avogadro Constant"
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| − | The [[Avogadro Constant]] is the number of atoms in 12 grams of carbon-12, approximately < | + | The [[Avogadro Constant]] is the number of atoms in 12 grams of carbon-12, approximately '''6.02x10<sup>23</sup>''' atoms per [[mole]]. |
===About the Avogadro Constant=== | ===About the Avogadro Constant=== | ||
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*The [[Avogadro Constant|Avogadro constant]] is used to calculate the number of [[particle]]s in a given amount of substance. | *The [[Avogadro Constant|Avogadro constant]] is used to calculate the number of [[particle]]s in a given amount of substance. | ||
*One [[mole]] of any substance contains [[Avogadro Constant|Avogadro]]'s number of particles. | *One [[mole]] of any substance contains [[Avogadro Constant|Avogadro]]'s number of particles. | ||
| − | *The value of the [[Avogadro Constant|Avogadro constant]] is 6. | + | *The value of the [[Avogadro Constant|Avogadro constant]] is '''6.02x10<sup>23</sup>''' mol<sup>-1</sup>. |
*It is used in determining the [[Molar Mass|molar mass]] of substances. | *It is used in determining the [[Molar Mass|molar mass]] of substances. | ||
*The [[Avogadro Constant|Avogadro constant]] is essential for converting between [[atom]]ic scale and macroscopic scale measurements. | *The [[Avogadro Constant|Avogadro constant]] is essential for converting between [[atom]]ic scale and macroscopic scale measurements. | ||
*The [[Avogadro Constant|Avogadro constant]] is named after the Italian scientist [[Amedeo Avogadro]], who first proposed the concept. | *The [[Avogadro Constant|Avogadro constant]] is named after the Italian scientist [[Amedeo Avogadro]], who first proposed the concept. | ||
Latest revision as of 10:53, 22 May 2024
Contents
Key Stage 4
Meaning
The Avogadro Constant is the number of atoms in 12g of Carbon. 6.02x1023 atoms per mole.
About the Avogadro Constant
- The Avogadro Constant is used to state the number of atoms or molecules in a mole of a substance.
- The Avogadro Constant is normally written in standard form as 6.02x1023 = 602,000,000,000,000,000,000,000 correct to 3 Significant Figures.
- 1 mole of an element contains 6.02x1023 atoms of that element.
- 1 mole of a molecule contains 6.02x1023 molecules.
Extra Information
References
AQA
- Avogadro constant, page 106, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
- Avogadro constant, page 112, GCSE Chemistry, CGP, AQA
- Avogadro constant, page 42, GCSE Chemistry; The Revision Guide, CGP, AQA
- Avogadro constant, page 65, GCSE Chemistry, Hodder, AQA
- Avogadro constant, pages 178-9, GCSE Combined Science Trilogy 1, Hodder, AQA
- Avogadro constant, pages 62-63, GCSE Chemistry; Third Edition, Oxford University Press, AQA
Edexcel
- Avogadro constant, page 220, GCSE Combined Science, Pearson Edexcel
- Avogadro constant, page 76, GCSE Chemistry, Pearson, Edexcel
- Avogadro’s constant, page 28, GCSE Chemistry; The Revision Guide, CGP, Edexcel
- Avogadro’s constant, page 91, GCSE Combined Science; The Revision Guide, CGP, Edexcel
- Avogadro’s constant, pages 85, 86, GCSE Chemistry, CGP, Edexcel
OCR
Key Stage 5
Meaning
The Avogadro Constant is the number of atoms in 12 grams of carbon-12, approximately 6.02x1023 atoms per mole.
About the Avogadro Constant
- The Avogadro constant is a fundamental constant in chemistry and physics.
- The Avogadro constant is used to calculate the number of particles in a given amount of substance.
- One mole of any substance contains Avogadro's number of particles.
- The value of the Avogadro constant is 6.02x1023 mol-1.
- It is used in determining the molar mass of substances.
- The Avogadro constant is essential for converting between atomic scale and macroscopic scale measurements.
- The Avogadro constant is named after the Italian scientist Amedeo Avogadro, who first proposed the concept.