What is the relationship between amount of substance (n) and number of particles (N)?
The amount of substance (n) equals the number of particles (N) divided by Avogadro's constant (NA). Formula: n = (N)/(N A) Applicable conditions: Applicable to…
Syllabus path: Fundamental Chemical Concepts and Calculations › Mole Calculations
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CSCA Chemistry Formula Reference
Formula and explanation
The amount of substance (n) equals the number of particles (N) divided by Avogadro's constant (NA). Formula: n = (N)/(N A) Applicable conditions: Applicable to any microscopic particles (atoms, molecules, ions, etc.). Explanation: Avogadro's constant NA ≈ 6.022 × 10²³ mol⁻¹.
Related tutorial and examples
Mole Calculations
Core Concepts: Mole Calculations This section is the "heart" of chemical calculations. Whether the question asks for mass, volume, or particle count, the path to the solution almost always requires finding the Amount of Substance ( n ) first. Remember the golden rule: "Convert ev…
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