Choose the correct option regarding number of particles associated with one mole of a substance:
Correct answer: D. 6.02 x 10^23
- A. 6.03 x 10^23
- B. 6.01 x 10^-19
- C. 6.02 x 10^-23
- D. 6.02 x 10^23
Explanation
One mole of a substance always contains 6.02 x 1023 particles, this is Avogadro's number. (Fact) Avogadro's number, also known as Avogadro's constant, is the number of entities (usually atoms or molecules) in one mole of a substance.
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About Fundamental Concepts of Chemistry
Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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