Avogadro's number is the number of particles present in:
Correct answer: E. 1 mole
- A. 1 dm3 of molecule
- B. Mass of one molecule
- C. 1g of molecule
- D. 1g atom
- E. 1 mole
Explanation
Avogadro's number is the number of particles present in 1 mole of a substance.A mole is a unit of measurement used in chemistry to count the number of atoms, molecules, or other particles in a substance. It is defined as the amount of a substance that contains as many atoms, molecules, or other particles as there are atoms in exactly 12 grams of carbon-12.Avogadro's number is approximately equal to 6.022140857 × 1023. This means that there are approximately 6.022140857 × 1023 atoms, molecules, or other particles in 1 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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