Moles and Avogadro's Number

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Questions and Answers

Which of the following is the unit of measurement for the number of moles of a substance?

  • Molecules
  • Liters
  • Grams (correct)
  • Atoms

What is Avogadro's number?

  • The number of molecules in a liter of a substance
  • The number of atoms in a mole of a substance (correct)
  • The number of grams in a mole of a substance
  • The number of moles in a gram of a substance

What is the relationship between the number of moles and the number of particles in a substance?

  • Inversely proportional
  • Directly proportional (correct)
  • No relationship
  • Exponential relationship

True or false: Avogadro's number represents the number of atoms in one mole of a substance?

<p>True (A)</p> Signup and view all the answers

True or false: The unit of measurement for the number of moles of a substance is grams?

<p>False (B)</p> Signup and view all the answers

True or false: Moles are used to determine the mass of a substance?

<p>True (A)</p> Signup and view all the answers

Flashcards

What are Moles?

The unit of measurement for the amount of a substance in terms of the number of particles (atoms, molecules, ions, etc.).

What is Avogadro's Number?

The number of atoms, molecules, or ions in one mole of a substance, approximately 6.022 x 10^23.

Moles and Particles Relationship

As the number of moles increases, the number of particles increases proportionally based on Avogadro's number.

Moles and Mass

Moles are used to determine the amount of a substance, not its mass directly. Mass is calculated using molar mass.

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