What is Avogadro's number expressed in scientific notation?

• A. 6.02 \times 10^{23}
• B. 3.00 \times 10^{8}
• C. 9.11 \times 10^{-31}
• D. 1.67 \times 10^{-24}

Answer: (A)

Verified step by step guidance

1. Understand that Avogadro's number represents the number of particles (atoms, molecules, or ions) in one mole of a substance.
2. Recall that Avogadro's number is a fundamental constant in chemistry used to relate the macroscopic scale of substances to the microscopic scale of atoms and molecules.
3. Express Avogadro's number in scientific notation, which is a way to write very large or very small numbers as a product of a number between 1 and 10 and a power of 10.
4. Identify the correct scientific notation for Avogadro's number as \$6.02 \times 10^{23}$, which means approximately 6.02 followed by 23 zeros.
5. Compare this value with the other options to confirm that \$6.02 \times 10^{23}$ is the correct representation of Avogadro's number.