In the context of the mole concept, how many entities (atoms, molecules, or particles) are present in one mole?

• A. 6.022 × 10^{23}
• B. 1.67 × 10^{-24}
• C. 1.00 × 10^{6}
• D. 3.00 × 10^{8}

Answer: (A)

Verified step by step guidance

1. Understand that the mole is a fundamental unit in chemistry used to count entities such as atoms, molecules, or particles.
2. Recall that one mole is defined as the amount of substance containing exactly Avogadro's number of entities.
3. Know that Avogadro's number is a constant and is approximately \$6.022 \times 10^{23}$ entities per mole.
4. Recognize that the other numbers given (e.g., \$1.67 \times 10^{-24}\(, \)1.00 \times 10^{6}\(, \)3.00 \times 10^{8}$) do not correspond to the number of entities in a mole.
5. Therefore, the number of entities in one mole is given by Avogadro's number: \$6.022 \times 10^{23}$.