Which value represents the number of particles in 1 mol of a substance?

• A. 22.4
• B. 6.022 × 10^{23}
• C. 3.00 × 10^{8}
• D. 1.008

Answer: (B)

Verified step by step guidance

1. Understand that the question asks for the number of particles in 1 mole of any substance, which is a fundamental constant in chemistry known as Avogadro's number.
2. Recall that 1 mole of a substance contains exactly the same number of particles (atoms, molecules, ions, etc.) as there are atoms in 12 grams of carbon-12.
3. Identify Avogadro's number, which is the value representing the number of particles in 1 mole, and is approximately \$6.022 \times 10^{23}$ particles per mole.
4. Recognize that the other values given (22.4, \$3.00 \times 10^{8}\(, and 1.008) correspond to different concepts: 22.4 is the volume in liters of 1 mole of an ideal gas at STP, \)3.00 \times 10^{8}$ m/s is the speed of light, and 1.008 is the atomic mass of hydrogen.
5. Conclude that the correct value representing the number of particles in 1 mole of a substance is \$6.022 \times 10^{23}$, known as Avogadro's number.