Approximately how many particles are present in 2 moles of a substance?

• A. 6.02 × 10^{23}
• B. 2.00 × 10^{24}
• C. 3.01 × 10^{23}
• D. 1.20 × 10^{24}

Answer: (D)

Verified step by step guidance

1. Recall that one mole of any substance contains Avogadro's number of particles, which is approximately \$6.02 \times 10^{23}$ particles per mole.
2. To find the number of particles in 2 moles, multiply the number of moles by Avogadro's number: \(\text{Number of particles} = 2 \text{ moles} \times 6.02 \times 10^{23} \text{ particles/mole}\).
3. Perform the multiplication of the numerical coefficients: \$2 \times 6.02 = 12.04$.
4. Combine the result with the power of ten: \$12.04 \times 10^{23}$.
5. Express the answer in proper scientific notation by adjusting the coefficient to be between 1 and 10: \$1.204 \times 10^{24}$ particles.