How many water molecules are present in 5.2 moles of H_2O?

• A. 6.02 \times 10^{23}
• B. 3.13 \times 10^{24}
• C. 1.20 \times 10^{25}
• D. 8.67 \times 10^{22}

Answer: (B)

Verified step by step guidance

1. Identify the given quantity: 5.2 moles of H_2O molecules.
2. Recall Avogadro's number, which is the number of particles (atoms, molecules, etc.) in one mole: \$6.02 \times 10^{23}$ particles/mole.
3. Set up the calculation to find the total number of water molecules by multiplying the number of moles by Avogadro's number: \(\text{Number of molecules} = 5.2 \text{ moles} \times 6.02 \times 10^{23} \text{ molecules/mole}\).
4. Perform the multiplication of the numerical values and add the exponents of 10 accordingly (do not calculate the final value here, just set up the expression).
5. Express the final answer in scientific notation to represent the total number of water molecules in 5.2 moles.