How many hydrogen atoms are present in 2 moles of H_2O?

• A. 6.02 × 10^{23}
• B. 2.41 × 10^{24}
• C. 2.41 × 10^{24}
• D. 2.41 × 10^{24}

Answer: (C)

Verified step by step guidance

1. Identify the number of hydrogen atoms in one molecule of water (H_2O). Since each water molecule contains 2 hydrogen atoms, this is the key to finding the total hydrogen atoms.
2. Recall that 1 mole of any substance contains Avogadro's number of molecules, which is approximately \$6.02 \times 10^{23}$ molecules per mole.
3. Calculate the total number of water molecules in 2 moles by multiplying the number of moles by Avogadro's number: \$2 \text{ moles} \times 6.02 \times 10^{23} \text{ molecules/mole}$.
4. Since each water molecule has 2 hydrogen atoms, multiply the total number of water molecules by 2 to find the total number of hydrogen atoms: \((2 \times 6.02 \times 10^{23}) \times 2\).
5. Express the final answer in scientific notation to match the given options, which will give the total number of hydrogen atoms in 2 moles of water.