How many atoms of hydrogen are present in 3.02 × 10^{22} molecules of NH_3?

• A. 3.02 × 10^{22}
• B. 6.04 × 10^{22}
• C. 1.01 × 10^{22}
• D. 9.06 × 10^{22}

Answer: (D)

Verified step by step guidance

1. Identify the number of hydrogen atoms in one molecule of NH_3. Since NH_3 has 3 hydrogen atoms per molecule, each molecule contains 3 hydrogen atoms.
2. Write down the given number of NH_3 molecules: 3.02 \times 10^{22} molecules.
3. To find the total number of hydrogen atoms, multiply the number of NH_3 molecules by the number of hydrogen atoms per molecule using the formula: \(\text{Total H atoms} = \text{Number of NH}_3 \text{ molecules} \times 3\).
4. Set up the multiplication: \$3.02 \times 10^{22} \times 3$.
5. Perform the multiplication of the coefficients and add the exponents of 10 accordingly to find the total number of hydrogen atoms.