If you have 1 mole of NaCl, how many NaCl formula units does it contain?

• A. 1.00 × 10^{22}
• B. 3.01 × 10^{23}
• C. 1.00 × 10^{24}
• D. 6.022 × 10^{23}

Answer: (D)

Verified step by step guidance

1. Understand that 1 mole of any substance contains Avogadro's number of formula units, atoms, or molecules. Avogadro's number is a fundamental constant in chemistry.
2. Recall the value of Avogadro's number, which is approximately \$6.022 \times 10^{23}$ entities per mole.
3. Since the problem asks for the number of NaCl formula units in 1 mole of NaCl, you directly use Avogadro's number as the count of formula units.
4. Write the relationship as: Number of formula units = (number of moles) \(\times\) (Avogadro's number), or mathematically, \(N = n \times N_A\).
5. Substitute \(n = 1\) mole and \(N_A = 6.022 \times 10^{23}\) formula units/mole to find the total number of NaCl formula units.