Which of the following masses represents 0.500 mol of NaCl?

• A. 58.4 g
• B. 29.2 g
• C. 23.0 g
• D. 14.6 g

Answer: (B)

Verified step by step guidance

1. Identify the molar mass of NaCl by adding the atomic masses of sodium (Na) and chlorine (Cl). Sodium has an atomic mass of approximately 22.99 g/mol, and chlorine has an atomic mass of approximately 35.45 g/mol.
2. Calculate the molar mass of NaCl using the formula: \(\text{Molar mass of NaCl} = 22.99 + 35.45\) g/mol.
3. Use the relationship between moles, molar mass, and mass: \(\text{mass} = \text{moles} \times \text{molar mass}\).
4. Substitute the given number of moles (0.500 mol) and the molar mass of NaCl into the equation: \(\text{mass} = 0.500 \times \text{molar mass of NaCl}\).
5. Calculate the mass from the above expression to find which given mass corresponds to 0.500 mol of NaCl.