How many grams are present in 4.5 moles of sodium fluoride (NaF)?

• A. 188.1 g
• B. 210.6 g
• C. 135.0 g
• D. 104.4 g

Answer: (A)

Verified step by step guidance

1. Identify the chemical formula of sodium fluoride, which is NaF, consisting of one sodium (Na) atom and one fluorine (F) atom.
2. Calculate the molar mass of NaF by adding the atomic masses of sodium and fluorine: use approximately 22.99 g/mol for Na and 18.998 g/mol for F, then sum them to get the molar mass of NaF.
3. Use the formula to convert moles to grams: \(\\text{mass (g)} = \\text{moles} \\times \\text{molar mass (g/mol)}\).
4. Substitute the given number of moles (4.5 moles) and the calculated molar mass of NaF into the formula.
5. Multiply the moles by the molar mass to find the mass in grams, which will give you the amount of sodium fluoride present.