If you have 17 grams of NaCl, how many moles of NaCl do you have?

• A. 1.0 moles
• B. 0.58 moles
• C. 2.0 moles
• D. 0.29 moles

Answer: (D)

Verified step by step guidance

1. Identify the given quantity and what is asked: You have 17 grams of NaCl and need to find the number of moles.
2. Recall the formula to convert grams to moles: \(\text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}\).
3. Determine the molar mass of NaCl by adding the atomic masses of sodium (Na) and chlorine (Cl): \(\text{molar mass of NaCl} = 22.99 + 35.45\) g/mol.
4. Substitute the given mass and the calculated molar mass into the formula: \(\text{moles} = \frac{17}{\text{molar mass of NaCl}}\).
5. Perform the division to find the number of moles of NaCl present in 17 grams.