How many moles of sodium chloride are there in 125 grams of sodium chloride? The molecular mass of sodium chloride is 58.44 g/mole.

1. Break Down the Problem

To find the number of moles of sodium chloride (NaCl) in 125 grams, we will use the following relationship:

$\text{Number of moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mole)}}$

2. Relevant Concepts

• Given:
  • Mass of sodium chloride (NaCl) = 125 grams
  • Molar mass of sodium chloride (NaCl) = 58.44 g/mole

3. Analysis and Detail

We will substitute the given values into the formula:

$\text{Number of moles} = \frac{125 \text{ g}}{58.44 \text{ g/mole}}$

Now, we will calculate the number of moles:

$\text{Number of moles} \approx 2.141 \text{ moles}$

4. Verify and Summarize

Let's verify the calculation:

Calculating: $\frac{125}{58.44} \approx 2.141$

This verifies (rounded to three decimal places) that the calculation is correct.

Final Answer

Therefore, there are approximately 2.141 moles of sodium chloride in 125 grams of sodium chloride.