Answer :

To determine the mass of [tex]\(0.359\)[/tex] moles of potassium chloride (KCl), we use the molar mass of KCl as a conversion factor. Here are the steps for the calculation:

1. Identify the given information:
- Number of moles of KCl: [tex]\(0.359\)[/tex] mol
- Molar mass of KCl: [tex]\(74.55 \, \text{g/mol}\)[/tex]

2. Set up the calculation using the formula:
[tex]\[ \text{mass} = \text{moles} \times \text{molar mass} \][/tex]
- In this case:
[tex]\[ \text{mass}_{\text{KCl}} = 0.359 \, \text{mol} \times 74.55 \, \text{g/mol} \][/tex]

3. Perform the multiplication to find the mass:
[tex]\[ \text{mass}_{\text{KCl}} = 0.359 \times 74.55 \][/tex]

4. Calculate the result:
[tex]\[ \text{mass}_{\text{KCl}} = 26.76345 \, \text{g} \][/tex]

Therefore, the mass of [tex]\(0.359\)[/tex] moles of potassium chloride (KCl) is [tex]\(26.76345\)[/tex] grams.