To determine the mass of potassium in grams given the number of moles and the molar mass, follow these steps:
1. Identify the given information:
- Moles of potassium: [tex]\(3.25\)[/tex] moles
- Molar mass of potassium: [tex]\(39.10 \, \text{g/mol}\)[/tex]
2. Understand the relationship between moles and mass:
The mass of a substance in grams can be calculated by multiplying the number of moles by the molar mass of the substance.
3. Set up the formula:
[tex]\[
\text{Mass of potassium (g)} = \text{Moles of potassium} \times \text{Molar mass of potassium}
\][/tex]
Plugging in the values we have:
[tex]\[
\text{Mass of potassium (g)} = 3.25 \, \text{moles} \times 39.10 \, \text{g/mol}
\][/tex]
4. Perform the multiplication:
[tex]\[
\text{Mass of potassium (g)} = 127.075 \, \text{g}
\][/tex]
So, the mass of potassium in 3.25 moles is [tex]\(127.075 \, \text{grams}\)[/tex].
