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The molar mass of potassium, K, is [tex]$39.10 \, \text{g/mol}$[/tex].
How many grams of potassium are in 3.25 moles of potassium?
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].
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