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?

[?] g K



Answer :

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].