Answer :
To calculate the number of moles in a piece of potassium with a mass of 1.564 grams, you can use the formula:
[tex]\[ \text{moles} = \frac{\text{mass}}{\text{molar mass}} \][/tex]
Here are the steps:
1. Identify the Mass of Potassium:
The mass is given as 1.564 grams.
2. Identify the Molar Mass of Potassium:
The relative atomic mass of potassium is 39.1 grams per mole.
3. Apply the Formula:
Plug the values into the formula to find the number of moles:
[tex]\[ \text{moles} = \frac{1.564 \, \text{g}}{39.1 \, \text{g/mol}} \][/tex]
4. Calculate the Result:
Perform the division to find the number of moles:
[tex]\[ \text{moles} = 0.04 \][/tex]
Thus, the piece of potassium contains approximately 0.04 moles.
[tex]\[ \text{moles} = \frac{\text{mass}}{\text{molar mass}} \][/tex]
Here are the steps:
1. Identify the Mass of Potassium:
The mass is given as 1.564 grams.
2. Identify the Molar Mass of Potassium:
The relative atomic mass of potassium is 39.1 grams per mole.
3. Apply the Formula:
Plug the values into the formula to find the number of moles:
[tex]\[ \text{moles} = \frac{1.564 \, \text{g}}{39.1 \, \text{g/mol}} \][/tex]
4. Calculate the Result:
Perform the division to find the number of moles:
[tex]\[ \text{moles} = 0.04 \][/tex]
Thus, the piece of potassium contains approximately 0.04 moles.
