The atomic mass of potassium is 39.1. What is the mass of 6.022 × 10²³ atoms of potassium?

The atomic mass of potassium is approximately 39.1 grams per mole. To find the mass of 6.022 × 10²³ atoms of potassium, we can use Avogadro's number, which tells us that one mole of any substance contains this number of atoms.

Calculating the Mass

Since 6.022 × 10²³ atoms is equivalent to one mole of potassium, we can directly use the atomic mass:

• Atomic mass of potassium: 39.1 g/mol
• Number of atoms: 6.022 × 10²³ atoms (1 mole)

Final Calculation

The mass of 6.022 × 10²³ atoms of potassium is simply:

Mass = 39.1 grams

Therefore, the mass of 6.022 × 10²³ atoms of potassium is 39.1 grams.