To calculate the mass of atoms, you need to know the atomic mass of the element in question. In this case, K represents the chemical symbol for potassium.
The atomic mass of potassium (K) is approximately 39.10 atomic mass units (u). Therefore, to find the mass of 1.32 x 10^21 potassium atoms, you can use the following calculation:
Mass = Number of atoms x Atomic mass
Mass = 1.32 x 10^21 atoms x 39.10 u
Performing the calculation:
Mass = 51.612 x 10^21 u
Since the unit "u" represents atomic mass units, you can express the mass in scientific notation as:
Mass ≈ 5.1612 x 10^22 u