To calculate the average mass of one zinc (Zn) atom in grams, you need to know the atomic mass of zinc in atomic mass units (u) and convert it to grams using Avogadro's number. The atomic mass of zinc is approximately 65.38 u.
Avogadro's number, denoted as NA, is the number of atoms or molecules in one mole of a substance, and its value is approximately 6.02214076 x 10^23 atoms/molecules per mole.
To convert the atomic mass of zinc from atomic mass units (u) to grams (g), you can use the following calculation:
Average mass of one Zn atom (in grams) = Atomic mass of Zn (in atomic mass units) / Avogadro's number
Plugging in the values:
Average mass of one Zn atom (in grams) = 65.38 u / (6.02214076 x 10^23 atoms/mole)
Evaluating the calculation gives:
Average mass of one Zn atom ≈ 1.083 x 10^-22 grams
Therefore, the average mass of one zinc atom is approximately 1.083 x 10^-22 grams.