Question

Molar Mass worksheet

Determine the molar mass for the following elements:

Ca Xe K



Fe Au O



Bi Zr Hs

Answer 1

Here are the molar masses (approximate atomic weights) in g·mol⁻¹:

- Ca (calcium): 40.08 g/mol
- Xe (xenon): 131.29 g/mol
- K (potassium): 39.10 g/mol

- Fe (iron): 55.85 g/mol
- Au (gold): 196.97 g/mol
- O (oxygen): 16.00 g/mol

- Bi (bismuth): 208.98 g/mol
- Zr (zirconium): 91.22 g/mol
- Hs (hassium): ≈ 269 g/mol (no stable natural isotopes; value depends on the synthesized isotope—use the mass number of the isotope, commonly ≈269 u)

Let me know if you want more significant figures or values from a specific periodic table source.