1. Find the atomic masses:
* Barium (Ba): 137.33 g/mol
* Silicon (Si): 28.09 g/mol
* Fluorine (F): 19.00 g/mol
2. Calculate the molar mass of BaSiF6:
* Ba: 137.33 g/mol
* Si: 28.09 g/mol
* F (6 atoms): 19.00 g/mol * 6 = 114.00 g/mol
* Total molar mass: 137.33 + 28.09 + 114.00 = 279.42 g/mol
3. Convert molar mass to mass of one molecule:
* One mole contains 6.022 x 10^23 molecules (Avogadro's number).
* Mass of one molecule = (Molar mass) / (Avogadro's number)
* Mass of one BaSiF6 molecule = 279.42 g/mol / 6.022 x 10^23 molecules/mol
* Mass of one BaSiF6 molecule ≈ 4.64 x 10^-22 g
Therefore, the mass of one molecule of barium hexafluorosilicate (BaSiF6) is approximately 4.64 x 10^-22 grams.
