The mass of one molecule of fluorine gas (F2) can be calculated using the atomic mass of fluorine.
The atomic mass of a single fluorine atom is approximately 19.00 atomic mass units (amu). Since a molecule of F2 consists of two fluorine atoms, we calculate the mass of the molecule by adding the mass of both atoms together:
Mass of F2 = 2 × Atomic mass of F = 2 × 19.00 amu = 38.00 amu
To convert this into grams, we can use the relation that 1 amu is equal to 1.66 × 10-24 grams. Therefore:
Mass of one molecule of F2 in grams = 38.00 amu × (1.66 × 10-24 g/amu) ≈ 6.31 × 10-23 grams.
So, the mass of one molecule of F2 is approximately 6.31 × 10-23 grams.