Answer
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Step 1:: Write down the atomic mass of fluorine.
The atomic mass of fluorine (F) is approximately 18.998 atomic mass units (amu). This value can be found on the periodic table.
Step 2:: Recall the molecular mass formula.
\text{Molar mass} = (\text{Atomic mass of A}) \times (\text{Number of atoms of A in the molecule}) + (\text{Atomic mass of B}) \times (\text{Number of atoms of B in the molecule})
Step 3:: Apply the formula to find the molar mass of F$_1$.
\text{Molar mass of F}_2 = (18.998 \text{ amu}/\text{F}) \times (2 \text{ F in F}_2) = 37.996 \text{ amu}
- Atomic mass of F (A) = 18.998 amu Plugging these values into the formula, we get:
Step 4:: Convert the atomic mass units to grams per mole.
\text{Molar mass of F}_2 = 37.996 \text{ g/mol}
To express the molar mass in grams per mole (g/mol), recall that 1 amu is approximately equal to 1 g/mol:
Final Answer
The molar mass of fluorine gas (F$_1$) is approximately 37.996 g/mol.
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