Here's how to calculate the number of moles in 76 grams of fluorine:

1. Find the molar mass of fluorine (F):

* The molar mass of fluorine is approximately 19 g/mol (you can find this on the periodic table).

2. Use the formula: moles = mass / molar mass

* moles = 76 g / 19 g/mol

* moles = 4 moles

Therefore, there are 4 moles of fluorine in 76 grams.