Here's how to determine the empirical formula of the compound:

1. Convert masses to moles:

* Tin (Sn): 5.28 g Sn / 118.71 g/mol Sn = 0.0445 mol Sn

* Fluorine (F): 3.37 g F / 19.00 g/mol F = 0.177 mol F

2. Find the mole ratio:

Divide each mole value by the smallest mole value:

* Sn: 0.0445 mol / 0.0445 mol = 1

* F: 0.177 mol / 0.0445 mol = 4

3. Write the empirical formula:

The mole ratio tells us the empirical formula is SnF₄.