The chemical formula for chromium (III) sulfate is Cr₂(SO₄)₃. Here's how to break it down:

* Chromium (III): This indicates that chromium has a +3 charge (Cr³⁺).

* Sulfate: This is a polyatomic ion with the formula SO₄²⁻.

To balance the charges, we need two chromium ions (2 x +3 = +6) and three sulfate ions (3 x -2 = -6). This gives us the final formula Cr₂(SO₄)₃.