Final answer:
The chemical formula for chromium(VI) sulfate is Cr2(SO4)3, formed by balancing the 6+ charge of two chromium ions with the combined 6- charge of three sulfate ions.
Step-by-step explanation:
The chemical formula for chromium(VI) sulfate is Cr2(SO4)3. This compound is composed of the chromium(VI) ion and the sulfate ion. Chromium(VI) has a 6+ charge, represented as Cr6+, and the sulfate ion has a 2- charge, denoted as SO42-. When these ions combine to form an ionic compound, the charges must balance out, which can be achieved by having two chromium ions for every three sulfate ions, effectively balancing the charge to zero.