Final answer:
Without a complete value for the number of molecules, it is impossible to calculate the exact number of moles of sulfur hexachloride. The correct approach involves dividing the number of molecules by Avogadro's number.
Step-by-step explanation:
The question asks how many moles are present in a given number of molecules of sulfur hexachloride. To find the number of moles, we use Avogadro's number (6.022 × 1023 molecules/mol). By dividing the number of molecules by Avogadro's number, we get the number of moles.
Since the question statement does not specify the number with the correct scientific notation, let us assume it is 2.5 × 10x molecules. The formula used will be:
Number of moles = (Number of molecules) / (Avogadro's number)
However, since we do not have the complete value (2.5 × 10x is not fully specified), we cannot give a precise answer. If the total number of molecules was given accurately, like in the example of oxygen atoms in sulfuric acid provided in the question (4.89 × 1025 atoms), the calculation would involve dividing by Avogadro's number to find the moles of sulfuric acid.