Final answer:
The question omits the full formula of the compound, making it impossible to accurately determine the values of x and y. For a complete answer,
Step-by-step explanation:
To find x and y in a chromium-containing compound that is 28.59% oxygen by mass, we would first need to know the formula of the compound, which seems to have been omitted from the question.
Typically, one would start by assuming a total mass of 100 grams for the compound, allowing the percent composition by mass to directly translate into grams. With 28.59 grams of oxygen, the moles of oxygen can be calculated using oxygen's molar mass (16 g/mol).
Next, one would determine the mass of chromium and any other elements in the compound to find their respective amounts in moles.
The stoichiometry of the compound gives the ratio of moles of each element, which can then be simplified to find the empirical formula, thereby determining the values of x and y. Without a specific compound formula given, we cannot provide a definite answer for x and y.