Answer:
To determine the compound based on its composition by mass, we need more information about the elements present in the compound.
The composition by mass of a compound indicates the relative proportions of the elements that make up the compound. For example, if the composition by mass of a compound is 85.6%, it means that 85.6% of the compound's mass is made up of one or more elements.
Without knowing the specific elements present in the compound, it's not possible to determine the compound itself.
If you have additional information about the elements present in the compound, please provide it, and I can help you identify the compound. Alternatively, if you have a chemical formula or any other relevant details, please share them so we can proceed with identifying the compound.
