To determine the atomic masses of element Y, we need to first find the number of moles of element X and element Y based on their respective masses.
Given: Mass of element X = 27.22 g Mass of element Y = 84.10 g Atomic mass of element X = 33.42 amu
To find the number of moles of element X, we use the formula:
Number of moles = Mass / Molar mass
Molar mass of element X = 33.42 g/mol
Number of moles of X = 27.22 g / 33.42 g/mol = 0.814 moles
Since the compound XY is formed by the combination of X and Y, the ratio of their moles in the compound is 1:1. This means that the number of moles of Y is also 0.814 moles.
Now, to find the atomic mass of Y, we divide the mass of Y by the number of moles:
Atomic mass of Y = Mass of Y / Number of moles of Y
Atomic mass of Y = 84.10 g / 0.814 mol = 103.25 g/mol
Therefore, the atomic mass of element Y is approximately 103.25 g/mol.