Answer:
The atomic mass of y is 35.44 g/mol
Step-by-step explanation:
Step 1: Data given
The atomic mass of element x is 22.99 amu
A 22.42 g sample of x combines with 34.56 g of another element y to form a compound xy
Step 2: The equation X + Y → XY
Step 3: Calculate moles X
Moles X = mass / atomic mass
Moles X = 22.42 grams / 22.99 amu
Moles X = 0.9752 moles
Step 4: Calculate atomic mass Y
MMy = 34.56 grams / 0.9752 moles
MMY = 35.44 g/mol
The atomic mass of y is 35.44 g/mol