Answer:
52.5%.
Step-by-step explanation:
The formula for aluminum phosphate is => AlPO₄
Next, we shall determine the molar mass of aluminum phosphate, AlPO₄. This can be obtained as follow:
Molar mass of AlPO₄ = 27 + 31 + (16×4)
= 27 + 31 + 64
= 122 g/mol
Next, we shall determine the mass of oxygen (O) in AlPO₄. This can be obtained as follow:
There are 4 atoms of O in AlPO₄.
Mass of O = 4 × 16 = 64 g
Finally, we shall determine the percent composition of oxygen in aluminum phosphate, AlPO₄. This can be obtained as follow:
Mass of O = 64 g
Molar mass of AlPO₄ = 122 g/mol
Percentage composition of oxygen =?
Percentage composition = mass of element/Molar mass of compound ×100
Percentage composition = 64/122 × 100
Percentage composition = 52.5%
Therefore, the percent composition of oxygen in aluminum phosphate, AlPO₄ is 52.5%