Calculate the mass per cent of calcium, phosphorus and oxygen in calcium phosphate `Ca_(3)(PO_(4))_(2)`.

Explanation

Mass per cent of calcium `=(3xx("atomic mass of calcium"))/("molecular mass of " Ca_(3)(PO_(4))_(2))xx100`
`=(120 u)/(310u)xx100=38.71%`
Mass per cent of oxygen`=(8xx("atomic mass of oxygen"))/("molecular mass of" Ca_(3)(PO_(4))_(2))xx100`
`=(8xx16u)/(310u)xx100=41.29%`