Question

Calculate the mass percentage of calcium and phosphours in calcium phosphate

Answer 1

Molecular formula of calcium phosphate is Ca

3

(PO

4

)

2

.

Its molar mass is 3(40)+2(31)+8(16)=310 g/mol.

Percent of calcium =

310

120

×100=38.71%

Percent of phosphorus =

310

62

×100=20.0%

Percent of oxygen =

310

128

×100=41.29%

Hope it helps⊂(◉‿◉)つ

Answer 2

The mass percentage of calcium in calcium phosphate =

$120310×100=38.71.$

Similarly, the mass percentage of phosphorus in calcium phosphate =

$62310×100=20.$