Question

4. Calculate the mass percentage of calcium and phosphorus in Calcium phosphate?​

Answer 1

Answer:

mass percentsge of calcium is 38.77% and phosphorus is 19.97%

Answer 2

Answer:

The mass percentage of Calcium is $38.71$%.

The mass percentage of Phosphorus is $20.0$%.

Explanation:

Mass percentage : In mass percentage, the concentration is stated as the mass of solute present in gram per 100 grams of total mass of the mixture or solution.

We know that the molecular formula of Calcium phosphate is $Ca_{3} (PO)_{4}$

Its molar mass $=$ $3$ × (molar mass of $Ca$) $+2$ ×  (molar mass of $P$) $+8$ × (molar mass of $O$)

$= 3(40)+2(31)+8(16)\\= 120+62+128\\=310 g/mol$

Therefore,

Mass percentage of $Ca$ $=\frac{120}{310}$ × $100=38.71$%

Mass percentage of $P=\frac{62}{100}$ × $100=20.0$%