Question

Find the percentage of phosphorus in calcium phosphate

Answer 1

Answer:

Percentage of phosphorus in calcium phosphate is 20%.

Answer 2

Answer:The percentage of phosphorous in calcium phosphate is 46%.

Explanation:

In $Ca_3(PO_4)_2$, there are 2 phosphorous atoms, 3 calcium atoms and 8 oxygen atoms.

To calculate the mass percent of element in a given compound, we use the formula:

$\text{Mass percent of phosphorous}=\frac{\text{Mass of phosphorous}}{\text{Molar mass of calcium phosphate}}\times 100$

Mass of phosphorous = $31\times 2=62g$

Mass of calcium phosphate= 135 g

Putting values in above equation, we get:

$\text{Mass percent of phosphorous}=\frac{62}{135}\times 100=46\%$

Hence, the mass percent of phosphorous in calcium phosphate is 46 %.