Question

calculate the molar mass of p2o5​

Answer 1

P2O5 is known as Phosphorus Pentoxide

Molar Mass of P2O5 is 141.9445

Calculation :-

(molar mass of phosphorus)*2 + (molar mass of oxygen)*5

(30.9738)*2 + (15.9994)*5

= 61.9476 + 79.997

= 141.9446

Answer 2

Given:

Given compound is $P_2O_5$

To find:

The molar mass.

Solution:

The chemical formula of phosphorus pentoxide is $P_2O_5$.

The atomic mass of the P atom is 31 grams and the atomic mass of the oxygen atom is 16 grams.

Phosphorus pentoxide contains two phosphorus and five oxygen atoms.

Hence the molar mass of phosphorus pentoxide is given as-

$31 \times 2 + 16 \times 5 \\ = 62 + 80 \\ = 142$

Hence the molar mass of phosphorus pentoxide is 142 grams.