Question

How many total atoms are in 0.510 g of P2O5?

Answer 1

Molar mass of P₂O₅ $=141.9$

Avogadro's constant $=6.022×10^{23}$

Number of atoms in one molecule$=7$

Total atoms

$\frac{0.510}{141.9}×6.022×10^{23}×7$

$=1.515×10^{22}$ Atoms