Answer :
n(Ca₃(PO₄)₂)=0.25 mol
n(O)=8n(Ca₃(PO₄)₂)
N(O)=Nₐn(O)=8Nₐn(Ca₃(PO₄)₂)
N(O)=8*6.022*10²³ mol⁻¹*0.25 mol=1.2044*10²⁴
n(O)=8n(Ca₃(PO₄)₂)
N(O)=Nₐn(O)=8Nₐn(Ca₃(PO₄)₂)
N(O)=8*6.022*10²³ mol⁻¹*0.25 mol=1.2044*10²⁴