Question

How to deduce molecular mass of AlPO4

Answer 1

molecular mass of Al = 27u

moleular mass of Phosphate = 31 + 64 = 95u

molecular mass of AlPO₄ = 27 + 95

                                        = 122 u

Answer 2

Answer:

122u.

Explanation:

AL=Aluminium

P=phosphorus

O=oxygen

atomic masses:

AL=27

P=31

O=16

number of atoms in molecule:

AL=1,P=1,O=4

molecular mass of ALPO4=sum of constituent atomic masses

=(atomic mass of Al)×1+(Atomic mass of P)×1+(atomic mass of O)×4

=(27×1)+(31×1)+(16×4)

=27+31+64

=122 u.