Question

How many atom are in the following

Answer 1

Answer:

i)17 atoms

    2 aluminium atoms

     3 sulphur atoms

      12 oxygen atoms

ii) 5 atoms

   1 phosphorus atom

    4 oxygen atoms

Answer 2

i) Al2(SO4)3

number of aluminium (Al) = 2

number of sulphur (S) = 3

number of oxygen (O) = 12

Total number of atoms = [ 2 + 3 + 12 ] = 17

Hence, there are 17 atoms in Al2(SO4)3....

ii) PO4 ^ -3

number of phosphorus (P) = 1

number of oxygen (O) = 4

Total number of atoms = [ 1 + 4 ] = 5

Hence, there are 5 atoms in PO4 ........

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