Percentage composition of zinc in sodium zincate

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Solution

Dear Student,
Na=23, Zn=65 and O=16
So, mass of Na₂ZnO₂
=223+65+216
=46+65+32
=143 u
So, percentage composition of zinc
=[(65/143)100]%
=(0.4545100)%
=45.45%
Regards

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