The molecular weight of compounds
a.Na2so4
b.Na3po4. 12 h2o
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Explanation:
Na2SO4 molecular weight is
22*2+32+16*4
44+32+64
=142
Na3PO4.12H2o molecular weight is
22*2+16+30+16*4+12*18
44+46+64+216
370
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