What is the molar mass if diacidic organ...

What is the molar mass if diacidic organic Lewis base (B), if 12g of its chloroplatinate salt `(BH_(2)PtCl_(6))` on ignition produced 5g residue of Pt?

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What is the molar mass of diacidic organic Lewis base, if 12 g of chloroplatinate salt on ignition produced 5 g residue ?

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