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4.08g of a mixture of BaO and an unknown carbonate MCO3 was heated strongly. The residue...

4.08g of a mixture of BaO and an unknown carbonate MCO3 was heated strongly. The residue weighed 3.64g.This was dissolved in 100 mL of HCL.The excess of acid required 16mL of 2.5 NaOH solution for complete neutralisation. Identify the metal M.?

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