A mineral consists of an equimolar mixtu...

A mineral consists of an equimolar mixture of the carbonates of two bivalent metals. One metal is present to the extent of 12.5% by mass.2.8 g of the mineral on heating lost 1.32g of `CO_(2)`. What is the % by mass of the other metal ?

87.5

35.71

65.11

23.21

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