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A compound AB completely decomposes into...

A compound AB completely decomposes into A and B on heating. 50g of AB, on strong heating gave 40g of A. how much quantity of AB should be decomposed by heating to obtain 2.5 g of B? How much quantity of A will be produced in the process?

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The correct Answer is:
12.5 g AB is to be decomposed 10.0g of A will be produced.
`ABrarrA+B`
50g 40g 10g
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