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150 ml of a solution containing 5 millim...

150 ml of a solution containing 5 millimoles of A (specific gravity = `1.2`) is mixed with 250 ml of another solution containing 10 millimoles of A (specific gravity = `1.4`). If on mixing the density of the solution becomes `(5.3)/(4.5)gm//ml`, then what will be molartiy of A in the final solution?

A

`(1)/(30)M`

B

`(3)/(80)M`

C

`(1)/(20)M`

D

`(4)/(85)`

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The correct Answer is:
A
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