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The molality of solution containing ...

The molality of solution containing 15.20 g of urea ( molar mass = 60 ) dissolved in 150 g of water is ______.

A

`1.689 mol kg ^(-1)`

B

`0.1689 mol kg ^(-1)`

C

`0.5922 mol kg ^(-1)`

D

`0.2533 mol kg ^(-1)`

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The correct Answer is:
A
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