Molarity and molality of a solution of a...

Molarity and molality of a solution of an liquid (mol.mass `=50`) in aqueous solution is `9` and 10 respectively. what is the density of solution ?

A

` 1g//"cc"`

B

` 0.95 g// "cc"`

C

` 1.05 g//"cc"`

D

` 1.35 g//"cc"`

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