please solve

QUESTION number 9..

T h e   s o l u b i l i t y   P b l 2   a t   25 ° C   i s   0 . 7   g   L - 1 .   T h e   s o l u b i l i t y   p r o d u c t   o f   P b l 2   a t   t h i s   t e m p e r a t u r e   i s   M o l a r   m a s s   o f   P b l 2   =   461 . 2   g   m o l - 1 A .   1 . 40   ×   10 - 9 B .   14 . 0   ×   10 - 9 C .   0 . 14   ×   10 - 9 D .   140   ×   10 - 9

Answer should be (b) 14 X 10 ^-9 when rounded off.


 

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