How many grams of CaC(2)O(4) will be dis...

How many grams of `CaC_(2)O_(4)` will be dissolved in 1L of distilled water to make its saturated solution ? (`K_(sp)" of " CaC_(2)O_(4)=2.5xx10^(-9)` and mol. wt. of `CaC_(2)O_(4)=128`) :

0.0064 g

0.0128 g

0.0032 g

0.0640 g

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