1.

The number of gram atoms of oxygen present in 0.25 g mole of (COOH)_2 2H_2Ois :

Answer»

0.125
0.5
1
1.5

Solution :1 MOLE of `(COOH)_2 . 2H_2O` CONTAINS = 6 gatom of oxygen
0.25 mole of `(COOH)_2 . 2H_2O` contains
` = 6 XX 0.25 = 1.5 ` grams atoms


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