Number of gram atoms of oxygen present in 0.3 mole of is

CHEMISTRY · Single correct · A Level · Chemistry · Amount of substance · Amount of substance

Problem

Number of gram atoms of oxygen present in 0.3 mole of

(COOH)_2 \cdot 2H_2O

is (1) 9 (2) 18 (3) 0.9 (4) 1.8