6.8 gm of H2O2 is present in 500 ml of an aqueous solution. When 10ml of this solution is decomposed, what is the S.T.P. volume of oxygen obtained

M = 0.4Mvolume strength = M x 11.2                       = 0.4 x 11.2                       = 4.484.48 volume strength of H2O2 means1ml of H2O2 solution gives → 4.48ml of,O210ml of H2O2 solution gives → ??ml  of O2Therefore 10ml, 4.48(W/V%) volume strength of H2O2 solution gives 44.8ml of O2 at STP.