Question

100ml of a sample of H2O2 by dissociation yielded 560 ml O2 at NTP. The molarity and volume strength
of the sample of H2O2 is respectively
1) 0.5 and 5.6
2) 1 and 11.2
3) 10 and 112
4) 20 and 224

Answer 1

$\huge\boxed{\underline{\mathcal{\red{❥A}\green{N}\pink{S}\orange{W}\blue{E}\purple{R}}}}$

Sea water is a mixture of salts and water which cannot be separated except by evaporation. Therefore, sea water is considered homogeneous.

Sea water also contains mud, decayed plant, etc., other than salts and water, so it is heterogeneous also.