Stabiliti formulele pentru oxizii care au ca element: Mg(II); Al(III); N(III); N(V); Cl(VII). Parcurgeti etapele ca in clasa. Veti scrie 5 formule. Aveti in paranteza valenta elementului respectiv. Iar oxigenul este mereu divalent. Va rog eu, sa-mi raspunde-ti dau coroana

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]