The following coordination complexes are provided:
1. na[fe(oh)4
2. mg[cr(h2o)sbr]
3. cr(nh3)3cl3
4. pt(en)cl2
5. calcium hexabromoplatinate(iv)
6. hexacarbonylmanganese(i) perchlorate
7.ammonium tetrachlororuthenate(lli)
8. tris(ethylenediamine)copper(ii) sulfate

a) propose and draw plausible complex structures.
b) indicate which structures can exhibit configurational or stereo-isomerism and draw corresponding stereoisomers.
c) determine the electron count for each complex.
d) determine the formal charge of the metal and the number of d electrons

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Amixture with the same composition throughout is!

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]