[2M] 2. Redoxs
(a) Diagram 6.1 shows the apparatus set-up to investigate the transfer of electrons
at a distance between iron(II) nitrate solution and acidified potassium
manganate(VII) solution.

Electrode R
Elektrod R
Electrode s
Elektrod s
Iron(II) nitrate solution
Larutan ferum(II) nitrat
Acidified potassium
manganate(VII) solution
Larutan kalium
manganar(VII) berasid
Dilute sulphuric acid
Asid sulfurik cair
Diagram2.1
(i) State the function of dilute sulphuric acid.
[1M)
(ii) Referring to the reaction that takes place at electrode R:

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic 

Idk the answer sorry