How do I solve "Aqueous iron(II) chloride reacts with aqueous lithium bromide to form aqueous iron(II) bromide and aqueous lithium bromide. " I have to put a formula as my answer.

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be