S is the chemical symbol of sulfur.
The meaning of (s) is solid.
B(s)
Br- is chemical symbol for a bromide anion. It is not an 'equation', it can be a part of a chemical equation, like in this precipitation reaction (example) Ag+(aq) + Br-(aq) --> AgBr(s) .
The new substance(s) formed during a chemical reaction will appear to the right of the "yield" arrow in an equation. This/these is/are the product(s) of the reaction.
4Fe(s) + 3O2(g) --> 2Fe2O3(s)
Writing a chemical reaction with symbols: Ex.: NaCl + AgNO3 = AgCl (s) + NaNO3 A mathematical (digital) system for the writing of chemical equations exist but it is rarely used.
The chemical equation is:2 Al + 3 S = Al2S3
The chemical equation is:Mg+ + 2 OH- = Mg(OH)2(s)
2 Ag + S = Ag2S
The chemical equation is:Cu(NO3)2 + BaS = CuS(s) + Ba(NO3)2
the chemical equation of aluminium and iodine is given a s follows :2Al +3 I -> Al 2 I 3.This is a balance eqaution .
A chemical equation is a shorthand description of a chemical reaction.