Question

giving an example list two information which make a chemical equation mole useful​

Answer 1

To make chemical equations more informative we mention :-

>The state of the reactant and product it is either solid liquid or gas

g for gases

s for solids

l for liquids

aq for aquoas solution.

>If gas we use up arrow sign

and if precipitate we use down arrow sign.

example:-

H2(g)+O2(g) ------> 2H2O(l)