How do indicate the conditions of the reaction in a chemical equation ?

Where do you indicate hate energy in exo thermic reactions in a chemical equation reactions ? Why ?

how do you write a chemical equation?

How will you indicate the evolution of a gas and the formation of a precipitate in a chemical equation ?

How is the evolution of gas indicated in a chemical equation ?

How will you indicate the following effects in the chemical equation: Formation of a precipate

How will you indicate the following effects in the chemical equation: Evolution of a gas.

What are the conditions which must be followed by a chemical equation ?

Write the chemical equation of photosynthesis as an example of how the conditions are written in a chemical equation.

How do you write a chemical equation?

Which indicates the arrow mark in a chemical reaction?