In the change represented by the equation co2(s) to co2(g) the co2(s) is

represent solid form of carbon-dioxide gas in the reaction.

Explanation:

In the given reaction solid phase of carbon-dioxide is changing directly into gaseous phase of carbon-dioxide. This process of changing of substance from solid to gaseous state directly by escaping the liquid state is known as Sublimation.

Here is representing the solid state of carbon-dioxide which is also known as Dry-ice.

12 is it do you think so