As the temperature of a liquid increases, the solubility of a gas in the liquid

A. increases.

B. decreases.

C. stays the same.

D. either increases or decreases depending upon the liquid

B. decreases.

Explanation:

the temperature exerts a notable influence on the solubility of a gas in a liquid, when the temperature increases, the solubility of the gas decreases, since it tends to expand.

In the case of gases, the decrease in intermolecular forces "liberates" the gas molecules from the forces that keep them in solution and they will escape from the container, with which it will be observed that with increasing temperature.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

answer carbon and three oxygen atoms;