When 8.92 mg of a compound containing only hydrogen and carbon underwent
complete combustion with 32.1mg of oxygen, 15.5mg of water was produced. the
other product produced is carbon dioxide. what mass (in mg) of carbon dioxide was
formed?

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.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

the awnser is group 12

answerleaving cheese out to get moldy;