A serving of Cheez-Its releases 130 kcal (1 kcal = 4.18 k]) when digested by your body. If this same amount of energy were transferred to 2.5 kg of water at 27°C, what
would the final temperature be?

chemists can use the electron cloud model to assign electrons to different atomic orbitals. atomic orbitals also explain the patterns in the periodic table

explanation:

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.

no but i do not usually comment or use my voice that much when it comes to social media