A chemical change can also be called a chemical reaction
Answer:
-2
Explanation:
carbonate oxifation number is -2
Answer:

Explanation:
The activation energy represents the energy barrier that reagents must pass to transform into products (or products to transform into reagents in a reverse reaction)
For any reaction, the change in enthalpy is related to the activation energy by the equation

So, the activation energy for the reverse reaction is

Explanation:When the stove turns on the skillet will become very hot because of the conduction of heat transferring from the stove to the skillet.