Answer:
A & B: 8
C: O
D: 26
E: 30
F: Fe
Explanation:
the first one is Oxygen, the other is Iron.
Answer:
Direction
Explanation:
A weather vane is a weather instrument that is used to measure the direction the wind is blowing in.
The energy required to break existing chemical bonds in reactants is called the activation energy.
<h3>What is activation energy?</h3>
Activation energy in chemistry is the energy required to initiate a chemical reaction.
Chemical reactions involve the breaking of chemical bonds in substances called reactants to form new substances called products.
The energy required to break the bond in the existing reactants thus elevating these substances to a state of high activation is known as activation energy.
Therefore, it can be said that energy required to break existing chemical bonds in reactants is called the activation energy.
Learn more about activation energy at: brainly.com/question/11334504
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