Answer:
Long question good luck:)
Explanation:
C it is the energy required to break existing chemical bonds, it is the amount of energy that a reaction requires in order for the reactants to successfully collide and react
Answer:
F' = F/16
Explanation:
The gravitational force between masses is given by :

If the distance between the center of two objects is quadrupled, r' = 4r
New force will be :

So, the new force will change by a factor of 16.