Why is reaching activation energy necessary?
a)reactants require a minimum amount of energy to start to break a chemical bond. b)products require a minimum amount of energy to start to break a chemical bond. c)reactants must have the maximum amount of energy to start to break a chemical bond.
d) products must have the maximum amount of energy to start to break a chemical bond.

Answer;

A) Reactants require a minimum amount of energy to start to break a chemical bond.

Explanation;

-Activation energy is the minimum amount of energy that reactants must absorb before a chemical reaction will start. It is also referred to as free energy of activation.

-Activation energy is required to activate atoms or molecules of the reactants to a state that they can undergo chemical transformation to form products.

n+h→nh3

we must remember that nitrogen and hydrogen are both diatomic molecules in their standard gas form. this adjusts the equation to

n2+h2→nh3

now we need to adjust coefficients in order to balance the atoms on each side of the equation. currently we have 2 atoms of nitrogen and 2 atoms of hydrogen on the reactant side and 1 atom of nitrogen and 3 atoms of hydrogen on the product side.

we can balance the hydrogens by placing a coefficient of 2 in front of ammonia and a coefficient of 3 in front of the hydrogen.

n2+3h2→2nh3

this gives us 6 hydrogen on each side and coincidentally the nitrogens now equal 2 on each side.

the correct answer is a