What would you expect from an exothermic reaction?
a. the energy levels will depend on the reaction.
b. the reactants and products will have the same energy.
c. the products will have more energy than the reactants.
d. the reactants will have more energy than the products

Option (d) is the correct answer.

Explanation:

A chemical reaction in which heat is liberated is known as an exothermic reaction.

For example,

As energy is released, hence total energy of products is less than the total energy of reactants in an exothermic reaction.

On the other hand, a chemical reaction in which heat is absorbed by reactant molecules is known as an endothermic reaction.

For example,

As energy is absorbed, hence total energy of reactants is less than the total energy of products in an endothermic reaction.

Thus, we can conclude that you expect from an exothermic reaction that the reactants will have more energy than the products.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.