Answer:
2) Denotative meaning of a word or Denotation.
3) Connotative meaning of a word or Connotation.
4) Ethics and Culture.
Explanation:
2) Which meaning of a word refers to exactly what it is?
The denotative meaning of a word represents the explicit or the exact meaning of that word. Also called the denotation of the word.
3) Which meaning of a word includes what the word may represent?
The Connotative meaningof a word means something suggested or implied by a word. Also called the Connotation of the word.
4) What is the term used for society's tried and true rules that guide life?
Ethics refer to the rules and standards that guide the conduct of individuals; especially members of a societal body.
Culture is the total way of life of a society.
Hence, ethics amd culture both serve as the society's tried and tested rules that guide life.
Hope this Helps!!!
The potential energy is defined as the energy is contained in the body due to the height over the surface of the earth and it is calculated from the equation

<em>where:</em>
- PE: the potential energy in Joules.
- m: the mass of the body in kg.
- g: the acceleration due to the gravity in m/

- h: the height of the body over the earth in meters.
<em>in our problem:</em>

The answer is <span>nitrogen triodide
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