A State Variable Is One That Allows Other Variables to Be

question 72

Multiple Choice

A state variable is one that allows other variables to be determined using a relationship.Which of the following variables are state variables?

• A)P,V,and T
• B)Internal energy,U
• C)W and Q
• D)(A)and (B)
• E)(A),(B),and (C)

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Definitions:

Hypothetical Syllogism

A logical argument composed of three categorical propositions, two premises followed by a conclusion, where if the first proposition (if A, then B) and the second proposition (if B, then C) are true, then the conclusion (if A, then C) necessarily follows.

Modus Ponens

A form of deductive reasoning where, from premises in the form "If P, then Q" and "P", one concludes "Q".

Modus Tollens

A logical argument form that infers the denial of an antecedent from the denial of the consequent in a conditional statement.

Hypothetical Syllogism

A form of logical argument where two conditional statements lead to a conclusion if the first condition is true, then the conclusion follows.