You Are Given Pure Samples of Ethane, C₂H₆(g), and Toluene

question 17

Multiple Choice

You are given pure samples of ethane, C₂H₆(g) , and toluene, C₇H₈(l) . What prediction would you make concerning their standard molar entropies at 298 K?

• A) S°_ethane > S°_toluene
• B) S°_ethane < S°_toluene
• C) S°_ethane  (S°_toluene) ÷ 3
• D) S°_ethane  S°_toluene
• E) Since toluene is much more complex than ethane, but ethane is in the gas phase while toluene is a liquid, none of the above predictions can be confidently made without further information or calculations.

Calculate and interpret the mean and standard deviation of derived distributions in practical contexts.

Understand and apply the concept of covariance and correlation in the context of bivariate distributions.

Know the characteristics of independent random variables and their impact on sums, variances, and covariances.

Recognize the importance of covariance and correlation measures in determining the strength and direction of linear relationships between two variables.

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Costs that do not change with the level of output produced, such as rent, salaries, and loan payments.