Given the Standard Enthalpies of Formation for the Following Substances

question 75

Multiple Choice

Given the standard enthalpies of formation for the following substances, determine the change in enthalpy for the combustion of 1.0 mol of butane. $\begin{array}{lc}\text { Substance } & \Delta \boldsymbol{H} \\& \circ \\& \mathrm{f} \\& \text { in } \mathbf{k J} / \mathbf{m o l} \\\mathrm{C}_{4} \mathrm{H}_{10}(g) & -124.7 \\\mathrm{CO}_{2}(g) & -393.5 \\\mathrm{H}_{2} \mathrm{O}(g) & -241.8\end{array}$

• A) +2,658 kJ/mol
• B) -5,317 kJ/mol
• C) -2,658 kJ/mol
• D) +5,317 kJ/mol
• E) -3,647 kJ/mol

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Definitions:

Sexual Structures

The physical and societal constructs that define and regulate sexual behavior and roles within a community or society.

Corpora Cavernosa

Paired erectile tissues in the penis that fill with blood during sexual arousal, causing an erection.

Crura

Refers to specific anatomical structures resembling legs or leg-like parts, such as the crura of the penis or diaphragm.

Pubic Bone

A part of the pelvis, located in the lower abdomen, near the genital area, playing a key role in the structure of the pelvic region.