Use the Following to Answer the Question

question 5

Multiple Choice

Use the following to answer the question:
-The graph shows the temperature of a 1.0-g sample of material as heat is added to it.The material is initially a solid at 10ºC.The pressure remains constant,and there is no chemical change.The heat of fusion of the material is

• A)10 cal/g
• B)50 cal/g
• C)30 cal/g
• D)90 cal/g
• E)None of these is correct.

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Definitions:

Cyclooctane

A cyclic hydrocarbon with the formula C8H16, consisting of a ring of eight carbon atoms.

Line Structure

A simplified drawing that represents a molecule's structure with lines representing bonds between atoms and excludes showing hydrogen atoms bonded to carbon.

Benzene

A colorless, flammable, ring-shaped hydrocarbon with the formula C6H6, known for its role in organic chemistry as a building block for more complex molecules.

Cyclohexane

A colorless, flammable liquid with a distinctive detergent-like smell, commonly used as an organic solvent and a precursor to nylon.