-The Heating Curve Shown Was Generated by Measuring the Heat

question 39

Multiple Choice

-The heating curve shown was generated by measuring the heat flow and temperature of a solid as it was heated. The heat flow into the sample in the segment ________ will yield the value of the ΔH_vap of this substance.

• A)AB
• B)BC
• C)CD
• D)DE
• E)EF

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Definitions:

Vaporization

The process by which a liquid or solid substance turns into a gas, often as a result of heating.

Combustible

Capable of catching fire and burning; a characteristic of materials that can ignite under certain conditions, releasing energy and heat.

Exothermic Reactions

Chemical processes that emit energy in the form of light or heat.

Heat

A form of energy transferred between two objects due to a temperature difference, often leading to changes in the state or temperature of a substance.