In the Laboratory, Endothermic Reactions Are Usually Performed at Elevated

question 67

Multiple Choice

In the laboratory, endothermic reactions are usually performed at elevated temperatures, while exothermic reactions are usually performed at lower temperatures. Why?

• A)Endothermic reactions require the input of energy, which can include the input of thermal energy. Elevated temperatures help minimize unfavorable decrease in entropy due to the heat absorbed by the reaction.
• B)For exothermic reactions, the lower temperatures slow the reactive molecules down, which gives the chemist greater control. Also, the heat generated by the reaction is more efficiently dispersed under the colder conditions.
• C)Performing endothermic reactions at elevated temperature gives the molecules greater kinetic energy. Also, some exothermic reactions would explode if not run at cold temperatures.
• D)All of the above are true.

Differentiate between various forms of culture, including subcultures, counter-cultures, and material culture.

Comprehend the concept of cultural norms, their enforcement through sanctions, and the distinction between mores, folkways, and laws.

Understand the role of language in shaping thought and experience through the Sapir-Whorf hypothesis.

Understand the concept and criteria of a holder in due course.

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