Solid Aluminum and Gaseous Oxygen React in a Combination Reaction

question 105

Multiple Choice

Solid aluminum and gaseous oxygen react in a combination reaction to produce aluminum oxide:

In a particular experiment, the reaction of 2.5 g of Al with 2.5 g of O₂ produced 3.5 g of Al₂O₃. The
% yield of the reaction is .

• A) 47
• B) 66
• C) 74
• D) 26
• E) 37

---

Definitions:

Unconditioned Response

An automatic, natural reaction to a stimulus that occurs without previous conditioning or learning.

Conditioned Response

An acquired reaction to a stimulus that initially had no specific response but has been paired with an unconditioned stimulus through the process of conditioning.

Classical Conditioning

The process of learning that happens when an ambient stimulus is paired with a stimulus that occurs naturally, causing a learned behavior.

Operant Conditioning

A means of learning in which the magnitude of an action is shaped by reinforcements or consequences.