The Following Chemical Equation Is Not Balanced

question 86

Multiple Choice

The following chemical equation is not balanced.What must be done to the equation to make it balanced? Al (s) + CuO (s) → Al₂O₃ (s) + Cu (s)

• A) Change the coefficients to: 2 for Al, 3 for CuO, and 3 for Cu.
• B) Change the subscript of CuO to CuO₃.
• C) Add a molecule of AlO.
• D) Change the state of matter in the reactants.
• E) Change the subscripts of Al₂O₃ to be AlO.

---

Definitions:

Classical Conditioning

A training mechanism in which two stimuli are frequently paired together; over time, the response that was originally caused by the second stimulus is elicited by the first stimulus.

Unconditioned Response

A reflexive, instinctual reaction to an unconditioned stimulus, not learned through previous experience.

Conditioned Response

A learned reaction to a conditioned stimulus that occurs because of previous conditioning, an essential concept in classical conditioning theories.

Unconditioned Stimulus

A stimulus that naturally and automatically triggers a response without any prior learning.