Which of These Ions Found in Hard Water Will Reduce

question 53

Multiple Choice

Which of these ions found in hard water will reduce the effectiveness of soap?

• A)Ca²⁺
• B)C^{4 −}
• C)F ⁻
• D)Ag⁺
• E)Hg²⁺

---

Definitions:

Retrieval Failure

The inability to recall information that is stored in memory, suggesting that the memory is not lost but cannot be accessed.

Implicit Memory

A type of long-term memory that allows individuals to perform tasks without conscious awareness of these previous experiences.

Déjà Vu

The eerie and often unsettling feeling of having already experienced a current situation or event, despite it being seemingly new.

Misinformation Effect

The effect where an individual's memory of events becomes less precise due to information received after the event.