What Mass of K₂CO₃ Is Needed to Prepare 200

question 35

Multiple Choice

What mass of K₂CO₃ is needed to prepare 200. mL of a solution having a potassium ion concentration of 0.150 M

• A) 4.15 g
• B) 10.4 g
• C) 13.8 g
• D) 2.07 g
• E) 1.49 g

---

Definitions:

Hypothesis

A supposition or proposed explanation made based on limited evidence as a starting point for further investigation.

Tentative Statement

A provisional, uncertain statement that is not yet firmly established.

Variables

Elements or factors that can change and have different values in research or mathematical equations.

Application and Control

Involves the use of knowledge and techniques to achieve desired outcomes and manage systems effectively.