Potassium Forms K⁺ Ions and Sulfur Forms S^2- Ions

question 1

Multiple Choice

Potassium forms K⁺ ions and sulfur forms S^2- ions. The formula of potassium sulfide is

• A) KS.
• B) K₂S.
• C) KS₂.
• D) K₂S₂.

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Definitions:

Critical Path

The sequence of tasks that determines the minimum project duration; delaying any task on this path delays the whole project.

Project Duration

The total period from the start to the completion of a project.

Negative Total Float

The amount of time that needs to be saved on a project schedule to meet the deadline, indicating a project is behind schedule.

Concrete

A construction material composed of cement, water, aggregates (sand and gravel), and possibly admixtures, used for building a wide range of structures.