The Mineral Orpiment, Having the Empirical Formula As₂S₃, Was Used

question 43

Multiple Choice

The mineral orpiment, having the empirical formula As₂S₃, was used in ancient times as a cosmetic. What mass of arsenic is present in 5.0 g of orpiment [Given: naturally occurring arsenic is all arsenic-75; assume that all naturally occurring sulfur is sulfur-32 (only approximately true) ]

• A) 0.61 g
• B) 3.0 g
• C) 1.5 g
• D) 2.0 g
• E) 3.5 g

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Definitions:

Object Permanence

The understanding that objects continue to exist even when they cannot be observed or heard, a concept developed in early childhood.

Conservation

In developmental psychology, it describes a child's ability to understand that properties of objects (like volume or mass) remain the same even when their form or appearance changes.

Understanding of the Mind

The comprehension or knowledge about how the mind works, including thoughts, feelings, and cognitive processes.

Cognitive Development

Refers to the process through which a child learns to perceive, think, and gain a comprehensive understanding of their environment.