A Certain Element Is Composed of Two Isotopes,having the Mass

question 30

Multiple Choice

A certain element is composed of two isotopes,having the mass and abundance shown in the table.What is the average atomic mass for this element? Mass
Abundance
Isotope 1
35.0 u
75.8%
Isotope 2
37.0 u
24.2%

• A) 36.0 u
• B) 35.5 u
• C) 37.0 u
• D) 921.9 u

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Definitions:

Perceptual Constancy

The brain's ability to recognize objects as unchanging even as illumination and retinal images change in shape, size, or color.

Movement Parallax

Movement parallax is a depth cue that arises because objects at different distances move across the visual field at different rates relative to the observer’s motion.

Good Continuation

A principle in Gestalt psychology suggesting that elements aligned in a particular direction are perceived as a more unified whole.

Gestalt Law

Principles of perception that suggest humans naturally perceive objects as organized patterns and wholes rather than as separate components.