An Element Has Three Stable Isotopes with Masses of 27

question 92

Multiple Choice

An element has three stable isotopes with masses of 27.977 amu,28.976 amu,and 29.973 amu.The heavier two isotopes have an abundance of 4.68% and 3.09%,respectively.What is the mass of the element?

• A) 27.684 amu
• B) 29.251 amu
• C) 28.085 amu
• D) 30.107 amu
• E) 28.991 amu

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Definitions:

Hindbrain

The posterior portion of the brain that includes structures such as the cerebellum, pons, and medulla oblongata, responsible for regulating basic life functions like breathing, heart rate, and balance.

Cerebellum

A part of the brain at the back of the skull in vertebrates, responsible for coordinating and regulating voluntary movements.

Coordination

The ability to use different parts of the body together smoothly and efficiently or to organize effectively among groups.

Cerebellum

A part of the brain located at the back of the skull that is responsible for coordinating and regulating muscular activity.