An Element,X,has the Following Isotopic Composition: X-200,90%; X-199,8

question 19

Multiple Choice

An element,X,has the following isotopic composition: X-200,90%; X-199,8.0%; and X-202,2.0%.Its average atomic mass is closest to

• A)200 amu.
• B)203 amu.
• C)199 amu.
• D)202 amu.
• E)201 amu.

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Definitions:

Digestive System

Organ system that consists of digestive organs (stomach, intestines, etc.) and accessory organs (liver, etc.); ingests and digests food; absorbs nutrients and eliminates wastes.

Photosynthesis

A biochemical process in green plants and certain other organisms that converts light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen.

By-product

A secondary product generated as a result of a manufacturing process, chemical reaction, or biological pathway, which was not the primary product or goal.

Thermodynamics

The branch of physics that deals with the relationships between heat and other forms of energy, and how energy affects matter.