Calculate the Atomic Mass of Tungsten Given the Atomic Mass

question 95

Multiple Choice

Calculate the atomic mass of tungsten given the atomic mass and percent abundance for the following isotopes:
W-180 179.9467 u 0.12%
W-182 181.9482 u 26.50%
W-183 182.9502 u 14.31%
W-184 183.9509 u 30.64%
W-186 185.9544 u 28.43%

• A) 183.75 u
• B) 183.84 u
• C) 182.98 u
• D) 184.41 u
• E) 183.92 u

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Definitions:

Medulla Oblongata

The lowest section of the brainstem, controlling autonomic functions such as breathing, heart rate, and digestion.

Gray Matter

Regions of the brain and spinal cord composed mainly of nerve cell bodies and responsible for processing information.

Myelinated Nerve Fibers

Nerve fibers surrounded by a protective fatty layer called myelin, which increases the speed of signal transmission.

All-or-none Principle

A principle stating that a neuron either fires at full amplitude or not at all, depending on whether the stimulus reaches the threshold level.