Calculate the Atomic Mass of Gallium If Gallium Has 2

question 36

Multiple Choice

Calculate the atomic mass of gallium if gallium has 2 naturally occurring isotopes with the following masses and natural abundances: Ga-69 68.9256 amu 60.11%
Ga-71 70.9247 amu 39.89%

• A) 69.72 amu
• B) 69.93 amu
• C) 70.00 amu
• D) 69.80 amu
• E) 70.68 amu

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Definitions:

Bilaterally Symmetric

A form of symmetry where an organism can be divided into two equal halves on a single plane, showing mirror-image right and left sides.

Coelom

A fluid-filled body cavity in many animals, located between the intestinal canal and body wall, lined by tissue derived from mesoderm.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the nervous system and skin.

Coelom

A fluid-filled body cavity found in most multicellular animals, located between the intestinal canal and the body wall, and surrounded by mesoderm tissue.