Gallium Isotope Abundance Quiz

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Questions and Answers

What is the calculated percentage of Gallium's isotope with an atomic mass of 68.9256?

50.0%
40.89%
30.0%
60.11% (correct)

If Gallium's atomic mass is 69.723, what is the atomic mass of the other isotope?

71.050
68.000
69.000
70.9247 (correct)

What is the method used to determine the percentage composition of Gallium's isotopes?

Interpolation
Weighted Average (correct)
Extrapolation
Simple Average

How much of Gallium's atomic mass is attributed to the isotope with an atomic mass of 70.9247?

<p>39.89% (B)</p> Signup and view all the answers

What equation would you use to express the relationship between Gallium's isotopes and its atomic mass?

<p>$69.723 = 68.9256X + 70.9247(1-X)$ (B)</p> Signup and view all the answers

Flashcards

Atomic mass of Gallium

The average mass of a gallium atom, calculated by considering the abundance of different isotopes.

Isotope abundance

The percentage of a specific isotope in a natural sample of an element.

Calculating isotope percentage

Determining the abundance of each isotope based on the element's total atomic mass

Weighted average

An average where values are multiplied by a weight before summing.

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Solving for X (isotope percentage)

Finding the percentage abundance of one isotope based on the total atomic mass and the mass of the other isotopes.

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Study Notes

Gallium Isotope Abundance

Gallium's atomic mass is 69.723.
Gallium has two naturally occurring isotopes.
The weighted average atomic mass of gallium is calculated using the abundance of its isotopes.
The equation representing the weighted average is 69.723 (100%) = 68.9256 (X %) + 70.9247 (Y %).
Solving for X, the abundance of the lighter isotope (69 Ga), yields 60.11 %.
The abundance of the heavier isotope (71 Ga) is 100% - 60.11% = 39.89 %.

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Description

Test your knowledge on the isotope abundance of gallium. This quiz covers concepts such as atomic mass, natural isotopes, and the calculation of weighted averages. Dive into the details of gallium's isotopes and their respective abundances!