Calculating Average Atomic Mass
Flashcard
•
Science
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is average atomic mass?
Back
The average atomic mass is the weighted average of the masses of an element's isotopes, taking into account their relative abundances.
2.
FLASHCARD QUESTION
Front
How do you calculate average atomic mass?
Back
To calculate average atomic mass, multiply the mass of each isotope by its relative abundance (as a decimal), then sum these values.
3.
FLASHCARD QUESTION
Front
What is the formula for calculating average atomic mass?
Back
Average Atomic Mass = (mass1 * abundance1) + (mass2 * abundance2) + ... + (massn * abundancen)
4.
FLASHCARD QUESTION
Front
What is an isotope?
Back
Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons, resulting in different atomic masses.
5.
FLASHCARD QUESTION
Front
If an isotope has a relative abundance of 50% and a mass of 10 amu, what is its contribution to the average atomic mass?
Back
The contribution is 10 amu * 0.50 = 5 amu.
6.
FLASHCARD QUESTION
Front
What is the significance of relative abundance in calculating average atomic mass?
Back
Relative abundance indicates how common each isotope is in nature, affecting the overall average atomic mass.
7.
FLASHCARD QUESTION
Front
What happens if you have isotopes with equal abundance?
Back
If isotopes have equal abundance, the average atomic mass will be the simple average of their masses.
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