
Average Atomic Mass
Authored by Rory Sheats
Science
10th Grade
NGSS covered
Used 66+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Calculate the average atomic mass of silver.
106.38649amu
111.91896amu
107.8677amu
121
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Compute the average atomic mass for silicon:
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
An isotope has three forms. 30% have a mass of 4 amu, 20% have a mass of 5 amu and 50% have a mass of 3 amu. Average atomic mass will be closest to
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Magnesium exists as the three isotopes shown. What is the average atomic mass of magnesium?
20.74 amu
22.56 amu
18.39 amu
24.31
Tags
NGSS.HS-PS1-8
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
An element with 4.35% have a mass of 49.9461 amu, 83.79% have amass of 51.9405 amu, 9.50% have a mass of 52.9407 amu, and 2.36% have a mass of 53.9389amu.
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