Average Atomic Mass | Lab - Edubirdie

University:
Hunter College CUNY
Course:
CHEM 106 | General Chemistry Laboratory
Academic year:

2021
Views:

214

Pages:

4
Author:

blakestar2o1o

All are 12 24, 25, 26 No there are 3 different mass numbers which mean there are 3 different masses Magnesium 24 is the most common Mg 24=8 Mg 25=1 Mg 26=1 Mg 24=16 Mg 25= 2 Mg 26= 2 Yes the abundance on earth is the same as model 1 24 The chance that you would pick Mg 24 are larger than the other two because 78.99 > 10, 11.01 24.305 It doesnÕt match but it gets very close They are too many isotopes for an element so it shows the average to simplify it Yes because the more precise you are the better Average mass Add them all up and divide by 100 24.31 24.31 24.98 MaryÕs and JackÕs Alan did not account for the relative abundance of each isotope You can divide the entire thing by 100 or the relative abundance by 100 Mg 24 Average mass is closest to the mass number of the most common isotope The average mass is 10.811. The more abundant one would be boron 11 because it is closer to the average mass number.

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