quickestlearner6036
25.09.2019 •
History
Many agree that native americans migrated from asia as early as years ago.
a. 2,000
b. 5,000
c. 30,000
d. 100,000
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Ответ:
Ответ:
10.8109 amu
Step-by-step explanation:
The average atomic mass of boron is determined as the average of the atomic masses of both isotopes weighed by their respective abundances.
Therefore, the average atomic mass is given by:
The average atomic mass of boron isotopes is 10.8109 amu.