kaperry
28.06.2019 •
Mathematics
Asurvey asked 40 students if they play an instrument and if they are in band. 1.25 students play an instrument. 2. 20 students are in band. 3.20 students are not in band. which table shows these data correctly entered in a two-way frequency table?
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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.