Question

How would you set up the problem to calculate average atomic mass of Bromine if one isotope has a mass of 78.92 and an abundance of 50.69% and the other has a mass of 80.92 and an abundance of 49.31%

Answer 1

To calculate the average atomic mass of Bromine, multiply the mass of each isotope by its abundance and add the results. The average atomic mass of Bromine is 79.90 amu.

Step-by-step explanation:

To calculate the average atomic mass of Bromine, you need to multiply the mass of each isotope by its abundance and then add the results. In this case, the first isotope has a mass of 78.92 amu and an abundance of 50.69%, while the second isotope has a mass of 80.92 amu and an abundance of 49.31%.

Multiplying the mass of the first isotope by its abundance gives 78.92 amu x 0.5069 = 40.00 amu.

Multiplying the mass of the second isotope by its abundance gives 80.92 amu x 0.4931 = 39.90 amu. Finally, add these two values together to get the average atomic mass of Bromine, which is 40.00 amu + 39.90 amu = 79.90 amu.