If bromine atom is available in the form of, say, two isotopesStructure of Atom(49.7%) andStructure of Atom(50.3%), calculate the average atomic mass of bromine atom.
Question
If bromine atom is available in the form of, say, two isotopesStructure of Atom(49.7%) andStructure of Atom(50.3%), calculate the average atomic mass of bromine atom.
Solution
The average atomic mass of an element that has multiple isotopes is calculated by multiplying the mass of each isotope by its relative abundance (expressed as a decimal), and then adding those values together.
In the case of bromine, we have two isotopes. Let's assume the isotopes are bromine-79 and bromine-81, which are the two stable isotopes of bromine.
-
Convert the relative abundances into decimal form:
- For bromine-79: 49.7% = 0.497
- For bromine-81: 50.3% = 0.503
-
Multiply the mass of each isotope by its relative abundance:
- For bromine-79: 79 amu * 0.497 = 39.263 amu
- For bromine-81: 81 amu * 0.503 = 40.743 amu
-
Add these values together to find the average atomic mass:
- 39.263 amu + 40.743 amu = 80.006 amu
So, the average atomic mass of bromine, given these relative abundances, is approximately 80.006 amu.
Similar Questions
2. Calculate the average atomic mass of element, X. A sample of X is 22.50% X-37 and 77.50% X-35.36.00 amu35.45 amu37.05 amu35.02 amu
What does the average atomic mass represent?A.The weighted average of the masses of the isotopes of the elementB.The sum of the molar masses of each isotope of the elementC.The best guess of what the real atomic mass of the element would beD.The average of many measurements of the mass of the element
Calculate the mass percent of bromine in CBr4 given the following molar masses: C: 12.01 g/mole; Br: 79.90 g/mole.Group of answer choices11.10%36.22%75.94%92.52%96.38%
The isotopic masses (amu) and % abundances of the isotopes are given below. Isotope Abundance (%) Mass (amu)159X 30.60 159.37163X 15.79 162.79164X 53.61 163.92 The average atomic mass of the element is __________ amu.Question 1Select one:a.161.75b.162.03c.162.35d.163.15e.33.33
An element X has four naturally occurring isotopes, with natural abundances and masses outlined in the table below. Mass (a.m.u) Natural Abundance (%)47.00 40.20 %48.00 24.80 %50.00 20.00 %55.00 15.00 %Calculate the atomic mass of element X, to two decimal places.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.