Boron exist as 2 stable isotopes in nature. Isotopic mass (in amu) and the percent abundance data are given below X amu 19.9% 11.009305 amu 80.1%

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Boron exist as 2 stable isotopes in nature. Isotopic mass (in amu) and the percent abundance data are given below X amu 19.9% 11.009305 amu 80.1%
6. Boron exists as 2 stable isotopes in nature. Isotopic mass (in amu) and percent abundance data are
given below.
x amu 19.9%
11.009305 amu 80.1%
Determine the unkonwn isotopic mass (in amu).
A: 10.01
over o9ggobo angaels bris anooon enong vm
se crceA
7. An element exists as 3 stable isotopes in nature. The isotopic masses (in amu) and percent
abundances are given below.
15.994915 amu 99.757 %
16.999132 amu 0.03800%
17.99916 amu 0.2050 %
Tevsd
Determine what the element is by calculating the average atomic mass (in amu).
A: O; 15.999 amu
Transcribed Image Text:6. Boron exists as 2 stable isotopes in nature. Isotopic mass (in amu) and percent abundance data are given below. x amu 19.9% 11.009305 amu 80.1% Determine the unkonwn isotopic mass (in amu). A: 10.01 over o9ggobo angaels bris anooon enong vm se crceA 7. An element exists as 3 stable isotopes in nature. The isotopic masses (in amu) and percent abundances are given below. 15.994915 amu 99.757 % 16.999132 amu 0.03800% 17.99916 amu 0.2050 % Tevsd Determine what the element is by calculating the average atomic mass (in amu). A: O; 15.999 amu
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