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- 1. Multiple ChoiceWhat do the peaks on the mass spectrum represent?anionsdifferent isotopesatoms with differing numbers of electronsnumbers of electrons
- 2. Multiple ChoiceWhat do the heights of the peaks represent in the mass spectrum?number of isotopesrelative abundance of each isotopeaverage atomic masscharge:mass ratio
- 3. Multiple Choice
How many isotopes are shown in this mass spectrum?184864 - 4. Multiple ChoiceUse your periodic table. There are two isotopes of rubidium: 85Rb and 87 Rb. Which is more abundant?equally abundantrubidium-85rubidium-85.47rubidium-87
- 5. Multiple ChoiceCarbon has three known isotopes. Which is the most abundant?carbon-12.011carbon-12carbon-13carbon-14
- 6. Multiple ChoiceWhat is the average atomic mass for this element?10 amu10.8 amu19.9 amu11 amu
- 7. Multiple Choice
How many stable isotopes are represented on the mass spectrum?
1
2
3
4
5
- 8. Multiple Choice
What is the average atomic mass based on the mass spectrum data?
24.32 amu
22.99 amu
30.84 amu
25.00 amu
- 9. Multiple Choice
To which element does this mass spectrum belong?
Na
Mg
Al
Ne
- 10. Multiple Choice
The mass spectrum of a natural abundance of chlorine atoms is shown in the figure. Detailed analysis shows that the two stable isotopes of chlorine have masses of 34.969 amu and 36.966 amu. What are the mass numbers of the two isotopes of chlorine?
34.969 amu and 36.966 amu
34 and 36
35 and 37
17 and 17
- 11. Multiple Choice
The mass spectrum of a natural abundance of chlorine atoms is shown in the figure. Detailed analysis shows that the two stable isotopes of chlorine have masses of 34.969 amu and 36.966 amu. What is the approximate percent abundance of the lighter isotope?
20
25
50
75
- 12. Multiple Choice
The mass spectrum of an unknown sample shows four peaks. Use the data below to calculate the relative atomic mass of the sample.
83.8 amu
52.1 amu
52.5 amu
52.3 amu
- 13. Multiple Choice
What element's mass spectrum is represented below?
Re
As
W
Mo
- 14. Multiple Choice
The mass spectrum below represents a mixture of elements. What elements are present? Click 2.
As
S
Ag
Mn
- 15. Multiple Choice
Investigate the mass spectra attached. Which peak is the most abundant?
90
91
94
92
96
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