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ACS Chemistry 131 FINAL EXAM Questions and Correct Answers/ Latest Update / Already Graded
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---9januari 20262025/2026A+
- Atomic Structures 
Ans: Know all the problems except #7,14,15 
When looking at the atomic structure what does the left-hand 
subscript represent 
Ans: Left hand subscript = atomic number 
When looking at the atomic structure what does the left-hand 
superscript represent 
Ans: The mass number 
Where on the atomic structure would we find the ionic change (if the 
isotope has one) 
Ans: On the right hand super-script 
The mass number = a combination of what two thing
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