CHEMISTRY 108
York College
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Exam (elaborations)
YORK COLLEGE/CUNY Chemistry 108 Exam 2 | 2022 UPDATE
YORK COLLEGE/CUNY Chemistry 108 Exam 2 
Part I: Multiple Choice (60 pts) 
1. What is the molecular mass of Br2? 
A) 79.90 amu 
B) 79.90 g 
C) 159.8 amu 
D) 159.8 g 
E) 2.65 x 10-22 amu 
2. Which one of the following does not represent 1.000 mol of the indicated substance? 
A) 6.022 × 1023 C atoms 
B) 26.00 g Fe 
C) 12.01 g C 
D) 65.39 g Zn 
E) 6.022 × 1023 Fe atoms 
3. Boron obtained from borax deposits in Death Valley consists of two isotopes. They are 
boron-10 and boron-11 with atomic masse...