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With 6 weeks left and the whole syllabus for the SAT II Math 2 Subject Test to be covered, I felt hopeless and stressed. Thanks to my tutor’s enthusiasm and positive energy, I got over the fear and managed to learn the whole syllabus in 6 weeks! The tutor explained things thoroughly and made the classes fun. He always made sure I understood everything. Thank you so much - I wouldn't have been able to do it without you!
Subject
:
Question
57X 59X2+
Nuclide
% abundance
Mass (amu)
84Sr
0.56
83.9134
86 Sr
9.86
85.9093
87 Sr
7.00
89.9089
88 Sr
82.58
87.9056
A. 77Se B. 81Br1-
Answer