qin

qin joined Socratic 7.542465753424658 years ago. qin hasn't written a biography yet.

140,498 students helped

Level 9 in Physics Level 6 in Chemistry Level 3 in Earth Science Level 3 in Algebra Level 2 in Precalculus Level 2 in Organic Chemistry I Level 2 in Geometry Level 1 in Trigonometry Level 1 in Astrophysics
64 Answers 12 Edits 1 Asked