Search for tag: "atomic number"

chem102-010-20170414-122000.mp4 duration 50 minutes 0 seconds chem102-010-20170414-122000.mp4 chem102-010-20170414-122000.mp4	chem102-010-20170414-122000.mp4 UD Capture Recording atomic weight +82 More From Dana Chatellier 0 likes 75 plays 0
chem102-010-20170306-122000.mp4 duration 50 minutes 0 seconds chem102-010-20170306-122000.mp4 chem102-010-20170306-122000.mp4	chem102-010-20170306-122000.mp4 UD Capture Recording logarithms +103 More From Dana Chatellier 0 likes 64 plays 0

chem102-010-20170414-122000.mp4