The mole and Avogadro's number | Atoms, compounds, and ions | Chemistry | Khan Academy
User Rating:
/ 0
Poor
Best
Written by punjalak
Friday, 11 August 2017 14:37
ที่มา : https://www.youtube.com/channel/UC4a-Gbdw7vOaccHmFo40b9g
อัพโหลดโดย Khan Academy
