chap2
28:42
chap2 p2
18:48
chap1 partie2
19:00
Teorías ácido-base (Arrhenius, Brönsted-Lowry, Lewis)
17:58
chapter 2 part1
18:41
PARALLELOGRAMME Partie3
25:54
chapter 2 part2
1:04:20
Ludovico Einaudi [relax, study, sleep, soft, calm, inspired piano medley]
52:35