Bab reaksi reduksi - oksidasi ngerti bgt 
hanoyhebat
bilang
lieuuuuuuuuuuuuuuur
Ih ngerti bgt ak mah.haha ai ntar uts kmia dr bab mana y?
hanoyhebat
bilang
kaga tau jangan nanya gua zzzzzz
hanoyhebat
bilang
