Tentukan mol dari 40 gram SO3

Materi : Stoikiometri
Kelas : X SMA MIPA

Mr SO3 = Ar S + 3 . Ar O
Mr SO3 = 32 + 3 . 16
Mr SO3 = 32 + 48
Mr SO3 = 80

mol = gram / Mr
mol = 40 / 80
mol = 4 / 8
mol = 1 / 2
mol = 0,5

Done !