12 Dahlias, 30 Tulips
12:30
12/2=6
30/6=5
12/6=2
=2:5
Atomic mass silicon = 28.085 u
1 mol Si ---------------- 28.085 g
? ------------------------ 245 g
245 x 1 / 28.085 => 8.72 mol
answer A
It’s acidic?
It tastes sour
It has at least one hydrogen molecule
