Jawabanmu

2014-03-08T08:59:56+07:00
N₁ = 0,75
v₁ = ...?
n₂ = 3 mol
v₂ = 12 liter


n₁ = n₂
v₁     v₂

0,75 =  3 
  x      12

3x = 9
x =
      3

x = 3 liter