PROBLEM SOLVING - tempat bertanya PR Kaskuser (SD, SMP, SMA) - Part 2
caranya dong gan :malus kation Alumunium kan http://latex.codecogs.com/gif.latex?Al^{3+} anion oksigen http://latex.codecogs.com/gif.latex?O^{2-} jadinya http://latex.codecogs.com/gif.latex?Al_2O_3