A graduated cylinder must be tipped over to add small amounts, and it would be very difficult to control the amount that is dropped into the analyte. On the other hand, a buret has a stopcock that can be controlled much more easily, by simply turning or pressing on it (depending on the type of buret). This allows a more controlled release, which is essential because one slows down the rate of dropping the titrant when close to the end point of titration.
AlCl₃
Remember, you want to make their charges cancel. So, we need 3 chlorine atoms (because chlorine has a charge of -1) for every 1 aluminum atom (because aluminum has a charge of +3 ).
Sodium carbonate.
Hope this helps
Well it matters If it touch with liquid or soild, if touched with liquid it is not call wet, but with soild yes because something dry will get went when touched with water but something wet will stay wet when touched with water.