Balancing equations containing hydrated compounds (1 Viewer)

[lourai*87]

Ok, so im a uni student but i guess this is something someone mihgt be able to help with. Normal equations are fine..but take one containing this for example:

FeC₂O₄.2H₂O

Ok, so there are :
Fe 1
C 2
O 6
H 4

If i were to put a 2 in front of the Fe, does this affect the whole compound, ie affect the associated H₂O molecules as well? And may i change the number in front of the H₂O (i suspect not).

Hope that all makes sense.. thanks =)