Iodine crystals react with chlorine gas to produce iodine trichloride (unbalanced) O I + Cl2 --> ICI
O ICl3 --> I+CI
O I + Cl --> 12C12
O 12 + Cl --> IC13
12 + Cl2 --> ICI
ICl3 --> 12 + Cl2
O 12 + Cl2 --> ICI
I + Cl --> 13C
O 13CI --> I+CI
O 1+ Cl --> ICI:

that's what i got you can count the number of atoms

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.