Balance the following by filling in the blank ZnS + O2 = 2 ZnO + 2S 4Li + O2 = Li2O ___ FeCl3 + NaOH → Fe(OH)3 + NaCl

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

"the periodic table is arranged in order of atomic number."

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.

answer carbon and three oxygen atoms;