H2 - hydrogen.
H2. Hydrogen gas.
It is an expression and a term that are of equal value
2Rb(s) + 2H2O(l) --> 2RbOH(aq) + H2(g)
(b+h)(b+h)= b2+2hb+h2.
Diphosphorus hexoxide
Possible P2O6 MeansNot: Phosphate because "anhydrous phophate" is P2O5 (most close to the original Q.) and "Phoshate" is (in chemistry) PO43-
Ammonium chloride
Na+H2o+H2=2 Nhoh
H2 - hydrogen.
H2. Hydrogen gas.
NaCl + H2.
2Na + 2H2O -> H2 + 2NaOH
2Na + 2H2O -------> 2NaOH + H2
Ammonia
The net ionic equation is Zn + 2H+ --> Zn2+ + H2
There are 2 sulfur atoms in the chemical reaction H2S plus SO2 plus H2.