NaS plus H2O
2Na + 2H2O -> 2NaOH + H2 Is the correct equation
The balance equation is HI(aq) + H2O(l) ==> H3O^+(aq) + I^-(aq)
freezing
Na2O + H2O ---------> 2NaOH
Khco3+h2o
no, it is a boner
h2o
The chemical formula (not equation) of water is H2O.
This is not an equation at all. An example of a correct (and balanced) equation would be: 2H2 + O2 --> 2 H2O
This physical process is freezing.
Melting
NaS plus H2O
No, NaCl H2O is not a chemical equation. An equation must have an equal sign. And even if you put an equal sign into those terms, it is not true that NaCl = H2O, so that would be a false equation, not a complete and balanced equation. You are not even close to having that.
it is H2O
H2o
H2o