HELP ITS DUE TOMORROW

1.  2 H2O + O2

2. NaBr + CaF2 = NaF + CaBr2

3.Ag + O2 = Ag2O

Explanation:

 I hope this helps~~~

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

personal, she chose to do it.