HClO₄ + KOH → KClO₄ + H₂O
HClO₄ - perchloric acid
KOH - potassium hydroxide
Answer:+3
Explanation: You have to find the oxidation number of N which is +3.
this would have a charge of 4 plus
<span>Oxidation or reaction with oxygen is a chemical property</span>
The relative humidity of the air is the ratio of the actual amount of moisture in the air to the fully saturated amount. There for the answer is 33.1% or 3.3g/kg
