If one atom or molecule is giving electrons, another must be taking (or sharing). That's why the common term is redox reactions. An oxidation reaction occurs when the chemical change of an atom or molecule is accompanied by a net loss of electrons. A reduction reaction is the opposite - a net gain of electrons. Since electrons, like atoms, are not created or destroyed in chemical reactions, an reduction reaction cannot occur without a source of electrons - which is the oxidation reaction. An oxidation reaction cannot occur without a reduction reaction because free electrons are highly reactive will attach themselves to the nearest atom/molecule, effecting reduction.
The cost of installing a central heating system depends on different factors, such as the size of the house, the complexity of the installation and the type of system installed. An average cost for either a heat pump or a gas furnace system in 2014 may be around $10,000 to $20,000, depending on the above factors. Continue Reading.
Fair Furnace Installation Cost Range: $2,000 â $5,000. What this furnace installation cost range implies is that if you used a reasonably priced furnace, like Goodman, and your job is relatively straightforward. So, if you choose a reputable contractor, then you can expect to pay in the $2,500 range for a new furnace. If, however, you choose an expensive brand, such as Lennox or Trane, or if you have a difficult job, or a pricy contractor, then your furnace installation cost might be closer to $5,000.