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.
floor furnaces cost $ 1500 to $ 2000 installed the average electric furnace cost is $ 1750 to $ 3500 installed the typical gas furnace cost is $ 3000 to $ 6000 installed although higher efficiency models and or complex installations could push the cost up to $ 7500 to $ 10000 or moreoil furnace cost is roughly $ 2500 to $ 5000 installed but similar to gas furnace prices it s not unheard of to spend $ 10000the average propane furnace cost is $ 3000 to $ 6000 installed again though costs could reach or exceed $ 10000he average electric furnace cost is $ 1750 to $ 3500 installed the typical gas furnace cost is $ 3000 to $ 6000 installed although higher efficiency models and or complex installations could push the cost up to $ 7500 to $ 10000 or more