12. The metal that is usually extracted from sea water is 13.The major constituent of biogas is
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Answer:
sodium
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Explanation:
BECO sodium is made with that salt
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(Sodium) is the most abundant metal in sea water. Sodium chloride is commercially produced from sea water by solar evaporation. Salt is a dietary necessity, but only a small fraction of the production is actually used as 'table salt' in foods.
Biogas is usually made up of around 50-(70% methane (CH4) )and 25-45% carbon dioxide (CO2), with other gases such as hydrogen (H2), hydrogen sulphide (H2S), water vapor (H2O), nitrogen (N2), oxygen (O2), ammonia (NH3) making up the rest.
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