Siolandair gas
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Siolandair ocsaidean dàibheadh, siolandair gas alùmanum àrd-bhruthadh 20mpa, 0.35L 0.5L 1L 2L siolandair gas beag dàibheadh a-muigh.
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ethylene (H2C = CH2), am fear as sìmplidh de na todhar organach ris an canar alcenes, anns a bheil bannan dùbailte carbon-carbon.