Ogljikovodiki- preverjanje znanja
https://www.slo-foto.net/galerija_slika-88663.html
https://app.emaze.com/@AWWFLOZQ#4
https://educalingo.com/en/dic-pl/heksan
https://si.openprof.com/wb/poglavje:acikli%C4%8Dni_ogljikovodiki/2518/
https://jutro.si/kemija/datoteke/naloge/as301/c2h4_c3h6_in_c4h8.html
https://pl.wikipedia.org/wiki/1,3-Butadien
https://www.fishersci.co.uk/shop/products/n-heptane-certified-ar-analysis-2/p-8015149
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