In this video, I rank several common reagents that are so dangerous, they could end you. For fire extinguishers, A is for 'Ash', B is for 'barrel', and C is for 'current' (i.e. electrical fires). KH and related substances should be put out with a D fire extinguisher (the mnemonic is 'dynamite' which is kinda dumb IMO). Class K fire extinguishers are for oil fires in the 'kitchen'. This video is a reupload.
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