...so, not to make sleep-deprivation a theme, but when cleaning up after a lab that involved my kids working with strong hydrochloric acid, I accidentally dumped a beaker of HCl into my demo beaker, which had *super* concentrated nitric acid in it.
...that combination, by the way, of nitric and hydrochloric acids, is a famous one to alchemists: it was the only thing known that could successfully dissolve gold. And I had just accidentally made some.
Anyway, enjoy my horrified commentary-to-no-one.
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