Like, I knew it was going to react - my plan was to let it sit there at room temp until most of the copper was gone, and only begin heating to attack the organics after I had taken off the copper.
But with this much copper it seemed to be entering thermal runaway, self-heating and increasing the rate of reaction to the point that I was worried about whether the filtration in the fume hood would be able to cope with the amount of NO2 it was throwing off.
Maybe I should get like a cold water bath or something to put the beaker in when I resume? I wasn't expecting it to get this spicy at this scale (~5 ml of acid iirc).