When choline chloride and urea--both solids--are mixed together in a molar ratio of 1:2, a liquid mixture is formed that freezes at 12 C. As pure compounds, choline chloride ([HOCH 2 CH 2 N(CH 3) 3] + ...
For a couple of decades, researchers have been scouring ancient proteins stuck to culinary pots for hints at what people ate in ages past. Now a team of scientists has found that a solvent mixture may ...
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