When you drink sparkling water, a chemical reaction in your mouth turns carbon dioxide into carbonic acid. And acid erodes tooth enamel. "Enamel is our tooth's outermost, protective structure ...

Maumene, on the above subject. The fatty oils mingled with sulphuric acid disengage heat, this action may serve to distinguish them; it separates in a striking manner the drying oils from those ...

FOR the analysis of the nitrate content of sea water, and for certain tests on alkaloids, it is necessary to have sulphuric acid free from all but the most minute amounts of nitric acid.