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...e same as the molecular formula but not always. For example the molecule [[acetylene]] has molecular formula C₂H₂, but the simplest intege

...as the case of a steel crowbar which can be cut in two by a mere gas, (the acetylene cutting torch,) But higher still, a mere "light"-the industrial laser-can s

...Nov. 7/2 Fusion-welded pressure vessels. 1918 Nature 11 Apr. 105/2 The oxy-acetylene flame is most generally used for fusion welding, owing to its high temperat