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atomic mass unit â measured as 1 twelfth of a C-12 atom.
sulfur dioxide is extremely soluble in water, forming sulfurous acid. This acid oxidises to form...
a white crystalline organic compound used as a fertilizer, in medicine and in resins.
a group of elements that are poor conductors of heat and electricity.
the separation of a dye into the different colours that make up that dye, as a result of the...