Sentence Examples


  • To obtain the metal chemically pure a specially prepared pure oxide or salt of zinc is distilled.
  • Chemically related to vanadium are the two elements tantalum and columbium or niobium.
  • Lord Rayleigh in 1894 found that the density of atmospheric nitrogen was about 2% higher than that of chemically prepared nitrogen, a discovery which led to the isolation of the rare gases of the atmosphere.
  • Chemically pure sodium nitrate can be obtained by repeated recrystallization of Chile saltpetre or by synthesis.
  • It is not at all certain that the masses on which coral reefs are built consist entirely of the remains of the skeletons of reef-forming organisms and it is probable that chemically precipitated carbonate of lime predominates.
 

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