Sentence Examples


  • PYRENE, C16H10, a hydrocarbon found together with chrysene in the last portion of the coal tar distillate, and also in "Stupp" fat.
  • The relation between the heat of combustion of a hydrocarbon and its heat of formation may be readily seen from the following example.
  • The hydrocarbon methane, CH 4, when completely burned to carbon dioxide and water, generates 213800 cal.
  • Since the heat of combustion of a hydrocarbon is equal to the heat of combustion of the carbon and hydrogen it contains minus its heat of formation, those hydrocarbons with positive heat of formation generate less heat on burning than the elements from which they were formed, whilst those with a negative heat of formation generate more.
  • The hydrocarbon C20H42, for example, might be resolved into C5H12+C15H30, or CEH14+C14H28, or C7H16 +C13H26, &c., the general equation of the decomposition being C„1-1 27 ,± 2 (paraffin) =G_rH2(, - P)+2 (paraffin)+C P H 2 n (olefine).

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