Vērtējums:
Publicēts: 29.05.2004.
Valoda: Angļu
Līmenis: Vidusskolas
Literatūras saraksts: Nav
Atsauces: Nav
  • Eseja 'The Chemistry of Natural Water', 1.
  • Eseja 'The Chemistry of Natural Water', 2.
  • Eseja 'The Chemistry of Natural Water', 3.
  • Eseja 'The Chemistry of Natural Water', 4.
  • Eseja 'The Chemistry of Natural Water', 5.
Darba fragmentsAizvērt

INTRODUCTION
The purpose of this experiment is to explore the hardness of the water on campus. Hard water has been a
problem for hundreds of years. One of the earliest references to the hardness or softness of water is in
Hippocrates discourse on water quality in Fifth century B.C. Hard water causes many problems in both in
the household and in the industrial world. One of the largest problems with hard water is that it tends to
leave a residue when it evaporates. Aside from being aesthetically unpleasing to look at, the build up of
hard water residue can result in the clogging of valves,…

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