Unit 5 Water for Life

Standard

  1. Water should be purified prior to consumption to prevent the spread of disease causing microorganism that is present in the water.There are several ways to do it while hiking. The first way to do it will be through the use of chlorine tablets. While it is very cost effective and effective in terms of water treatment, however, it tends to leave a bad aftertaste in the water. The second method that can be used is distillation. The water is heated up till boiling point whereby it will then evaporate and the water vapor will condense on the plastic sheet above it and can be collected as potable water. This method can be cheap and cost effective but it requires sufficient amount of heat to allow the water to evaporate. This methods are usually combined to treat water in municipal water supplies, and thus they are similar in terms of the idea used to treat the water
  2. Desalination is not used large scale to produce potable water as it requires high amount of energies to remove the salts from the water. This leads to high cost as compared to other water treatment such as chemical treatment. Further more it requires large facilities to carry it out and it is also extremely time consuming and complicated.
  3. The major source of the lead comes from the lead leaching out of the pipe. the research activities carried out in the chemistry building should not contribute to the elevated lead levels as chemical waste from the labs are not to be disposed into the sink as chemical waste should be separately handled with care and dignity deserving of a research institute.
  4. I will expect the water soluble vitamins to be polar molecules as water is a polar molecule and it takes like to dissolve like and thus for water soluble vitamins to dissolve in water, it has to be polar. However for fat soluble vitamins, I will expect it to be non polar. This is because fats in the body is non polar and based on the above theory, fat soluble vitamin should be non polar.