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Consider the two solutions depicted below and fill in the blanks. The solute is a nonvolatile molecular substance. The vapor pressure of “b” will be _____ than “a” because there will be _____ solvent particles in the vapor phase above solution in “b”.

Did you have any concerns about this short assessment?

  Please open the following PDF:  Module5NetIonicReactionQuiz_672a0cc3e67482.672a0cc5949c95.79698193.pdf Please answer #7.

Which of the below viruses are a main cause of childhood “croup”?

 A biological risk factor for St. Louis encephalitis virus is >60 years of age.

Which scientist observed that certain bacteria living in water will cluster in areas of higher oxygen concentrations and formulated the hypothesis that oxygen-seeking bacteria will congregate near regions of algae performing the most photosynthesis.

Identify and briefly discuss six specific environmental hazards from the 4 categories to which the residents can be exposed. (10 Marks)

Discuss the four major food hazard categories. (4 Marks)

 Describe the most vulnerable group in this area. (2 Marks)

Suggest two methods to treat drinking water to prevent diseases. (2 Marks)