Average daily dose

average daily dose: only need the water ingestion completed

What are the advantages and disadvantages of animal studies and epidemiological studies for establishing dose-response relationships?

What are the advantages and disadvantages of animal studies and epidemiological studies for establishing dose-response relationships?

In this continuous process, "phosphoric acid and ammonia are mixed, and a non-hazardous product, diammonium phosphate (DAP) results if the reaction of ammonia is complete.

Attached is a very simple process flow diagram. In this continuous process, "phosphoric acid and ammonia are mixed, and a non-hazardous product, diammonium phosphate (DAP) results if the reaction of ammonia is complete. If the proportion of phosphoric acid is reduced, the reaction is incomplete, and ammonia is evolved. Reduction in the quantity of ammonia available to the reactor results in a safe but undesirable product." At the bottom of the diagram, you will find a list of seven "What If" questions (ONLY address Questions 4 and 5). Each team will address one or two of the questions and develop a consensus on (1) what the potential hazard is; and (2) what remedies would be appropriate t... click for more

How were FREONS developed for use in refrigeration?

How were FREONS developed for use in refrigeration? What were the advantages of these chlorofluorocarbons over previously used cryogens? Outline why the use of FREONS has now been discontinued.

Radioactivity

The half-life of tritium is approximately 12 years. What will be the molar ratio of tritium to helium-3 in a sealed sample after 25 years?