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A group of people visited the reading room in the community library and spent time sitting and reading.  There was an accidental spill of a toxicant called Omega, which is highly volatile and absolutely odorless, in the ventilation system for that library room.  Once the staff realized what had happened, the air concentration of Omega was determined to be 0.648 ug/L.  But they need to know what dose these individuals received to determine the risk of health issues arising in the library’s cliental, and they hire you as the imminent Toxicologist to answer this question.You are told that there were 12 visitors, each visitor weighed about 70 Kg on average and stayed about 90 minutes in the reading room.  You also know that people breath approximately 6 liters of air per minute. Calculate the Dose each library visitor received.  You must show your work to receive full credit.(Note:  Assume: 1) total absorption of agent Omega from each breath; and 2) agent Omega reached an equilibrium within the room’s air volume within a few seconds of release.)    

Consider the following balanced reaction. How many moles of O2  are need to produce {n} moles of SO2? Assume excess C3H7SH. 

Enter the appropriate value to answer the question or solve the problem. Write an inequality to describe the region consisting of all points between (but not on) the spheres of radius 5 and 9 centered at the origin.    Input your answer here use the to state your answer. All work will be shown on a paper and uploaded at the end. 

Which electron energy level transition would result in the emission of a photon with the longest wavelength?

   Output (Pies)Total Variable cost (dollars) Total Cost (dollars)   0 0 300   100 400 700   200 1000 1300   300 1800 2100   400 2800 3100   The above table gives some of the costs of the Delicious Pie Company. The marginal cost per pie of increasing the production of pies from 100 to 200 is ____?

Accessible description: The figure shows a linear demand and supply curve, where the price is on the y-axis (dollars per gallon) and quantity is on the x-axis (thousands of gallons). The demand curve slopes downward, and two points lie along the demand curve (1, 4), and (2, 2). The supply curve slopes upward, and three points lie along the supply curve (0, 0), (1, 1), and (2, 2). The supply curve intersects the demand curve at (2, 2). Also depicted is a supply curve that includes a tax on sellers. The supply curve slopes upward, and three points lie along the supply curve (0, 3), (1,4) and (2, 5). The supply curve with the tax intersects the demand curve at (1, 4).  f1q25g1 (2).jpg The above figure shows the market for anti-freeze. The government imposes a sales tax on sellers. How much tax revenue does the government raise from this tax?

MethodLabor (workers)Capital (units)A50500B20700C60400The table above shows three production methods to produce 100 automobiles per day. Which of the three methods is technologically efficient?

Accessible description:  The figure shows a production possibilities frontier with hats on the y-axis (millions per year) and bananas on the x-axis (millions of pounds per year). The curve is downward sloping and concave. Four points lie along the curve from left to right, (0, 6), (1, 5.75), (2, 5), (3, 4), and (4, 0).   q1.jpg In the production possibilities frontier depicted in the figure above, what is the opportunity cost of increasing the production of bananas from two million pounds to three million pounds?

Which of the following displays the best order (safest to least safe) of choosing toxicant guideline values for the safety of general public following a spill in a residential community?

You receive a diet to perform a chronic exposure study in giraffes.  The diet contains “Stretch-necken” at a level of 0.18%.  The average weight of each giraffe is 420 kg.  You know the giraffes will eat the diet at a rate of 2% of their body weight per day.  What is the average daily dose (mg/kg body weight) of Stretch-necken received by the giraffes? You must show your work to receive full credit.  (Note:  Ready to climb a tree?  Giraffes like to be fed at head height!!)