It is common practice to dump strong acids and bases (nitric, sulfuric, NaOH ect.) down the drain into the water supply after dilution and mixing with sodium bicarbonate. Are sanitary plants able to filter out 100% of these chemicals before being put back into circulation or the enviornment? What are the possible health and enviornmental effects of this practice?

write a summary of the current cloud cover in north america. Include date and time of the image in your report.

Initial Post:

Herbert Hoover and Franklin D. Roosevelt had very different attitudes about government and approaches to deal with the Great Depression. Describe each president's approach to the economic crisis, with examples from the speeches of President Hoover versus President Roosevelt.

Analyze the two approaches and consider:

• What was the long term impact of each President's actions?
• How did these different approaches change what Americans felt the government should be doing for them?

Your initial post should:

• Be 300-400 words in length.
• Describe each President's approach and consider the impact.
• Give at least one example from each President's speech.
• Use formal academic language, including MLA format citations- both parenthetical citations in your post, and full citations at the end. Please refer to the class Writing Guidelines and/or the MLA citation resources for a refresher.

"Use the Toxics Release Inventory on the Internet to investi-gate the locations and amounts of toxic chemicals released in illinois."

In textbook Chapter 18 section 18.3 you will find a description of “Trophic Cascades”.  Explain what this means.

      Describe how the concept of trophic cascade is related to the Keystone species concept in Chapter 17.

A chemical industry produces 200 tons of sulfuric acid per day when running at 24 hours. The acid is cooled in a counter flow double pipe heat exchanger from 60 0C to 40 0C. The cooling medium employed is water, which enters the heat exchanger at 15 0C and leaves at 20 0C. The acid flows through the inner pipe, while water flows through the annulus. The inner and outer diameters of the inner pipe are 70 mm and 80 mm, respectively, while that of outer pipe are 120 mm and 130 mm, respectively. The thermal conductivity of the inner pipe is 46.5 W/m-K. Use Dittus-Boelter’s equation for the estimation of heat transfer coefficients. Calculate the (a) mass flow rate of water in kg/h. (b) length of the heat exchanger. The properties of water at mean bulk temperature are: ρ = 998.2 kg/m3, Cp = 4.18 kJ/kg-K, k = 0.598 W/m-K and υ = 1.006 × 10-6 m2/s. The properties of acid at mean bulk temperature are: ρ = 1800 kg/m3, Cp = 1.465 kJ/kg-K, k = 0.302 W/m-K and υ = 6.8 × 10-6 m2/s.

What are the side effects of phenylephrine as a drug for nasal congestion? the side effects should be explained and arranged as per frequency of occurrence (how common they are, ratio of patients using the drug will get them) and  or importance (how serious)

Why is a nuclear power plant less efficient in converting heat energy to electricity than a fossil-fueled power plant?  

What is the region with the highest amount of carbon in soils

Article 1

Chapters 1-3, Topics: Climate Change; Major Global Atmospheric Wind Patterns

Article Assignments: the student will be required to write a one-page article on physical geography (type one paragraph, 4-8 sentences) (see following website links for some online sources or use hard copy newspapers or magazines) covering the summary or the article in your own words. Temporal (time) scale of article should be within the last 10-years, unless you are writing on a larger geological temporal scale (ex: decades, hundreds, thousands, millions, or billions of years). You must include two images (one must be a map of article location and one image, chart, graph, or table), and geographic coordinates (latitude and longitude; AKA: Lat/Lon) of article topics’ physical location (please see following URLs to obtain your Lat/Lon:

A 0.020 mol sample of carbon monoxide (CO) is placed in a cylinder fitted with a movable frictionless piston. This gaseous sample - initially at volume V_i = 4.00 L - has a pressure of 0.400 atm - identical to the external pressure. This gaseous sample then undergoes a cyclic process. Throughout the cyclic process, the sample is thermostatted at a Kelvin temperature T. The details of this cyclic process:

First, a two-step expansion carried out as follows:   
The external pressure is decreased to 0.200 atm and is held constant at this value while the volume change takes place. The first step involves a volume change from V_i to V₁.

Second:
The external pressure is decreased to 0.100 atm and is held constant at this value while the volume change takes place. The second step involves a volume change from V₁ to V₂ .

Next, a one-step compression is carried out:
The external pressure is increased to a value of P_{ext 1C} and is held constant at this value while the volume change takes place. One-step compression involves a volume change from V₂ to a final volume V_f.  P_{ext 1C} and V_f are consistent with the overall process being a cyclic one.

(a) Determine V₁ (in L), V₂ (in L), Vf (in L), and P_{ext 1C} (in atm) for this system and work for each step in the cycle: w_1E , w_2E , and w_1C .  

(b) Sketch the two-step expansion on P-V graph

c) Sketch the one-step compression on P-V graph
  

Please type!!

Climate change is an important problem that impacts all of us, yet it is so complex that it is hard to summarize in a convenient sound bite that is easy for the public to digest. In recent years it has also become political, since the fix impacts our energy use, which is the basis of our economy, and much is at stake. In your opinion, are humans causing global warming and what is your strongest argument for your opinion?