10. Suppose the cost C of removing p% of the impurities from the waste water in a manufacturing process is given by a) Where does the graph of this function have a vertical asymptote? b) What does this tell us

52,508 results
  1. Science help.

    Where is most freshwater on Earth found? lakes and rivers oceans and seas underground ice caps and glaciers How does algal growth caused by agricultural waste kill marine organisms? by blocking sunlight and depleting oxygen by increasing oxygen levels in

  2. Math

    The cost of producing x units of a certain commodity is given by P(x)=1000+ int(MC(s))ds from 0 to x, where P is in dollars and M(x) is marginal cost in dollars per unit. A. Suppose the marginal cost at a production level of 500 units is $10 per unit, and

  3. Math

    2. The cost of producing x units of a certain commodity is given by Px  1000  0 x MCsds, where P is in dollars and Mx is marginal cost in dollars per unit. A. Suppose the marginal cost at a production level of 500 units is $10 per unit, and the cost

  4. Chemistry

    I'm going over some post-laboratory questions for Conductivity of Solutions. One of the questions is... From your measurements, what can you say about a) the presence of ionic impurities in tap water? b) the presence of molecular impurities in tap water? I

  5. Science

    A county commissioner wants to reduce the amount of waste sent to the local landfill. Wich of the following would result in the greatest reduction of waste? A. Composting food waste B. Recycling Glass, plastics, and metals C. Reusing rubber, leather, and

  6. chemistry

    A precipitate of copper(II) hydroxide is formed in a reaction. What change will help to dissolve the copper(II) hydroxide? Cu^2+(aq) + 2OH^-(aq) Cu(OH)"subtext"2(s) A. Adding NaOH B. Adding HCl C. Removing CuCl2 D. Removing H2O is the answer for this d?

  7. math

    Janine is considering buying a water filter and a reusable water bottle rather than buying bottled water. Will doing so save her money? First, determine what information you need to answer this question, then click here to display that info (along with

  8. math

    The monthly cost (in dollars) of water use is a linear function of the amount of water used (in hundreds of cubic feet, HCF). The cost for using 19 HCF of water is $38.10, and the cost for using 46 HCF is $82.65. What is the cost for using 21 HCF of water?

  9. Environmental Science

    Which of the following is one way that a person can conserve water? a.Take a bath instead of a shower b.Wash laundry in small, partial loads c.use a low flow shower head to take short showers d.water the lawn daily and at nidday. I picked a. right? Because

  10. Analytical Chemistry

    Match the following terms about analytical precipitations to their definitions: A.) Coprecipitation B.) Adsorption C.) Absorption D.) Gathering E.) Masking F.) Digestion G.) Peptization 1.) Inclusion or occlusion of impurities within a crystal. 2.) Binding

  11. Algebra

    83. Minimizing Marginal Cost The marginal cost of a product can be thought of as the cost of producing one additional unit of output. For example, if the marginal cost of producing the 50th product is $6.20, it cost $6.20 to increase production from 49 to

  12. Pre-Calculus

    10. Suppose the cost C of removing p% of the impurities from the waste water in a manufacturing process is given by a) Where does the graph of this function have a vertical asymptote? b) What does this tell us about removing the impurities from this

  13. science

    If waste products of an aquatic single celled organism were released by the organism into the pond, how would that affect the organism’s ability to obtain oxygen from the pond water? i guess what i am really asking is does the presence of other moleculs

  14. Biology 20

    describe how the digestive, circulatory, respiratory and excretory systems interact in supplying matter and energy to body cells and in removing waste?

  15. maddy

    the crucible is not fired, as the procedure suggests, but had retained some impurities from previous use(or it could be oily smudges from fingers). the mass of the "dirty" crucible is recorded. however the impurities are burned off in the experiment. how

  16. chem 121

    explain why washing an impure solid with a cold solvent is not good as recrystallization for removing all the soluble impurities? why is the final product from a recrystallization isolated by a suction rather than gravity filtration?

  17. Chemistry

    Study the reaction. H2SO4(l) + CaCO3(s) ⇌ CO2(g) + H2O(l) + CaSO4(aq) Which of the following would cause the equilibrium to shift, producing more carbon dioxide gas? Select all that apply. removing water from the system removing H2SO4 from the system

  18. Environmental Science

    How is fresh water used in industry? a.in manufacturing processes b.in the disposal of waste products c.to generate power d.all of the above i picked b. I'm no expert on environmental science, but wouldn't it be (d)? I thought that because: a. People use

  19. Chemistry

    if some volatile impurities in the crucible are not burned off in step 1 but are removed in step 4 is the reported percent mass of water in the hydrated salt too high or too low?

  20. Maths

    A container in the shape of a right circular cone with vertex angle a right angle is partially filled with water. a) Suppose water is added at the rate of 3 cu.cm./sec. How fast is the water level rising when the height h = 2cm.? b) Suppose instead no

  21. advanced math

    The marginal cost of a product can be thought of as the cost of producing one additional unit of output. For example, if the marginal cost of producing the 50th product is $6.20, it cost $6.20 to increase productionn from 49 to 50 units of output. Suppose

  22. science

    Please HELP I AM BEING TIMED Which type of hazardous waste gives off radiation? a. toxic waste b. corrosive waste c. flammable waste d. radioactive waste

  23. Science

    here's my question, Why do living things need food, water, and the ability to get rid of waste? A. Living things need food, water and the ability to get rid of waste to maintain a balance within their habitat *** B. Living things need food, water, and the

  24. chemistry

    when we are synthesis n-butyl bromide what impurities we can expect in the crude product?and how would these impurities react with concentrated sulfuric acid?and also how we can make t-butyl bromide?

  25. Economics

    There are three industrial firms in Happy Vally. Initial Cost of Reducing Firm Pollution Level Pollution by 1 unit A 70 units $20 B 80 units $25 C 50 units $10 The government wants to reduce pollution to 120 units, so it gives each firm 40 tradable

  26. function of x

    the function f(x) 100,000x/100-x models the cost in dollars for removing x percnet of the pollutants from a bayou in which a company dumped creosol. find the cost of removing 60 and then 80% of the pollutants from the bayou. Can the company every remove

  27. math

    Suppose that inflation is 3% per year. This means that the cost of an item increases by 3% each year. Suppose a jacket cost $150 in 2011. How long will it take for the jacket to cost $300 dollars?

  28. Enviromental Science

    • Post a 7- to 9-slide (not including title slide or reference slide) PowerPoint® presentation according to the following: List what you think are the best ways to treat each of the following types of solid waste, and explain the benefits of the

  29. Math

    Suppose Meagan needs to drive the truck 10 miles to her new home. a) What is the cost of using Truck A? b) What is the cost of using Truck B? c) Which company offers the better deal at this mileage? 2. Suppose Meagan needs to dive the truck 30 miles to her

  30. Environmental Science

    #33. In two or three well-developed paragraphs, explain how water is treated so that it can be used for safe drinking water. Include definitions of the terms potable and pathogens. my answer: There are many steps to how water is treated so that it can be

  31. 0rganic Chemistry

    How are INSOLUBLE impurities removed during recrystallization? How are SOLUBLE impurities removed? thank you.

  32. Math

    A rectangular container 45cm long and 25cm wide was full of water. After removing 22.5 liters of the water, the level of water became 4cm high. What was the height of the container?

  33. chemistry

    Wich of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. A blank is titrated to correct for any reactive impurities in the solvent. For this experiment, the impurities would be reducing agents that would

  34. chem

    Wich of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. The volume required to titrate the blank is subtracted from the volume used to titrate the analyte solution to give the "corrected volume". B. A

  35. Economics

    There are three industrial firms in Happy Vally. Initial Cost of Reducing Firm Pollution Level Pollution by 1 unit A 70 units $20 B 80 units $25 C 50 units $10 The government wants to reduce pollution to 120 units, so it gives each firm 40 tradable

  36. Accounting

    Costs can be classified into two categories, fixed and variable costs. These costs behave differently based on the level of sales volumes. Suppose we are running a restaurant and have identified certain costs along with the number of annual units sold of

  37. SCIENCE HELP PLS

    Which of the following is a source of graywater? Sewage water Shower water Water waste from an auto repair garage Water waste from a chemical company is it b

  38. Algebra

    Suppose a cost-benefit model is given by y=2771x/100-x, where y is the cost for removing x percent of a given pollutant. What percent of pollutant can be removed for $36,000? Round your answer to the nearest tenth of a percent?

  39. English

    What can we do to save water? 1. We can turn off the water when we are not using it. 2. We can turn off the water when we are brushing teeth. 3. We can use only a little water when we wash face. 4. We can use a little water when we wash hair. 5. We can

  40. Science

    How does lead get into water?(1 point) It occurs naturally in water. It is a byproduct of detergents interacting with organic matter. It leaches into water as old pipes corrode. It is released into waterways with industrial waste.

  41. system of equations

    Suppose you are organizing a social. Let a be the fixed cost and b be the cost per person.Suppose you know it costs $1300 for 30 people and $2200 for 80 people. (a) Set up a system of (two) equations in terms of a and b:

  42. Math

    Circular discs of radius 3.5cm are to be cut from a rectangular sheet of cardboard measuring 50cm by 30cm. once the disc are cut out, the remaining parts of the sheet are waste. A. how many disc can be cut from one sheet of cardboard? B. If % waste =

  43. Science

    Under the 1980 Low-Level Radioactive Waste Policy Act, each state must take responsibility for its non-defense related, low-level nuclear waste. If nuclear waste was NOT regulated and disposed of properly, which of these could be a possible effect? A) The

  44. Chemistry

    Predict the effect of each of the following by mass of water in the hydrate and the chemical of the hydrate? a) not heating the hydrate enough b) overheating the hydrate and producing some copper (ii) oxide C) the initial hydrate appears to weigh less than

  45. science

    HELP ASAP 1) which change is chemical? • water undergoing electrolysis •water freezing •water evaporating •water boiling 2)which number remains unchanged during photosynthesis • The number of glucose molecules • The number of carbon atoms •

  46. math

    A tank was 3/5 filled with water. After removing 120 litres of water from the tank it was 1/5 filled. a)Find the amount of water the tank can hold when completely filed. b)If one litre of water has a mass of 1 kg, find the mass of water in the tank when

  47. College Physics

    On average, an electric water heater operates for 3.4h each day. If the cost of electricity is $0.3 kWh, what is the cost of operating the heater during a 30-day month? The power of a typical electric water heater is 4500 W. Cost= Dollars What is the

  48. Math

    Suppose a cost-benefit model is given: y= 5x/105-x Where y is the cost in thousands of dollars of removing x percentage of a certain pollutant. Find the cost of removing each percent of pollutants: 0%, 45%

  49. Intermediate Algebra

    Environmental scientists often use cost-benefit models to estimate the cost of removing a pollutant from the environment as a function of the percentage of pollutant removed. Suppose a cost benefit function for the cost C (in millions of dollars) of

  50. Intermediate Algebra

    Environmental scientists often use cost-benefit models to estimate the cost of removing a pollutant from the environment as a function of the percentage of pollutant removed. Suppose a cost benefit function for the cost C (in millions of dollars) of

  51. Chem !!!!!!!!!!!!!!!!

    All I know is that the colored impurities are soluble in water as sodium salts. so what type of compound does this suggest these impurities are?

  52. Environmental Helpp!

    Why would a 1 L bottle of water cost $1.50 whereas 1 L of gasoline currently costs about 90 cents? Discuss our current consumption of bottled water with specific emphasis on its relatively cleanliness compared to tap water, where the water comes from, how

  53. Math, Algebra

    1. Cost Benefit Model Environmental scientists often use cost-benefit models to estimate the cost of removing a pollutant from the environment as a function of the percentage of pollutant removed. Suppose a cost benefit function for the cost C (in millions

  54. chemistry

    Industrial waste contains Zn(II) and cyanide. The waste is toxic to aquatic species like fish. 1- If the waste consists of water, Zn(II) and cyanide, what ligands might complex with Zn(II)? 2- Write chemical equilibria reactions the must be considered to

  55. Chemistry

    0.12 g of rock salt(NaCl and impurities) was dissolved in water and titrated with 0.1 M silver nitrate. 19.7 mL was required to titrate all the chloride ion. How many moles of sodium chloride were in the original sample and what percent of the sample are

  56. Math

    Need help understanding half-life/decay problem for upcoming test. A water filter is constructed to form a foam that removes 25% of the particulate impurities for each inch of foam. 1.What percentage of the particulate impurities will be removed by a

  57. Anatomy

    Describe the consequences of not removing waste products from the body such as CO2, urea, and salts.

  58. algebra

    a city's main well was recently found to be contaminated with trichloreathylene (a cancer-causing chemical) as a result of an abandoned chemical pump that leached chemicals into the water. a proposal submitted to the city council indicated that the cost,

  59. seminar MGT

    Are “lean strategies” inconsistent with the achievement of optimization? Why or why not? This site may help you formulate your answer. http://www.isr.umd.edu/~jwh2/projects/gahagan.html If you post your ideas, we'll be glad to critique them.

  60. Science

    We made t-pentyl Chloride in Lab today using HCl and t-pentyl alcohol. I know t-pentyl chloride is not soluble in water, but I'm still not sure the answer to some of my post lab questions. I've answered a few, but I have 3 that still confuse me. We

  61. PHYSÝCS

    Suppose a person metabolizes 2150 kcal/day. a) With a core body temperature of 37.1°C and an ambient temperature of 21.3°C, what is the maximum (Carnot) efficiency with which the person can perform work? b) If the person could work with that efficiency,

  62. physics

    Suppose a person metabolizes 2250 kcal/day. a) With a core body temperature of 36.9°C and an ambient temperature of 21.5°C, what is the maximum (Carnot) efficiency with which the person can perform work? b) If the person could work with that efficiency,

  63. P.E. help

    Cleaning up waste sites and improving waste management are ways to protect land and water True False Is the answer true

  64. Chemistry (URGENT)

    In order to analyze the waste water containing Co^2+ from a manufacturing process, 1.0L of water was evaporated to 10.0mL, then placed in a spectrophotometer tube. The absorbance was found to be 0.20. Using your calibration curve, calculate the number of

  65. Environmental Science

    Which type of solid waste is mostly paper, yard waste, food waste and plastics? municipal*** industrial biodegradable recyclable

  66. managerial economics

    U.S.Supreme Court Justice examines government's role in controlling & managing health risks. One major problem examined is cleanup of hazardous waste sites. He wish to see waste sites 100% clean. a. Explain, using theory of optimization & a graph, the

  67. Environmental Science

    #33. In two or three well-developed paragraphs, explain how water is treated so that it can be used for safe drinking water. Include definitions of the terms potable and pathogens. my answer: There are many steps to how water is treated so that it can be

  68. Chemistry

    If some volatile impurities in the crucible are removed from the hydrated MgSO4 along with the water, is the reported mass of water removed too high or too low. Explain.

  69. Chemistry

    A 25 mL sample of waste water was treated with acid and SCN- to form an intense red complex. This complex was diluted to 100.0 mL and put in a variable pathlength cuvet. For comparison, a 10.0 mL reference sample of 6.8 x 10-4 M Fe3+ was treated with acid

  70. Science

    Water that contains impurities conducts electricity because _______ carry the charge

  71. chemistry

    1) what potential impurities were removed during recrystallzation? 2) two solids with different identities are frequently mixed together & do not melt, why do you suppose that the solids actually melted?

  72. English

    Identify the participle phase Removing the hook she gently put the fish back into the water?answers are removing the hook, she gently put, put the fish back, into water, thanks

  73. chemistry

    QUESTION 4 Data Set 3: 47.65 mL of a standard 0.1000 mol L–1 HCl solution is used to titrate a 0.3827 g sample containing NaOH and other impurities. None of the impurities reacted with the HCl. What is the mass of NaOH in the sample? a. 0.1737 g b.

  74. science can someone please check

    Write a 200- to 300-word response explaining how that physiological process differs among the following organisms: o Bacteria o Grasshopper o Fish o Bear i chose gets rid of waste my answer is as follows Bacteria would get rid of waste by passing it

  75. Chemistry

    Which of the following is NOT TRUE? A. The blank for this experiment must have 100 % transmittance if placed in a spectrometer (Spec 20). B. The volume required to titrate the blank is subtracted from the volume used to titrate the analyte solution to give

  76. English

    What can you do for your school? 1. I can help my homeroom teacher clean the room. 2. I can go on an errend for my teacher. 3. I can pick up waste from the ground. 4. I can sweep the hallway with a broom and a dustpan. 5. I can clean the hallway to the

  77. chemistry

    How do these things shift the direction of a chemical reaction?: -adding/removing reactants -adding/removing products -adding/removing energy Thanks! It depends upon the equation and whether the reaction is exothermic or endothermic. Post the entire

  78. chemistry

    Which of the following statements is /are true? Answer a. None of he above. b. Impurities in a solvent raise the freezing point of that solvent c. All of the above d. Non-volatile impurities lower the boiling point of a solvent e. Ions lower the vapor

  79. Can someone please check my answers

    Three fresh water and ocean water resource challenges fresh water resource challenges Aquifer depletion Lowers the water table. Prolonged aquifer depletion drains an aquifer dry, eliminating it as a water resource and may cause sink holes. Overdrawing

  80. chemistry

    What is the smallest volume of water at 20c that could be used to dissolve and remove potassium nitrate impurities and leave pure sodium hydrogen carbonate?

  81. Science

    Which of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. A blank is composed of the solvent used to dissolve the analyte. For this experiment, the solvent is a combination of sulfuric acid, phosphoric

  82. Chemistry

    Wich of the following is NOT true about the blank for the experiment, 'Analysis of a Complex Iron Salt'? A. A blank is composed of the solvent used to dissolve the analyte. For this experiment, the solvent is a combination of sulfuric acid, phosphoric

  83. Chemistry

    1)what potential impurities were removed during solventless aldol recrystallzation? 2) two solids with different identities are frequently mixed together & do not melt, why do you suppose that the solids actually melted? (why do you assume that it has been

  84. sci

    Would you say that with the rise in global warming, and with the increased amount of industrial wastes in the atmosphere, water at this point has a good chance to remain bound with aerosol and other impurities?

  85. Science

    Who is creating the most waste?What is suggested that we do to curve the waste problems? What is already being done to help curve the waste problem?

  86. science

    Who is creating the most waste?What is suggested that we do to curve the waste problems? What is already being done to help curve the waste problem?

  87. Math

    Suppose that the cost of a truck rental is related to the number of hours the truck is rented by a linear equation. Also, suppose the cost of a 2-hour rental is $55 and the cost of a 3-hour rental is $65. Find the cost of a 6-hour rental.: *

  88. Math (pre-celc 12)

    I'm not sure how to solve this equation algebraically: 38=20sin((2pi(t))/36)+22 I know the answer should be about 5.3 since I graphed it. I can get as far as removing 22 from the right and then removing 20 from the right by dividing by 20. To get

  89. chemistry

    Radioactive waste is difficult to dispose of due to the long time periods needed before the radiation effectively disappears. The US protocol is to store the waste for 10 half-lives of the material after which the waste is no longer considered radioactive.

  90. science

    Which change is chemical? water boiling water undergoing electrolysis*** water freezing water evaporating Which number remains unchanged during photosynthesis? the number of carbon atoms*** the number of water molecules the number of glucose molecules the

  91. Economics

    Suppose the total cost in naira in manufacturing q unit of commodity is C =3q²+7q + 15 Derive a formular for marginal cost What is the marginal cost when 60 units have been produced What is the actual cost of producing 61 units

  92. Analytical chemistry

    A 24.393 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 80.601 g of water. A 12.404 g aliquot of this solution is then titrated with 0.1059 M HCl. It required 31.61 mL of the HCl solution to reach

  93. economics

    # You produce shoes. Currently you produce 4 pairs of shoes at a total cost of %40. a)what is your average total cost (ATC) b)Suppose you could produce one more( fifth)pair at a marginal cost of $20. If you do produce that fifth pair of shoe, what will

  94. geography

    what would be some simple sanitation uses in australia? and you were usin tools made by yourself. the location of australia is in the area of west and south Gippsland. also including Wilsons Promontory, Victoria I'm not sure what you mean by "sanitation

  95. religious studies/ education

    hey, i have a question in which i need to know for and against points for a statement. this it the statement: 'Pilgrimage is a waste of money', its hard for me to think of since i dont think it is a waste and i need points saying why some may think it is a

  96. Technology

    Which of the following statements is true about a plumbing system? a. The potable water system carries used water away from the building b. The potable water system carries water that is safe for drinking c. All potable water that enters a building feeds

  97. Science

    I asked about this earlier and got an answer that caused me to rethink my process. Is this a good way to measure iron corrosion: weigh a nail, put it in water and let it rust, remove the rust (in my experiment the rust has come off easily, with just a

  98. English

    Choose the best answer 1. What do you get if you mix common bacteria and vinegar. The word common means a. multiple b. ordinary - the answer c. lower-class d. poisonous 2. It is a serious question. The answer is you get bacteria that eat toxic waste and

  99. environmental

    What problems may arise from mixing household hazardous waste with other domestic waste?

  100. calc

    Suppose the cost C(q) (in dollars) of producing a quantity q of a product equals C(q) = 500 + 2q +1/5q2. The marginal cost MC(q) equals the instantaneous rate of change of the total cost. Find the marginal cost when a quantity of 10 items are being

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