Sulfur dioxide (SO2) in ambient air can be measured using wet chemical method. The detection limit...
Sulfur dioxide (SO2) in ambient air can be measured using wet chemical method. The detection limit of this method is supposed to be 5 μg in 50 ml of absorbing solution. If the sampling flow rate is 1 liter/minute, calculate the minimum sampling time required if the concentration of SO2 in ambient air is 40 μg/m3?
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Sulfur dioxide (SO2) in ambient air can be measured using wet
chemical method. The detection limit...
QUESTION 12 Sulfur dioxide gas contributes to acid rain. The concentration of SO2(g) in air can...
QUESTION 12 Sulfur dioxide gas contributes to acid rain. The concentration of SO2(g) in air can be determined by dissolving the SO2(g) in water and then titrating the solution produced with a standard solution of potassium permanganate, KMNO4(aq). If a 150 mL sample of SO2(aq) required 31.5 mL of 0.0100 mol/L of KMnO4(aq) to react, what is the concentration of SO2(aq) in the sample? (5 marks) The unbalanced reaction is: SO2(g) + MnO4 (aq) → S042 (aq) + Mn2+(aq) TTT...
Scientists determine the quantity of atmospheric sulfur dioxide (SO2), a large contributor to acid rain, by...
Scientists determine the quantity of atmospheric sulfur dioxide (SO2), a large contributor to acid rain, by an indirect titration. First, a scientist collects a sample of air and reacts it with hydrogen peroxide (H,O,) to form a solution of sulfuric acid ( H, SO2). Then, the amount of H, SO, produced is determined by titration with a sodium hydroxide solution (NaOH) of known concentration. H,02(aq) + SO2(g) → H, 50,(aq) H, SO (aq) + 2NaOH(aq) + 2 H2O(l) + Na,...
This problem asks you to analyze environmental quality as a public good, but using a slightly...
This problem asks you to analyze environmental quality as a public good, but using a slightly different approach than was used in the class example. In class we measured environmental quality by the percent abated (20%, 60% etc), this time we will measure environmental quality in terms of the quantity of pollution abated. I ask you to go into some detail about your calculations, to illustrate your understanding intuitively and technically. The Valley of Grimes is inhabited by three people...
Please summarise the following content:(no word limit) EXPERIMENTAL PROCEDURES Animals All animals including pregnant ICR mice,...
Please summarise the following content:(no word
limit)
EXPERIMENTAL PROCEDURES Animals All animals including pregnant ICR mice, neonatal Wistar rats, and NOD-SCID mice (8 weeks old, male) were purchased from CLEA Japan (Tokyo). All exper- imental procedures and protocols were approved by the Animal Care and Use Committee of Keio University and conformed to the National Institutes of Health Guide for the Care and Use of Laboratory Animals. Cells Mouse ESCs were obtained from the Laboratory of Pluripotent Cell Studies, RIKEN...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
QUESTION 12 Sulfur dioxide gas contributes to acid rain. The concentration of SO2(g) in air can be determined by dissolving the SO2(g) in water and then titrating the solution produced with a standard solution of potassium permanganate, KMNO4(aq). If a 150 mL sample of SO2(aq) required 31.5 mL of 0.0100 mol/L of KMnO4(aq) to react, what is the concentration of SO2(aq) in the sample? (5 marks) The unbalanced reaction is: SO2(g) + MnO4 (aq) → S042 (aq) + Mn2+(aq) TTT...
Scientists determine the quantity of atmospheric sulfur dioxide (SO2), a large contributor to acid rain, by an indirect titration. First, a scientist collects a sample of air and reacts it with hydrogen peroxide (H,O,) to form a solution of sulfuric acid ( H, SO2). Then, the amount of H, SO, produced is determined by titration with a sodium hydroxide solution (NaOH) of known concentration. H,02(aq) + SO2(g) → H, 50,(aq) H, SO (aq) + 2NaOH(aq) + 2 H2O(l) + Na,...
Please summarise the following content:(no word
limit)
EXPERIMENTAL PROCEDURES Animals All animals including pregnant ICR mice, neonatal Wistar rats, and NOD-SCID mice (8 weeks old, male) were purchased from CLEA Japan (Tokyo). All exper- imental procedures and protocols were approved by the Animal Care and Use Committee of Keio University and conformed to the National Institutes of Health Guide for the Care and Use of Laboratory Animals. Cells Mouse ESCs were obtained from the Laboratory of Pluripotent Cell Studies, RIKEN...
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