Match the items given in column A and B: Column A Column B (a) Catalytic converter (i) Particulate matter (b) Electrostatic precipitator (ii) Carbon monoxide and nitrogen oxides (c) Earmuffs (iii) High noise level (d) Landfills (iv) Solid wastes
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- Match the items given in column A and B:Column A Column B(a) Catalytic converter (i) Particulate matter(b) Electrostatic precipitator (ii) Carbon monoxide and nitrogen oxides(c) Earmuffs (iii) High noise level(d) Landfills (iv) Solid wastesWhich of the following statements about AAS and AES is FALSE a)Sample used in AAS are usually in the form of aqueous solution b)In flame AAS, the flame is used for atomization as well as excitation purpose c)The graphite furnace is an example of non-flame atomizer d)In flame AES, no light source is required. What is the advantages of Axial torch configuration over Radial configuration in Inductive Couple Plasma-Optical Emission Spectrometer (ICP-OES) a)Increased radiation intensity – a longer path length b)Excellent tolerance to dissolve solids c)Can analyze S, P, and Halogens d)Excellent torch lifetimes32) The below given characterization data belong the .. ? CacO.HO CaC,0,. H0 100C CaC0, + H0 1 a) X-ray Spectroscopy b) Infrared spectroscopy c) Atomic Force Microscopy d) Thermogravimetric Analysis Cac O 100'C CaCo. 840 C 226°C 346°C 980'C! 660 c Cao 420°C Temperature ("C) 33) Which one the below given responses are not among the Acute inflammation responses? a) Extensive collagen synthesis b) Phagocytosis c) Neovascularisation d) Framework Intact 34) Biomaterials surface coatings are applied to improve the implant integration to body. Sort the adherences of different coating techniques to surfaces from poor to good adherence and also according to thickness.
- Mobile phase can be : A) Solid or liquid B) Only solid C) Only gas D) Liquid or gasThe U.S. Environmental Protection Agency estimates that 2.4 kilograms of CO2 are released when 1 liter of gasoline is burned (20 pounds of CO2 are released when 1gallon is burned). Use this information to determine the number of metric tons of CO2 emitted annually by (a) the car described in Question 1 with a low fuel efficiency, (b) a fleet of 250 million vehicles with this same fuel efficiency, (c) the car described in Question 2 with a high fuel efficiency, and (d) a fleet of 250 million vehicles with this same high fuel efficiency. These calculations provide a rough estimate ofthe CO2 footprints for individual cars and for the entire U.S. fleet with low and high efficiency cars. (Note: 1 kilogram= 2.20 pounds; 1 metric ton = 1,000 kilo grams = 2,200 pounds = 1.1 tons; 1 ton [H11005] 2,000 pounds).Ismail analyzed the triester content in an esterified oil using the gas chromatographic technique. The measurements for triester contents are 33.27, 33.37, and 33.34%. Calculate: (i) the average triester content (ii) the standard deviation, s for triester content (iii) the relative standard deviation for the triester content
- In your first paragraph you should explain the theory of chromatography in general, and the behind thin layer chromatography in detail. a) Define the terms "stationary phase" and "mobile phase" and describe how the stationary phase and the mobile phase interact with the analyte during a chromatographic separation (for chromatography in general – the same concept applies to thin layer, column, and gas chromatography). b) For what two main reasons would a chemist perform a thin layer chromatography analysis? c) define and describe the process of thin layer chromatography. Include the following terms: marking, spotting, developing, visualizing, and measuring. Include in your description several different ways that the plates can be visualized.4) An alpha source emits radiation into tissue. The mean range is 0.00645 cm. Assume the tissue has the same properties as water. (a) What is the mean range in air? (b) What is the energy of the source? (c) Find the position of forward side of the straggling zone if the (HWHM) is 0.15 cm. (d) What is the extrapolated range?How much sample should be injected into the GC? 1) 0.5 microliter O 2) 15 microliter 3)5microliter O 4) 5 militers
- 1-solid, 2-liquid, 3-gas, 4-supercritical fluid, point O-triple point, C-critical point -78.5 °C (The phase of dry ice changes from solid to gas at -78.5 °C) 3. Describe what one would see at pressures and temperatures above 5 atm and 1000°C. Answer:* (10)5. The air quality standard of NO2 is 0.053 ppm. Check to see if the measured NO2 concentration of 85 ug/m' at 10°C and 0.90 atm exceeds the standard.A 10-L stirred tank is used to cultivate mouse myeloma cells. Dry air is sparged from the bottom at 1.0 L/min to supply oxygen to the system. The gas composition at the outler is 16% oxygen, 3.5% CO2, 6.5% water vapor, and balanced nitrogen. The ambient pressure and temperature are 1 atm and 37 °C, respectively. The dissolved oxygen in the reactor is controlled at 20% of saturation with ambient air. What is the respiratory quotinent (RQ) (i.e., mole CO2 produced/mol O2 consumed)? Assume that the mole fraction of CO2 in the ambient air is negligible. The universal gas constant R = 0.082 L*atm/mol*K