When considering geoengineering, what is the main difference between solar radiation management and carbon dioxide removal?   a. solar radiation management is an extremely costly process, while CO2 removal is cost effective   b. CO2 removal will be a continuous process while solar radiation management will require a large but singular effort   c. CO2 removal is widely regarded as a reliable and realistic method, while solar radiation management is not   d. solar radiation management only addresses temperatures while CO2 removal stabilizes all aspects of climate

8. The national ambient air quality standard for sulfur dioxide is 80 ug m-³. Assuming an amount of air breathed daily is 11.3 m³, what is the estimated lifetime exposure of an adult female of an average body weight of 65 kg and a life span of 75 years if she is exposed daily throughout the whole year?

Q4- Determine the following properties for the gas given below at 5420 psig and 257°F. - value of z-factor - gas specific gravity - gas density - specific volume - isothermal gas compressibility - gas formation volume factor - gas viscosity - gas expansion - * -gross heating value Composition, mole percent Component Hydrogen sulfide Carbon dioxide Nitrogen Methane Ethane 20.90 44.69 1.22 21.80 3.68 2.05 0.58 1.09 Propane - i- Butane n-Butane i- Pentane n-Pentane Hexanes Heptanes plus 0.46 0.56 0.72 2.25 100.00 Properties of heptanes plus Specific gravity Molecular weight 0.844 115 Ib/lb mole

2. The National ambient air quality standard for sulfur dioxide is 180 µg/m3. Assuming a lifetime exposure (24 hr/day, 365 days/year) for an adult male of average body weight. What is the estimated lifetime CDI for this concentration? Assume the exposure duration equals the lifetime.

Contaminant X is detected in a drink- ing water supply (4000 m³/day), and 94.99 percent of contaminant X must be re- moved to comply with federal water quality standards. If contaminant X has a "dimen- sionless" Henry's law constant, H, value of 0.25, then what is the design air-to-water flow ratio for an air stripping packed tower, assum- ing 3.5 times the minimum?

This is not an assignment question and not a graded question

Please choose the correct answer: 1. In water cycle, ______ brings H2O from water in a lake to vapor at atmosphere. A. evaporation; B. evapotranspiration; C. precipitation;            D. infiltration 2. A drinking water well in NJ is seriously polluted due to saltwater intrusion. The major pollutant is _____. A. Oxygen demanding materials;     B.salts;           C. nutrients;                  D. toxic heavy metals 3. The real reason to cause saltwater intrusion is the different of _____ between freshwater and seawater. A. density;             B. temperature;   C. velocity;     D. all of the above 4. Which of the following represents a non-point pollution source? A. Leaking underground gas tanks;  B. CSO; C. urban runoff;            D. an outlet of untreated industrial wastewater into a river

Explain and relate (as far as you can and to the best of your knowledge) if the turbidity data you get is the initial value of the turbidity of the water, how should the water be treated in the coagulation, flocculation, and precipitation according to the diagram on the side? Primary Secondary Chlorine disinfection tank Bar screen Grit chamber Settling tank Aeration tank Settling tank To river, lake, or ocean Raw sewage Sludge Activated sludge (kills bacteria) from sewers Air pump Sludge digester Disposed of in landfill or ocean or applied to cropland, pasture, or rangeland Sludge drying bed Brooks/Cole, Cengage Learning

A smokestack emits pollutant Z into the air on a sunny day. The effective stack height is 270 m. The wind speed is 4 m/s, due east. Your house is located 4.0 km due east of the smokestack. The ground level concentration of pollutant A is 2.0 mg/m3at your house. Your friend lives 4.0 km east and 1.5 km south of the smokestack. a. What is the emission rate of the pollutant in kg/s? b. For the emission rate determined in part a, you now want to know the concentration of pollutant Z at ground level at your friend’s house. i. What parameters change in the dispersion modeling equation? For each parameter, include the parameter symbol, a definition of the parameter, and its new quantitative value and required units.ii. Is the concentration at your friend’s house lower, the same or higher than the concentration at your house and why? (you do not need to calculate the concentration) show all work

Discuss the theoretical basis and practical implications of hysteresis in the behavior of elastomers used in mechanical systems, highlighting its significance in damping characteristics and energy dissipation?