Hypothesis: If the temperature increases, then the air pollution will get worse.

Describe the procedures needed to test this hypothesis and what equipment would be needed.

Coke can be converted into CO—a fuel gas—in the reaction

CO₂(g) + C(s) → 2CO(g)

A coke that contains 84.0% carbon by mass and the balance noncombustible ash is fed to a reactor with a stoichiometric amount of CO₂.

The coke is fed at 77.0°F, and the CO₂ enters at 400.0°F, heat is transferred to the reactor in the amount of 5559 Btu/lb_m coke fed.

The gaseous products and the solid reactor effluent (the ash and unburned carbon) leave the reactor at 1830°F.

The heat capacity of that solid is 0.240 Btu/(lb_m °F).

Calculate the percentage conversion of the carbon in the coke. _______%

In a routine atomic absorption spectrometry determination of metal ions in blood), an analyst needs to obtain the blood-level concentration of lithium in patients taking lithium carbonate, Li₂CO₃, as a treatment for mental disorders. What specific type of light source is required for the AAS analysis of the lithium content of the blood samples?

How does Radiative Warming create Foehn Winds?

Q. 3. Write a detailed report on any two major fire explosions happened in Oman

Concisely describe the specific energy interactions that take place when solar radiation (in 0.4-1.5 micrometer) travels through the atmosphere and reaches the Earth surface. (list as bulletin points in a logic sequence)

how to calculate diffusivity of napthalene solid ball.?

When the total pressure is 760 mm Hg, various liquid and vapor phases for water (1) - methyl alcohol (2) mixture
The compositions at temperatures are determined experimentally as follows. The total composition is z2 = 0.6 and
temperature 76
Find our 75 mol mix, oC, phase analysis and component analysis. Of this mixture
Find the temperature at which it begins to boil and completely evaporate.

1. Definition of pesticides and its related terms (Insecticide, herbicides, etc…)
2. About four Major Classes of Pesticides and Insecticides. In what ways they are similar, and what ways are the four classes of pesticides are different? Which group is the safest to humans and the environment and why?
3. Describe major provision of FIFRA?
4. About environmental sustainable pest control methods
5. What is a monoculture? Why do they cause problems with pest control? Where can one see it?

1. Calculate the heat which is associated with the change in temperature of the water (q_water):
2. The specific heat of aluminum is 0.897 J/gºC. Calculate the heat which is associated with the change in temperature of the aluminum (q_Al):
3. Answer the following:
4. 1. Write the equation that relates q_water, q_Al and q_calorimeterin an insulated system:
5. 2. Using your answers from Q2, Q3 and Q4a, calculate the heat associated with the calorimeter, q_calorimeter:
6. Calculate the calorimeter constant, C_calorimeter:

Chart for question 1-6

Mass of metal Al: 7.4760g

Volume of water: 100mL

Mass of water:

Initial temp of water: 25 celsius

Initial temp of metal: 200 celsius

Max temp of water and metal: 27.65 celsius

1. Using the calorimeter constant determined in Part I, determine the specific heat of lead (C_Pb). Be sure to use the right equation which takes into account the C_calorimeter, and show all work and equations used for full credit:

Chart for question 1

Mass of metal Pb: 33.3590g

Volume of water: 100mL

Mass of water:

Initial temp of water: 25 celsius

Initial temp of metal: 200 celsius

Max temp of water and metal: 26.73 celsius

1500 m^3/h of a gas mixture containing 20 mole% solute and rest inert enters the absorber at 250 K temperature and 106.6 kPa pressure to remove 80% of original solute. solute free water used for absorption contains 10 mole% solute when it leaves the tower at the bottom. calculate the solvent flow rate to tower.

A Cascade aerator is used in a groundwater treatment plant to reduce the concentration of methane (CH4) and in the same time to increase the oxygen concentration. The height of each step of the cascade is 0.40 m. The design temperature is 10 0C. The following data is given:

Item

CH4

O2

CW,0

1.50 mg/L

0.70 mg/L

Cg

2 ppb

210000 ppm

kd

0.043

0.039

k (efficiency per step)

27%

25%

Calculate the saturation concentration of CH4 and O2 in water under 1 atmospheric pressure.

What is the required number of cascade steps (n) needed to achieve 91.94% removal of CH4 from water? What is the concentration of CH4 in water in mg/L after aeration in this cascade?

What is the concentration of oxygen in water in mg/L after aeration in this cascade?

What is the length of the Cascade aerator if its capacity is 15 m3/h per 1 m length of the step? The total water flow to be treated is 990 m3/h.

What is the total surface area of the cascade if the width to height ratio of the steps is 1:1?