Engineering chemistry problem.

In industry, an ethylene oxide is produced with air. Under operating conditions, much of the ethylene is converted to ethylene oxide, another part is fully oxidized to CO2 and water, and the rest is unreacted. The gases leave the reactor and go to an absorption column where the water will absorb all the ethylene oxide. The exhaust gases from the absorption column have 9.6% CO2, 6.4% C2H4, 3% O2, and 81% N2. % of ethylene entering the reactor is converted to ethylene oxide and what% remains unreacted? What is the ethylene / air ratio?

  Explain the following terms related to the water infrastructure and describe how they apply to water infrastructure: Safe Drinking Water Act (SDWA) of 1974, the Bio‐Terrorism Act of 2002, the WaterISAC, Hetch Hetchy, scarce resource.

A mixture of benzene and toluene boils at 95°C under a pressure of 101.3kPa. Calculate
the composition of the boiling liquid assuming the mixture obeys Raoult’s law. At 95°C,
the vapour pressure of benzene is 155.56 kPa and that of toluene is 63.98 kPa.

Explain why the terrestrial planets are so different from the gas giants.

Notice that I did not ask you to describe what the differences are but to explain why the differences exist.

1-Which U.S. President gave Rachel Carson's scientific findings vindication and went on to enact a ban on DDT? 1-Ronald Reagan 2-John F. Kennedy 3-Jimmy Carter 4- George W. Bush

2-DDT saved millions of lives during World War II. true or false

3-Carson was never subjected to ridicule and condemnation from the pesticide industry. true or false

4-While writing her book, Silent Spring, Rachel Carson was suffering from cancer. true or false

5-Carson expressed many times that she was not opposed to chemical sprays for the purpose of controlling pests. Rather, it was their "indiscriminate use" at a time when their wider effects were not well understood that she rallied against. true or false

4.   A pharmaceutical firm produces different brands of a drug; I, II, III and IV. Each brand contains volume(s) of at least one of chemical X or Y or both. Product I requires a combination of two centimeters square of chemical X and a unit square of chemical Y given a resource constraint of 16. A unit square of chemical X and two centimeters square of chemical Y is needed to produce product II given a resource constraint of 11. Product III needs only chemical X and requires at least two centimeters square volume of chemical X while product IV requires a unit centimeter square of chemical X and three centimeters square of chemical Y with a constraint of 15. The company makes a profit of ¢3000 for using a unit of X and ¢5000 for a unit of Y.
(i)   Write four inequalities involving X and Y that reflect the conditions above
(ii)   Determine, graphically, the best possible combinations of X and Y for the company.
(iii)   Using the objective function, determine the best combination that maximizes the company’s profit.                           25 marks

5.   SBL Ltd decided on the 5th of February to start producing bottled water. By 14th March, SBL Ltd had put all the needed structures at a cost of ¢1000 and indicated a profit before operation to be - ¢1000. They reported that the cost of producing any of their product depends on the function 3Q + 0.004Q2. SBL Ltd further, indicated that additional product produced increases profit by a margin defined by 7 – 0.012Q. Determine;
(i)   The total cost function of SBL Ltd
(ii)   The profit function of SBL Ltd
(iii)   The total revenue function of SBL Ltd (Hint: Profit = TR – TC)
(iv)   The output level that maximizes the firm’s revenue.

detailed answers needed please

21. determine the activity coefficient given the molal concentration of ZnBr₂ is 0.01 mol/kg.

Would the Canadian Charter of Rights and Freedoms prohibit an employer from putting in place a selection system that favored women over men in the hiring process? Could such discrimination ever be justified under the Charter?

In the first paragraph, examine the roles of native tribes in the American Revolution and what they hoped to receive from their activity.

In the second paragraph, describe the American exceptionalism and nationalism grew out of the Revolution.

This is american history.

Compare ‘all data’ of Maradi and Zinder using a histogram. Do both regions have the same distribution? If they are different, how are they different? Explain your answer using modality and skewness.Answer using R. You can make your answers using # for commands in the R script.
GW_All_Maradi

GW_Zinder

How does the dwarf planet Ceres differ from the other dwarf planets?

Group of answer choices

Ceres is part of the asteroid belt while the other dwarf planets are part of the Kuiper Belt.

Ceres is made mostly of ices and dust while the other dwarf planets are solid rock.

Ceres orbits the Sun while the other dwarf planets orbit Neptune.

Ceres is at least 10 times as massive as the other dwarf planets.

The NASA mission, Clipper, will place a spacecraft in orbit around Jupiter in order to perform a detailed investigation of Europa. We are interested in Europa because there might be the probability that

Group of answer choices

the tidal pull Jupiter has on it theoretically will cause it to shatter.

some form of life exists within its ocean, below its icy surface.

the Galileo mission, while orbiting Jupiter, contaminated its surface, killing all micro-organisms.

the eruptions from the sulfur volcanoes have coated its icy surface with sulfur dioxide (an antioxidant on Earth).

As a comet travels through the inner solar system, the direction of the tail changes. This is because

Group of answer choices

the coma shrinks when the comet is nearest the Sun, where it is the hottest.

regardless of which direction the comet moves, the tails are attracted toward the Sun.

the comet loses its ion tail when it is nearest the Sun due to the Sun's magnetic field.

regardless of which direction the comet moves, the tails are directed away from the Sun.

Meteors in a meteor shower produce light by

Group of answer choices

the energy produced by a mini-nuclear fusion process.

dust reflecting light from the Sun as it enters the atmosphere.

intense frictional heat from traveling through Earth’s atmosphere.

dust reflecting light from the Earth as it enters the atmosphere.

Explain the reason why refineries are considered a major source of pollutant?

State your opinion on the related law and expressions for the following scenario.

i)Heat transfer from a hot burner on the stove to a pot or pan

ii)Heat transfer from a hot surface of rooftop to a windy air.

ii)Heat transfer of a greenhouse effects towards global warming.