Question Solved1 Answer One pathway for the destruction of ozone in the upper atmosphere is O3(g) + NO(g) -> NO2(g) + O2(g) Slow NO2(g) + O(g) -> NO(g) + O2(g) Fast Overall reaction: O3(g) + O(g) -> 2O2(g) Identify the correct term to describe each of the following species. Catalyst: nitrogen monoxide Product: molecular (di)oxygen Intermediate: NO2(g) Reactant: O3(g) Reactant: O(g) 1 pts You are correct. Previous Tries Ea is 14.0 kJ/mol, for the uncatalyzed reaction: O3(g) + O(g) -> 2O2(g) Ea for the same reaction, when catalyzed as above, is 11.9 kJ/mol. At -44°C, what is the ratio of the rate constant for the catalyzed reaction to that for the uncatalyzed reaction? (Assume the frequency factor A is the same for each reaction.) 1 pts Tries 0/5 One of the concerns about the use of freons is that they will migrate to the upper atmosphere, where chlorine atoms can be generated by the reaction CCl2F2 -> CF2Cl + Cl (photolysis of Freon-12) Chlorine atoms can also act as a catalyst for the destruction of ozone. The activation energy for the reaction Cl + O3 -> ClO + O2 is 2.1 kJ/mol. Cl is regenerated by the fast reaction ClO + O -> O2 + Cl If the frequency factors are the same and both catalysts are in equal concentration, how many times faster, at -52°C, does the Cl catalysed reaction proceed compared to the reaction catalysed as described in the previous question.

Acetic Acid in Water \( \quad \) Name: Hand-In, Chem 210Lonline Partner: See the attached rubric for more detailed information about grading. 1. (2 points) Write a balanced chemical equation for the acid dissociation reaction of acetic acid with water. Then write a correct equilibrium constant expression, \( K_{\mathrm{a}} \), for this reaction and list the Acetic Acid in Water Name: Hand-In, Chem 210Lonline Partner: See the attached rubric for more detailed information about grading. 1. (2 points) Write a balanced chemical equation for the acid dissociation reaction of acetic acid with water. Then write a correct equilibrium constant expression, Ka​, for this reaction and list the known Ka​ value (cite the source from which you obtained the value). Type answer here. } The following questions refer to Part 1 of this experiment in which you diluted a stock acetic acid solution with water. 2. (3) For each of the four solutions you prepared and studied report the formal concentration, the measured pH, the actual calculated concentrations for all the substances (products and reactants) involved in the reaction, and the % ionization of the acetic acid. Present this data in a table. \{Insert table here } 3. (2 points) Why did the pH change in the way it did as you diluted the acetic acid solution? Describe the change and explain why it occurs. Type answer here. } 4. (3 points) How does the percent ionization change as you dilute the acetic acid solution? Show a sample calculation of \% ionization for one of your solutions. In your sample calculation, be sure that it is clear what all the values are that you are plugging in to your calculation. \{nsert sample calculation here. } \{nsert discussion here. }

Q.17: Heat in the amount of 7.5 kJ is added to a closed system while its internal energy decreases by 12 kJ. How much energy is transferred as work? For a process causing the same change of state but for which the work is zero, how much heat is transferred?

Blue Spruce Corp. has decided to expand its operations. The bookkeeper recently completed the following statement of financial position in order to obtain additional funds for expansion:obligation is considered a long-term liability. (List Current Assets in order of liquidity. List Property, Plant and Equipment in order of Buildings, and Equipment.)

(15 points): Consider (again) the complex function G: C+C defined by 8 +2 G(8) 32 +63 + 18 (a) By hand, draw a pole-zero map of G (i.e., in the complex plane, draw a "o" to indicate points where G evaluates to zero and an "x" to indicate points where the magnitude of G tends to infinity).

The problem is Customers arrive at a tool crib according to a Poisson process of rate $\lambda = 5$ per hour. There is a single tool crib employee, and the individual service times are exponentially distributed with a mean service time of 10 minutes. In the long run, what is the probability that two or more workers are at the tool crib being served or waiting to be served? It is given that $\lambda = 5$, and I believe that $\mu = 6$ customers per hour. Then, I think the answer is $$1-\frac{1}{6}-\frac{1}{6}\left(\frac{5}{6}\right)-\frac{1}{6}\left(\frac{5}{6}\right)^2 = \frac{125}{216}.$$ However, the answer in the back is $\frac{25}{36}$. I was wondering what I did wrong. Or is the answer in the back wrong? Thanks.

26. EMPLOYEE POPULATION BASE In a large metropolitan area, 81% of the employed population is enrolled in a health maintenance organization (HMO). If 700,650 employees are enrolled, find the total number of people in the employed population. 28. VOTER REGISTRATION Registered Republican voters make up 13.8% of the population of one county, If there are 345,000 registered Republican voters in the county, find the total population in the county 30. DRIVING TESTS In analyzing the success of driver's license applicants, the state finds that Sa 3% of those examined received a passing mark. If the records show that 8370 new driver's licenses were issued, what was the number of applicants? Round to the nearest whole number 32. FAMILY SIZE One survey among college students found that 28.4% grew up in a home with two or more siblings and 44.7% grew up in a home with one sibling. If 194 students grew up in a home with no siblings, find the size of the survey group 34. HIRING Apple, Inc. recently announced that it will be hiring 5000 employees. If this is about 4.3% of the current workforce, estimate the number of people who work for Apple. 36. SMOKING OR NONSMOKING A casino hotel in Barbados states that 70% of its rooms are for nonsmokers. If the resort allows smoking in 264 rooms, find the total number of rooms. 22. JOB CUTS One Carrier Corporation factory builds air conditioning systems for commercial buildings. Sales are traditionally low as summer draws to an end and the manager decides he must lay off 80 of the 760 employees working on the assembly lines. Find the percent of workers that will be laid off. 24. VOCABULARY There are 55,000-plus words in Webster's Dictionary, but most educated people can identify only 20,000 of these words. What percent of the words in the diction-ary can these people identify 26. TANNING SALON Only 250 of Thai Beach's 1100 customers tan regularly. Find the per cent that tan regularly 28. MOTORCYCLISTS Of the 2380 motorcycle riders that participated in a recent bike rally through the California mountains, 2041 were men. Find the percent who were men. 30. WIND ENERGY In the early 1980s, wind-generated electricity cost about 30 cents per kilo-watt hour. Today, the best wind systems can produce electricity for 2 cents per kilowatt hour Find today's cost as a percent of the cost in the 1980s. p104 4,6 4. GLOBAL WARMING Periodically, 50% or more of all species of animals have gone extinct in a relatively short period of time. Many scientists believe we are entering such a period now as Earth warms. In fact, one scientist predicts that as many as 5 million out of the estimated 8.7 million species on Earth will disappear by 2100. Find the percent that may go extinct 6. LIGHTS OUT There are still 88,000 households in the United States that do not have electricity. If this is 08% of the homes, find the total number of households.