AEROSPACE ENGINEERING-5528-Handout

16- During the (until 1910), the idea about the cause of earthquakes varies between mythology and natural phenomena. a) O maturated period b) O historical period C)) early period d) O modern period O Boş bırak KÔnceki 16/20 Sonraki> Kapat

Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2C1O₂(aq) + 2OH(aq) → CIO₂ (aq) + CIO3(aq) + H₂O(1) Under a certain set of conditions, the initial rate of disappearance of chlorine dioxide was determined to be 2.30 x 10-1 M/s. What is the initial rate of appearance of chlorite ion under those same conditions? O 5.75 x 10-2 M/s O 1.15 x 10-¹ M/s O 2.30 x 10-1 M/s O 4.60 x 10-¹ M/s O 9.20 x 10-1 M/s

Determine whether the following statements are true or false, and explain your answer in one sentence. a) The rate law for an overall reaction 2A (g) -> B (g) is: Rate = k[A]^2 b) The rate law for an elementary step 2A (g) -> B (g) is: Rate = k[A]^2 c) The rate of an overal reaction is the rate of the slowest elementary step within its mechanism.

4PH3 P4 + 6H₂ What is the rate of disappearance of PH3 from 0 to 75 seconds? Time [PH₂] [P4] [H₂] 0 2.00 0 0 75 1.50 ? ? 150 1.25 0.19 1.13 225 1.13 0.22 1.31 300 1.07 0.23 1.40 RatepH3 [?] x 10 M/s Coefficient (green) Exponent (yellow) Enter

You conduct an experiment where everything but the number of cigarettes a person smokes is held constant You discover that a person smoking two packs of cigarettes a day quadruples (4x) the rate of aging over that of a one-pack-a-day smoker. Based on the data you have been given what is the value for n in the rate equation? Rate of aging = k [packs of cigarettes smoked]

Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2C1O₂(aq) + 2OH (aq)- ClO₂ (aq) + CIO, (aq) + H₂O(1) Under a certain set of conditions, the initial rate of disappearance of chlorine dioxide was determined to be 2.30 x 10 M/s. What is the initial rate of appearance of chlorite ion under those same conditions? 5.75 x 10-² M/s 4.60 x 10-¹ M/s A B 1.15 x 10-¹ M/s 2.30 x 10-¹ M/s E 9.20 x 10-¹ M/s

Answer the following if True or False. (11-20)   11. UHF radiowaves are ionizing form of radiation. *   True   False   12. Gray is the unit of the absorbed dose of radiation. *   True False   13. Spent fuel, uranium dioxide, from nuclear power plant can be disposed as ordinary solid waste. *   True   False   14. Sievert is a unit of the amount of energy that has been absorbed by the living tissue. *   True   False   15. The earth is constantly bombarded by background radiation like cosmic rays. *       True   False   16. Half-life of radioactive nuclides decreases by half every time they emit radiation. *   True False   17. Alpha particles are the most ionizing radiations. *       True   False   18. Irradiated…

What should be the best type of fire extinguisher in the following section of the laboratory and support your answer.   AAS-Graphite Assembly Room – Chemistry Laboratory HPLC Room -Chemistry Laboratory GCMS Room - Chemistry Laboratory Inoculation Room-Microbiological Laboratory Acid Digestion Room – Chemistry Laboratory DNA Amplification Room-PCR Laboratory Balance/Weighing Room-Chemistry Laboratory Hazardous Waste Storage Area – Chemistry Laboratory

Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2ClO2(aq) + 2OH–(aq) ClO2–(aq) + ClO3–(aq) + H2O(l). Under a certain set of conditions, the initial rate of disappearance of chlorine dioxide was determined to be 2.30 x 10–1 M/s. What is the initial rate of appearance of chlorite ion under those same conditions?

List two types of chemical compounds that must be present in the air for photochemical smog to form.What are the most common sources of these compounds?

For each scenario below, describe: (a) How could they have been prevented. (b) What should be the appropriate response to minimize harm. During a chemistry experiment, Jude carefully pours an unknown solution from a test tube into a beaker. His groupmate, John surprises him from behind. Jude accidentally drops the beaker and glass pieces caught his sandaled foot.

Just as the depletion of stratospheric ozone threatens life on Earth today, its accumulation was one of the crucial processes that allowed life to develop in prehistoric times: 3O2(g)→2O3(g) At a given instant, the reaction rate in terms of [O2] is 2.17×10−5 mol/L·s. What is it in terms of [O3]? Enter your answer in scientific notation.

doug began preparing laboratory surface disinfectant from chlorine bleach. he put on a chemical resistant apron and gloves and then removed the bleach container from the special chemical cabinet. he carefully placed the container on the laboratory benchtop and began to add the chlorine bleach to distilled water. nearby workers began complaining of burning eyes. doug was reprimanded by the supervisor. Explain why.

Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2C1O₂ (aq) + 2OH (aq) - ClO₂ (aq) + CIO, (aq)+ H₂O(l) Under a certain set of conditions, the initial rate of disappearance of chlorine dioxide was determined to be 2.30 x 10 M/s. What is the initial rate of appearance of chlorite ion under those same conditions? 5.75 x 10-² M/s 4.60 x 10-¹ M/s A B 1.15 x 10-¹ M/s 2.30 x 10-¹ M/s E 9.20 x 10-¹ M/s

Step-by-step explanation please

3. Which of the following is the BEST document where a laboratory technician can read the recommendation on how to handle chemical spills? ○ NFPA O PERMISSIBLE EXPOSURE LIMIT (FEL) O MATERIAL SAFETY DATA SHEET (MSD)

A 20-mm cube of copper metal is placed in 250 mL of 12 M nitric acid at 25°C and the reaction below occurs: Cu(s) + 4H+ (aq) + 2NO3(aq) -> Cu²+ (aq) + 2NO2(g) + 2H₂O(1) At a particular instant in time, nitrogen dioxide is being produced at the rate of 4.4 x 10-4 M/min. At this same instant, what is the rate at which hydrogen ions are being consumed in M/min? Do not write unit in answer. Report your answer with five places past the decimal point. Type your answer...

3- The concentration of hydrogen sulfide "H₂S" is 55 ppb at a location 150 m downwind from an abandoned oil well. What is the rate of H₂S emission from the well if the winds are 2.7 m/s on a sunny June afternoon, in grams per second? Assume ground-level emission and rural conditions.

Urgent!!

The rate law for the reaction A + B → C was found to be rate = k[A][B]. One experimental trial with the [A] = 0.26 M and (B] = 0.13 M had an initial rate of product formation of 0.36 M/s. What is the value of the rate constant for this reaction? Enter your answer as 0.0035 with no units. Use 2 significant digits. Answer:

Explain how an alcohol solution of CoCL2could be used to predict rain?

If you have both 1-hour and 8-hour data for ozone, report the higher AQI value. Suppose you had a 1-hour value of 0.163 ppm and an 8-hour value of 0.082 ppm. The reported AQI value should be Blank 1 and this falls under the category Blank 2 in the AQI scale.

Identify the oxidizing agent in the chemical reaction                    5Fe+2(aq) + MnO4-(aq) + 8H+(aq)                5Fe+3 + Mn+2(aq) + 4H2O(l)   The answer is ………………………………   Calculate the total number of atoms in 500 Ml OF 0.200 M KNO3 solution.     The answer is ………………………………                   Mg has three stable isotopes. Given a sample of Mg with the following masses and percent abundances: 24Mg:  23.9850 amu,   58.42% 25Mg:  24.9858 amu,   15.22% 26Mg:  25.9826 amu,   26.36% The average atomic mass (in amu) is ……………………   What mass of Na2SO4 is needed to prepare 350. mL of a solution having a sodium ion concentration of 0.125 M     The answer is ………………………

Given the particulate model which depicts the mechanism for the decomposition of NO2, answer the following questions. What is the chemical formula for the intermediate?  Write a balanced equation for the overall chemical reaction. Do not add states of matter.

A certain half-reaction has a standard reduction potential E =-1.25 V. An engineer proposes using this half-reaction at the cathode of a galvanic cell that must provide at least 0.80 V of electrical power. The cell will operate under standard conditions. Note for advanced students: assume the engineer requires this half-reaction to happen at the cathode of the cell. h Data Ag+ (aq) + e Ag (s) 0.7996 Is there a minimum standard reduction potential that the half-reaction used at the anode of this cell can have? yes, there is a minimum. Ered = v !! Al3+ (aq) + 3e-- Al (s) -1.676 Au+ (aq) + e Au (s) 1.692 If so, check the "yes" box and calculate the minimum. Round your answer to 2 decimal places. If there is no lower limit, check the "no" box. Au3+ (aq) + 3e - Au (s) 1.498 O no minimum Ba2+ (ag) + 2e - Ba (s) -2.912 Brz (1) + 2e- 2Br (aq) 1.066 Ca2+ (ag) + 2e - Ca (s) -2.868 Is there a maximum standard reduction potential that the half-reaction used at the anode of this cell can have? E=…

What is the role of carbon dioxide in air in Fresco Painting? What type of catalytic mechanism (heterogenous or homogenous) exist in Fresco painting? Why?

За. Bromine and methanoic acid react in aqueous solution. Br, (aq) + HCO0Н (ад) — 2Br (aq) + 2H" (аq) + Со, (g) The reaction was monitored by measuring the volume of carbon dioxide produced as time progressed. o 5 10 15 20 25 [Source: © International Baccalaureate Organization 2019] 30 20 40 60 80 100 120 140 160 Time / s [Source: © International Baccalaureate Organization 2019] Determine from the graph the rate of reaction at 20 s, in cm³ s1, showing your working. 3b. Outline, with a reason, another property that could be monitored to measure the rate of this reaction. 3c. Describe one systematic error associated with the use of the gas syringe, and how the error affects the calculated rate. 3d. Identify one error associated with the use of an accurate stopwatch. Volume of carbon dioxide / cm T m mm mo

what are the roles of following in crime scene investigation and how do they interact with each other? scene of crime officer(SOCO) forensic scientist police pathologist fire department gas/electricity adviser specialist dog units

DDT (molar mass = 354.49 g/mol) was a widely used insecticide that was banned from use in the United States in 1973. This ban was brought about due to the persistence of DDT in many different ecosystems, leading to high accumulations of the substance in many birds of prey. The insecticide was shown to cause a thinning of egg shells, pushing many birds towards extinction. If a 20-L drum of DDT was spilled into a pond, resulting in a DDT concentration of 8.9 x10^-5 M, how long would it take for the levels of DDT to reach a concentration of 1.41x10^-7  M (a level that is generally assumed safe in mammals)? Assume the decomposition of DDT is a first-order process with a half-life of 56.0 days.

1. CzH5OH(I) + HCOOH(I) → HCOOCzHs + H2O(I) 2. C₂H5OH(1)→ C₂H4(g) + H₂O(1) 3. C₂H4(9) + Cl₂(g) → C₂H4C12(1) 4. C6H6(1) + Br2(1)→ C6H5Br(1) + HBr(g) 5. 2C4H10(9) + 130₂(g) → 8CO₂(g) + 10H₂O(1) 6. 2C7H8(1) + 150₂(g) → 14CO(g) + 8H₂O(1) Match each equation above with its reaction type. Reaction Type Addition Complete combustion Elimination Esterification Incomplete combustion Substitution Reaction Number from Above → ◆ ◆ Fill in the blanks to complete the following statement. One method used to differentiate between saturated and unsaturated compounds is to add a few drops of orange-coloured aqueous bromine to samples of each organic compound. If the compound is ◆ the orange colour will quickly fade.

DDT (molar mass = 354.49 g/mol) was a widely used insecticide that was banned from use in the United States in 1973. This ban was brought about due to the persistence of DDT in many different ecosystems, leading to high accumulations of the substance in many birds of prey. The insecticide was shown to cause a thinning of egg shells, pushing many birds towards extinction. If a 20-L drum of DDT was spilled into a pond, resulting in a DDT concentration of 8.21 x 10-5 M, how long would it take for the levels of DDT to reach a concentration of 1.41 x 10-7 M(a level that is generally assumed safe in mammals)? Assume the decomposition of DDT is a first-order process with a half- life of 56.0 days. Time = days

Photochemical smog is also known as