ACC-4594-Practice Problems

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.

A 23-year-old woman with a history of asthma was brought to the emergency department by ambulance. She was extremely short of breath. Her level of consciousness was diminished greatly, and she was only able to respond to questions with nods or one-word responses. She had a weak cough, with nearly inaudible breath sounds. After drawing blood gases, she was placed on supplemental oxygen. Vital signs: heart rate, 160 bpm; blood pressure, 120/84 mm Hg; temperature, 37°C; and respiratory rate, 36/min. Her initial blood gas and total hemoglobin results were as follows: pH = 7.330 pCO2 = 25 mm Hg pO2 = 58 mm Hg HCO3 = 13 mmol/L tHb = 12.4 g/L QUESTIONS: 4. What clinical findings are most indicative of this patient’s impending failure?

Read and interpret the following information using the following abstract from a scientific journal article. In 2-3 sentences, summarize what you understand from this research

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

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

please help and make things clear thank you so much (:

The life cycle of a plastic bottle After reading the text below, answer the following questions. Make sure to put it in your own words. This is the story of three plastic bottles, empty and discarded. Their journeys are about to diverge with outcomes that impact nothing less than the fate of the planet. But they weren't always this way. To understand where these bottles end up, we must first explore their origins. The heroes of our story were conceived in this oil refinery. The plastic in their bodies was formed by chemically bonding oil and gas molecules together to make monomers. In turn, these monomers were bonded into long polymer chains to make plastic in the form of millions of pellets. Those were melted at manufacturing plants and reformed in molds to create the resilient material that makes up the triplets' bodies. Machines filled the bottles with sweet bubbly liquid and they were then wrapped, shipped, bought, opened, consumed and unceremoniously discarded. And now here they…

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

My quiz timed out and I was unable to answer the first question in time. I was also unable to answer the second correctly. This concept confuses me quite a lot and I'm not sure how to solve it in a step-by step process

When forest fires happen, sudden heavy rainfall is considered both as a reprieve and a threat. Why?

this is my homework practice assignment that is very important and I really need help please give the answer for the 2 questions which I have highlighted with the green color I need a step by step explanation please please please help me.

DDT (molar mass = 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 354.49 g/mol) was a widely used insecticide that was banned from use in the United States in 1973. 8.66 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

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?

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

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

Please show your work (THIS IS NOT A GRADED ASSIGNMENT)

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?

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?

Mock Crime Scene Scenario: The police were called to an apartment to investigate complaints of a suspicious sound of a gunshot. The door was locked, so the police entered the apartment with force. A woman was found dead in the apartment, from a fatal gunshot wound to the head. Since she had a gun in her hand, the Medical Examiner is questioning if this was a homicide or if she committed suicide. A neighbor was questioned and told police that she saw the woman’s ex-husband enter the apartment earlier that day. She heard arguing that escalated into screaming right before she heard a gunshot, which prompted her to call the police. The crime scene was processed by police to locate as much evidence as possible. A suicide note was found on the counter. A pen found next to the suicide note was also collected. Multiple cigarette butts were found in an ashtray near the suicide note. A cigarette was found in the woman’s left hand. A gun was found in her right hand. Both were collected as…

type it