Unit 1 DB

Archie was pouring a solution from a test tube into a beaker when his friend Guy surprised him from nowhere. Archie dropped the beaker and glass pieces were caught in his sandaled foot.Identify mitigating measure/sWhat should be the appropriate response to minimize harm

Element: Mercury

What is the purpose of the implementation of GHS? Select the correct response: To eliminate the need to translate chemical labels from one language to another. To minimize the cost of putting up multiple chemical labels per economic or geographic bloc. To generate more revenue for chemical manufacturers and distributors. To establish a central authority that will dictate the full compliance of member states of the United Nations. To have a uniform chemical hazard communication system across a global platform.

Identifying hazardous substances For each hazardous substance sign in this table, describe the type of hazard substance and give an example of a material to which it might be applicable. Hazardous substance sign XX Harmful Irritant F+ Type of hazard substance Example of material

Does wearing face shields outweigh their negative impact on our environment?

Which of the following is an example of good lab safety practices?     Handling chemicals without wearing your PPE.     Taking off your goggles if you're not using chemicals, even if the person next you is working with chemicals.     Wearing shorts in lab.     Placing a cap on all chemical containers when not in use.     Wearing sandals or flip-flops to lab.

Read through each scenario. Under the scenario, write which lab safety rule is being broken and indicate the proper protocol for each. 1. Jane is participating in a lab in which she blows carbon dioxide into a beaker of chemicals. Some of the chemical bubbles up and gets in her eye. Her lab partners tell her to use the eye wash fountains to rinse her eye out; however, she does not know where the eyewash fountains are located. 2. Mike and Colleen had a lot of a chemical left from their investigation. They dumped the chemical in the sink and left the water running in the sink as they left class

A piece of news reported that Jenjarom, a town located in the Kuala Langat District, is now smothered in 17,000 tonnes (17mil kg) of plastic waste. There were 33 illegal factories in Kuala Langat, the district Jenjarom is located in. Some sprang up nearby dense palm oil plantations, whereas others were closer to town. The smell started a while ago but got worse around August this year. People in the town started to feel unwell and would keep coughing. These illegal recycling plants choose to dispose of plastic a cheaper way - either burying it or burning it causing fumes - so hazardous that some people even coughed up blood clots while some could not sleep at night because of the smelly air. Children were also affected, especially those who lived nearest to the factories in Jenjarom. There were reports some children developed really bad rashes around their stomach, neck, legs, and arms. Their skin would keep peeling, even when touched by people, and hurtful. The smell was far and wide…

Dangerous Paint Stripper Jessica has a summer job working for the city parks program. She has been using a cleaner called “Graffiti Gone” to remove graffiti from the bathrooms. She has to take a lot of breaks, because the chemical makes her throat burn. It also makes her feel dizzy sometimes, especially when the bathrooms don’t have very many windows. On the label, she sees that the cleaner has methylene chloride in it. She feels like she’s managing to get the work done, but she is worried about feeling dizzy. She wants to find out more about this chemical, what harm it can cause, and whether there are safer ways to do this work. Questions for following story. 1. What went right in this situation? 2. What went wrong in this situation? 3. What steps should be taken in this workplace to make sure employees are better protected and prepared the next time?

Olympic athletes are tested to see whether or not they are using illegal performance-enhancing drugs. Suppose that urine samples are taken and analyzed, and the rate of false positive results is 1%. Suppose also that it is too expensive to refine the method to reduce the rate of false positive results.We certainly do not want to accuse innocent people of using illegal drugs. What can you do to reduce the rate of false accusations even though the test always has a false positive rate of 1%?

A soil analysis was conducted at a heavily used landfill in the United States. Results of the analysis showed the presence of leachate in the soil. Which of the following is the most likely source of the leachate found in the soil? A Organic matter disposed of in the landfill contaminated the soil as it underwent the de- composition process. B Rubber and textiles containing volatile organic compounds were disposed of in the landfill. Toxic solid waste produced from the incineration of municipal waste was disposed of in the landfill and contaminated the soil. A polluted liquid disposed of in the landfill seeped below the surface of the ground.

Scientists study the impact of changing only one component of a cancer treatment in a laboratory. Which of the following describes the study? controlled experiment observational study conceptual model computational study

I understand there is a broad list of ethanol-induced adverse effects on individuals resulting from a broad range of complex interactions between physical, genetic, environmental, behavioral, and social factors. From a health/science perspective, there are many pathologies that result from the consumption of alcohol. My book gives examples of, liver alcohol disease may start with a fatty liver, then progress to alcoholic hepatitis, and then to alcoholic cirrhosis. In alcoholic cirrhosis, damage from repeated and excessive alcohol abuse results in scars in the liver. As a result, the body can’t produce enough proteins or filter toxins out of the blood as it should. But .....what is the best way you can explain why drinking ethanol damages the liver?  if you can please break it down in steps?

Name: IDENTIFYING CONTROLS & VARIABLES Krusty Krabs Breath Mints Mr. Krabs created a secret ingredient for a breath mint that he thinks will "cure" the bad breath people get from eating crabby patties at the Krusty Krab. He asked 100 customers with a history of bad breath to try his new breath mint. He had 50 customers (Group A) eat a breath mint after they finished eating a crabby patty. The other 50 (Group B) also received a breath mint after they finished the crabby patty; however, it was just a regular breath mint and did not have the secret ingredient. Both groups were told that they were getting breath mint that would cure their bad breath. Two hours after eating the crabby patties, 30 customers in Group A and 10 customers in Group B reported having better breath than they normally had after eating crabby patties. 1. Which people are in the control group? 2. What is the independent variable? nreath ma 3. What is the dependent variable? bed breath 4. What should Mr. Krabs'…

A discharge pipe releases small amounts of various alcohols from an industrial fermentation process into a lake. Local scientists would like to estimate the rate at which the alcohols are degrading in the lake. One of them, butanol (C4H9OH), is released to the lake at a rate of 20 kg/day. Butanol is measured in the lake water on several occasions at a concentration of 10-4 kg/m3; no butanol is detected in the inflowing stream. Average streamflow at the outlet of the lake is measured to be 3 x 104 m3/day. What is the magnitude of internal sinks of butanol? Assume there is not butanol exchange with the atmosphere.

What is a possible testable question (in correct format) That Mrs love might ask for this Sanrio?

Perform a ramp table/analysis for the following: Hexane, Acetone, Dichloromethane, Use of a UV lamp for TLC, and heating on a hot plate  Recognize Hazards R: Identify the most important physical hazards from equipment, conditions, and procedures. These include electrical and mechanical hazards and high or low temperature or pressure. Assess the Risks of the HazardsA: Assess the risks presented by the most important hazards (know the chemical, evaluate the information, assess concentrations and handling)What would be the probable results of that exposure, should it occur? Minimize the Risks of the HazardsM: Identify methods to minimize risks for exposure to chemicals used or producedThink about the PPE you need, and where to put the waste, where to return chemicals safely, clean surfaces, close hood Prepare for EmergenciesP: Plan for common emergencies like spills, cuts, burns, exposures, know emergency dismissal and where safety stuff is in the lab

Is this correct for the diaper dissection lab

What is the difference between single use, limited use and reusable chemical protective garments?

3) A 28 yr old woman is newly sober for the past 3 months after completing an intensive outpatient recovery program. She wants to hang out with her co-workers at happy hour in a local club. She is anxious but goes out with them and orders a soda. She feels good that she was able to go out and not have an alcoholic drink. The following week the same scenario plays out without her having an alcoholic beverage. Is she on the path to staying sober or on the road to relapse? Why?

References] VISUALIZATION Polyester Formation II HO-A-OH HO-C-B-C-0H ethylene glycol (A group) terephthalic acid (B group) The starting materials for this reaction are ethylene glycol and terephthalic acid. The letters A and B represent organic groups that are unreactive. What reactive organic functional group does ethylene glycol (containing the A functional group) contain? Enter its name. Check (1 of 7)

Different type of methods used in household contaminated wastewater purification

the addition of surfactant molecules (CMC: critical micelle concentration) select one or more

Which activities are likely to cause contamination of stock chemicals in the laboratory? pouring out chemicals from the stock container into another container returning unused stock chemicals to their original container at the end of an experiment swirling the container of stock chemicals to ensure that the contents are thoroughly mixed spilling some of the chemicals on the lab bench and then returning them to the original container inserting a dirty pipet into a container of stock chemicals

If uncertain as to how to dispose a chemical, dumping it to the sink followed by copious amount of water is a safe disposal procedure   true or false

If a cow is pastured in an area that has been treated with pesticides such as DDT, these compounds can be detected in milk. In which of the three main milk components would you expect the DDT to be found? (Hint: think about the structure and polarity of the components of the milk, the structure and polarity of what we used to dissolve the various components of milk, and the structure and polarity of the pesticide compound, DDT)

Drugs consumption rates by fraternity and sorority members were found to be what than those of non greek affiliated college students