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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.

Write a paraphrase of the following passages.1. Bats are in the limelight these days because they are rumored to be the source of COVID-19, the virus that caused the coronavirus pandemic. But that is just part of their story. Bats turn out to be miraculous creatures. Their ability to age without decrepitude or cancer, as well as fight off a multitude of infections, are giving us clues about how to do the same for ourselves.

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.

Some greenhouse gases, such as fluorocarbons (CFCs, HFCs, PFCs, etc.), are human-made. Others, such as water, methane, and carbon dioxide, are naturally produced. Which type of greenhouse gas (human-made or natural) is more difficult to control and eliminate? Which types are easier? In three to five sentences, provide evidence for your argument.

Please explain these problems. They are interconnected to each other. A clear explanation is greatly appreciated. Thanks!

Years in the future, you venture into a long-forgotten landfill site to find antique bottles. As you dig, you unearth a plastic toy you threw away when you were six years old. How is it that this toy is still largely intact?

Paragraph 5: Discuss Fractional Distillation of petroleum oil to give the chemical feedstock to make synthetic polymers for commercial use of products in our daily lives and discuss your personal thoughts on incresing US drilling in the Gulf of Mexico or in the Artic. Think about it, every time you go to the grocery store and get a plastic bag which immediately gets discarded. Include your thoughts on mandatory recycling in the US especially for schools, government buildings, etc.

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…

Q#1: Name major air, water and soil contaminants responsible for environmental pollution in Peshawar. Suggest remedial measures for cleaning up the polluted environment in Peshawar.

Why are ducks waterproof? It’s because they produce copious amounts of oils from their uropygial glands and spread it across their feathers. In this exercise, we’ll be investigating the molecular structure of one of these preen oils to determine how it keeps ducks dry. Q.5 - Preen oil is actually a complicated mixture of many different organic compounds, such as the structure seen previously.. Ornithologists have determined that birds often use preen oil compounds for scent recognition. Below, several different chemicals isolated from preen oil are shown, along with their vapor pressures at room temperature. p-cymene has the highest vapor pressure, meaning it is the most easily evaporated compound of the three listed. Explain why p-cymene has a higher vapor pressure at room temperature compared to the other compounds. Make sure to explain what holds the p-cymene in the sample. (Image attached)

What is Donnan's theory? What is its importance in biophysical chemistry?

please solve this problem completely and explain step by step and why is it done that way. just post the picture please.

Like anatomy and physiology, chemistry may be a somewhat scary subject for you. Think of it this way: Chemistry is simply the study of matter, its composition, structure, properties, and the changes matter may undergo. Your goal in training as a cosmetologist is not to become a scientist, but to develop a comfort level with the basics and an ability to discuss chemistry in relation to your profession. This will increase your credibility significantly with your clients, especially during the consultation process. In the space provided, write how chemistry affects your everyday life.

Calculate the cost per individual molecule of your pain reliever. Acetaminophen has the chemical formula C8H9NO2. Ibuprofen has the chemical formula C13H18O2. Paracetamol has the chemical formula C8H9NO2.

A large population of Japanese beetles infests a plot of cropland. In response to the infesta tion, farmers treat the land with organochlorine pesticides. As a result of the treatment, the population of Japanese beetles is eradicated within the cropland, along with the popula- tions of multiple other insect species. Which of the following statements explains the most likely reason for the death of so many insect populations? Organochlorine pesticides are persistent organic pollutants that interfere with the respi- ratory system of the insect populations. Organochlorine pesticides are endocrine disruptors that interfere with the growth hor- mones of the insect populations. Organochlorine pesticides are persistent organic pollutants and interfere with the re- productive organs of the insect populations. Organochlorine pesticides are endocrine disruptors that interfere with the transmission of nerve impulses, resulting in spasms, seizures, and death of the insect populations.

Greenwashing is a major problem. Companies will say they are using practices that benefit the environment while really not taking any steps to do so. An example is Terracycle - a company that is supposedly able to recycle non-recyclable plastics and by-products - but which went over a year without collecting products from any of their customers. How can consumers navigate the labels to determine if products are actually sustainable.

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.

D) E) ??? HO م سر مسح ??? OH 333 ??? ??? srom 101 to OH :0

FALBERTA It is estimated that the total amount of oxygen (O2) contained in BIFS is equivalent to 6.6% of the oxygen present in the modern atmosphere. This is quite impressive given that the atmosphere during Archaean and early Proterozoic times was largely devoid of oxygen! Therefore, this reflects the photosynthetic efficiency of the early biosphere, coupled with its operation over long periods of time. Knowing that the mass of the modern atmosphere is 5.01×1018 kg, of which 21% is oxygen, what is the mass (in kilograms) of oxygen contained within BIFS? 6.9 x 1016 kg of O2 contained in BIF deposits Knowing that the molecular mass of O2 is 32 g/mole (0.032 kg/mole), how many moles of O2 are contained within BIFS? 2.17 x 1018 moles of O2 contained in BIF deposits Now, let us think about iron (Fe). The total mass of BIF's globally is estimated at 5.0x1017 kg, wherein iron accounts for approximately 35% by mass. The atomic mass of iron is 55.8 g/mole (0.0558 kg/mole). What is the total…

Use the ethical theories discussed in this chapter to analyze the Bhopal case.Topics to be considered should include the placing of a hazardous plant in apopulated area, decisions to defer maintenance on essential safety systems,etc. Important theories to consider when doing your analysis are rights andduty ethics and utilitarianism

Determine whether the statements are true or false and could you please leave a short explanation in order for me to understand? Thank you so much! 1. Vitamins are useful in the body in great amounts.2. Vitamins don't have a common sturcture3. There is one type of vitamin B.4. Vitamin D is usually found in citrus fruits.5. There are vitamins that can be produced by the skin with the aid of sunlight.6. Vitamin K can solve fertility problems.7. Some vitamins can be synthesized by the human body.8. Before taking multivitamins, consultation with a doctor is important.9. All vitamins are water-soluble.10. Too much vitamins may be toxic to the body.

This CANNOT be hand-drawn. Please digitally draw/illustrate and type any explanations.

How is personal risk analysis done when working with hazardous chemicals?Explain step by step

Through the first quarter of the 19thcentury, the concept ofvitalism—that a key difference existed between substances iso-lated from animate sources and those from inanimate sources—was widely accepted. What was the central notion of vitalism?Give an example of a finding that led to its eventual downfall

You are a forensic scientist. You are investigating a murder involving poison. The victim was poisoned with a compound called di-chlorobenzene, whose formula is C6H4Cl2. Autopsy results show that the victim’s body contained about 27.5 g of the poison, but the actual amount could have been slightly higher due to tissue absorption. The main suspect is his wife, Suzanne, who works as a chemistry professor. Records show that she purchased 15 g of benzene (C6H6) two days before the murder. Benzene is one of the compounds use to make the poison. She claims she was using it to make methyl benzene (C6H5CH3), an innocuous compound, for use in her lab. She shows you the bottle of methyl benzene she claims to have made. It contains 25 g of methyl benzene. To produce di-chlorobenzene, the reaction is:       Cl2(g)  +  C6H6(l) ⟶⟶ C6H4Cl2(l) + H2(g) To produce methyl benzene, the reaction is:          CH4(g) + C6H6(l) ⟶⟶ C6H5CH3(l) + H2(g)   Use stoichiometry to solve this case. Be sure to show all…

You are a forensic scientist. You are investigating a murder involving poison. The victim was poisoned with a compound called di-chlorobenzene, whose formula is C6H4Cl2. Autopsy results show that the victim’s body contained about 27.5 g of the poison, but the actual amount could have been slightly higher due to tissue absorption. The main suspect is his wife, Suzanne, who works as a chemistry professor. Records show that she purchased 15 g of benzene (C6H6) two days before the murder. Benzene is one of the compounds used to make the poison. She claims she was using it to make methyl benzene (C6H5CH3), an innocuous compound, for use in her lab. She shows you the bottle of methyl benzene she claims to have made. It contains 25 g of methyl benzene. To produce di-chlorobenzene, the reaction is:       Cl2(g)  +  C6H6(l) ⟶⟶ C6H4Cl2(l) + H2(g) To produce methyl benzene, the reaction is:          CH4(g) + C6H6(l) ⟶⟶ C6H5CH3(l) + H2(g)   Use stoichiometry to solve this case. Be sure to show…

Please answer these five questions. I only have this question as a free question. And I need these five to be answered. Thank you in advance! It would mean a lot!