91 Questions
What was the cause of Michele Dufault's death?
Accidental asphyxia by neck compression
Where was Michele Dufault when the accident occurred?
Chemistry lab machine shop
What was Michele Dufault majoring in?
Physics and astronomy
Where is Michele Dufault's hometown?
Scituate, Massachusetts
What caused the fiery accident involving Sheri Sangji in the chemistry laboratory?
Accidental ignition of a compound
Which term best describes the materials that belong to the pyrophoric class?
Ignite upon exposure to air
What is the consequence of exposure of pyrophoric materials to air?
Rapid ignition
Why is chemistry often described as having a wonderfully explosive nature?
Because teachers use fiery demonstrations to engage students
What charges were the defendants facing in the UCLA case?
Charges of violating occupational standards
Who was Sheri Sangji in relation to the case?
The deceased whose death was associated with the violations
How did Sangji sustain her injuries according to the text?
Her hair got caught in a lab machine shop
What did Harran express following Sangji's death?
Shock and grief
What term describes materials that ignite upon exposure to air?
Pyrophoric
What was Sheri Sangji's occupation at the time of the accident?
Research assistant
What university was Sheri Sangji working at when the accident occurred?
University of California, Los Angeles
Which department does the settlement mention in relation to the felony charges?
Laboratory Operations
What class of materials do pyrophoric substances belong to?
Materials that ignite spontaneously
What aspect of t-butyllithium caused the burns described in the text?
Its corrosive nature
In what context was Richard Harran charged in the UCLA case?
Inadequate laboratory safety practices
What was the specific reason for Sangji's death according to the text?
Violation of safety regulations
What was the role of Sheri Sangji in the laboratory where the accident occurred?
Research assistant
Why did Sangji sustain severe burns according to the text?
Failure to follow safety protocols
What was the official cause of Michele Dufault's death?
Neck compression
What was the primary consequence of Michele Dufault's hair getting caught in the lathe?
Asphyxiation by neck compression
How did Richard Levin describe Michele Dufault's passing in his message to Yale students and faculty?
'A true tragedy'
What was Michele Dufault majoring in at Yale University?
Physics and Astronomy
Where was Michele Dufault's body discovered after the unfortunate incident?
Chemistry lab machine shop
What is the consequence of adding a solvent to nitric acid, according to the text?
Spark leading to a flash and smoke
What is the purpose of Yale's state-of-the-art machine shop as mentioned in the text?
For faculty and staff to modify research instruments
How did the chemical reaction in the lab involving Michele Dufault occur?
Flash caused by combining substances
What did Trenton Department Captain Michael Oakley confirm about the unplanned chemical reaction?
The involvement of incompatible chemicals
What was Michele Dufault's intended career path after graduating, as mentioned in the text?
Oceanographer
What is the recommended personal protective equipment (PPE) when working in a laboratory setting?
Safety glasses/goggles, long lab coat, close-toed shoes, long pants, and gloves
What should you do before handling a chemical in the laboratory?
Check if gloves are required and what type of gloves should be worn
What is the recommended action for heating Pyrex containers in the laboratory?
Heat them in an open flame
In case of reactions producing gases, what safety equipment should be used in a laboratory setting?
Fume hood or vent
What should never be done with unlabeled chemical containers in a laboratory?
Use them without checking the contents
What is the recommended action for solid chemical spills in a laboratory?
Brush the solid spills into a dustpan and deposit in the garbage
When should vents above a lab bench be lowered for maximum effectiveness?
Over the area where fumes are produced
What is the proper procedure for dealing with an acid spill in a laboratory?
Neutralize the spill with a solid acid neutralizer and sweep up the residue
What should be done with broken glass in a laboratory setting?
Deposit in the garbage
Why is it important to keep chemicals separate in a laboratory setting?
To prevent chemical reactions from occurring
What is the appropriate way to dispose of soluble cyanides?
Convert to non-toxic cyanates using bleach
How should lead, cadmium, and antimony salts be disposed of?
Convert to insoluble sulfides and bury in landfill
What is the recommended method for destroying peroxides?
Shake with sodium metabisulfite solution
How should strong oxidizing agents be rendered safe for disposal?
Reduced with 10% sodium bisulfite and then flushed down the drain
What should be done with silver & nickel wastes according to the text?
Recover and reuse
How are organic solvents typically stored in laboratories?
Stored in glass or metal containers in the fumehood
What is the recommended method for disposing non-hazardous solids?
. Disposing of in the regular garbage
How should acids & bases be neutralized before disposal?
Mixed together to neutralize, tested with litmus paper, and then flushed down sink with large amounts of water
How can lead, cadmium, and antimony salts be made safe for disposal?
Converted to insoluble sulfides
What is an appropriate method for disposing silver & nickel wastes?
Recover and reuse
What term best describes materials that ignite spontaneously upon exposure to air?
Pyrophoric materials
Which type of fire extinguisher is most suitable for fires involving halogenated hydrocarbons?
Dry chemical fire extinguisher
What is the purpose of Met-L-X in laboratory safety?
Extinguishing combustible metal fires
In a laboratory setting, which type of fire is wet chemical fire extinguishers most effective against?
Class K fires (cooking oils)
Why are organic solvents typically stored in flammable storage cabinets in laboratories?
To minimize the risk of fire
What specific charges were the defendants in the UCLA case facing in relation to the death of Sheharbano Sangji?
Violating fire safety protocols
How did Richard Harran describe Sheri Sangji's death?
A shocking event resulting from severe burns
In what context was Sangji's abdominal wall burned off?
Handling t-butyllithium without proper safety gear
What role did Sheri Sangji have at the time of the lab accident?
Research Assistant
What was the cause of Michele Dufault's passing at Yale University?
Hair Entanglement in Machinery
What is the primary purpose of Met-L-X, as mentioned in the text?
Extinguishing fires caused by flammable metals
In the context of the text, what is Halotron commonly used for in laboratory settings?
Extinguishing fires without leaving any residue
What is the recommended action when facing a fire involving wet chemicals in a laboratory?
Evacuate the area and then call emergency services
What is the function of a wet chemical extinguisher in laboratory safety?
Extinguishing fires involving electrical equipment
In the context of laboratory safety, what do Halogenated Hydrocarbons primarily refer to?
Compounds that can be toxic when inhaled
What is the consequence when incompatible chemicals react in a laboratory setting, as described in the text?
They lead to a flash and smoke, possibly sparking a fire.
Based on the text, what safety measure was not followed that led to the chemical reaction in the lab?
Proper storage of chemicals
In the incident described, what was the immediate result of adding a solvent to nitric acid?
Formation of a flash and smoke
What was the primary reason for the guard and two students being treated after the chemical reaction in the lab?
Exposure to a plume of vapors
What was indicated as access requirements for Yale's state-of-the-art machine shop where the incident occurred?
Completion of a shop course
What is the correct procedure to follow when heating flammable materials in a laboratory setting?
Heat the material using a Bunsen burner in a fume hood
What is the safest approach for disposing of solid chemical spills in a laboratory?
Use proper spill kits and follow the specific disposal instructions for each chemical spilled
What is the recommended method for neutralizing acids and bases before disposal in a laboratory?
Add water to acids and bases slowly while stirring, then dispose following guidelines
What type of personal protective equipment (PPE) should be worn when handling wet chemicals in a laboratory?
Gloves, long lab coat, safety glasses, close-toed shoes
What is the appropriate way to dispose of soluble cyanides in a laboratory environment?
Follow specific disposal guidelines for hazardous waste when dealing with soluble cyanides
What type of fire are wet chemical fire extinguishers most effective against?
Class B fires
What is the purpose of Met-L-X in laboratory safety?
To extinguish fires caused by combustible metals
What term best describes the materials that belong to the pyrophoric class?
Flammable
In a laboratory setting, which type of fire extinguisher is most suitable for fires involving halogenated hydrocarbons?
Dry chemical fire extinguishers
Why should vents above a lab bench be lowered for maximum effectiveness?
To ensure proper ventilation over the fume-producing area
What is the recommended procedure for disposing of lead, cadmium, and antimony salts in a laboratory setting?
Convert to insoluble sulfides and bury in a landfill
Which method is suggested for rendering peroxides safe for disposal in a laboratory?
Shaking with sodium metabisulfite solution
What is the appropriate way to dispose of soluble cyanides according to the text?
React with bleach to form non-toxic cyanates
How are strong oxidizing agents like potassium permanganate and sodium chlorate rendered safe for disposal?
Neutralized with 10% sodium bisulphite
What is the purpose of Met-L-X mentioned in the text regarding laboratory safety?
To extinguish metal fires
Which class of materials belong to pyrophoric substances according to the text?
Materials that ignite upon exposure to air
What type of fire are wet chemical fire extinguishers most effective against in a laboratory setting?
Flammable liquid fires
How should acids and bases be neutralized before disposal according to the information provided?
Neutralized, tested with litmus paper, and then flushed down sink
How should organic solvents like diethyl ether and toluene typically be stored in laboratories?
In metal containers within a fumehood
Test your knowledge on laboratory safety protocols and practices specifically for chemistry laboratories. Learn about the importance of following safety guidelines to prevent accidents and injuries.
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