Diamond and graphite are the two primary allotropes of carbon. Neither is generally considered hazardous, but they have their own specific uses.

  1. Diamond and graphite are the two primary allotropes of carbon. Neither is generally considered hazardous, but they have their own specific uses. Choose which of the following statements is TRUE regarding these allotropes.
  Diamond and graphite undergo phase changes from solid to liquid at moderately high temperature.
  Diamond and graphite do not burn.
  Diamond and graphite have different chemical structures.
  Diamond and graphite are poor conductors of heat.

4 points   

Question 2

  1. An employee at a municipal water treatment plant was experiencing chest pain, nausea, and burning of the eyes and throat. The industrial hygienist has determined that it may be due to chlorine exposure at which levels?
  1-hr exposure at 0.5 – 2 ppm
  1-hr exposure at 2 – 20 ppm
  1-hr exposure at > 20 ppm
  8-hr exposure at 1 ppm

4 points   

Question 3

  1. Which of the following statements regarding oxygen is FALSE?
  There are three allotropes of oxygen: GOX, LOX, and ozone.
  LOX is cryogenic oxygen.
  Gaseous oxygen under increased pressure is called hyperbaric oxygen.
  Industrial facilities that use large quantities of oxygen often store it as the cryogenic liquid.

4 points   

Question 4

  1. Underground coal mining presents workers with many hazards EXCEPT which of the following? Choose the best answer.
  Potential for fire and explosion due to methane
  Prolonged inhalation of coal dust could cause pneumonoconiosis (black lung disease)
  Mine collapse
  Skin irritation

4 points   

Question 5

  1. Where in the Emergency Response Guidebook(ERG) can an environmental health and safety (EHS) and/or fire service (FS) professional find the initial isolation distance for a small leak of a phosphorus trichloride?
 

Green section

 

Orange section

 

Yellow section

 

Orange and green sections

4 points   

Question 6

  1. Although coal is no longer the favored energy source, U.S. coal mines still produced close to a billion short tons of coal. Match the description of the following chemical products obtained from or related to coal.
                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Coke

                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Carbon black

                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Coal gas

                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Coal tar pitch

                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Coal tar

                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Creosote oil

                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Coal tar distillate

                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Anthracite

                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Lignite

                                                                                                                     – A. B. C. D. E. F. G. H. I. J.

Charcoal

A.

Liquid produced from the heating of coal that can be used for waterproofing when sealing roofs

B.

Solid residue that is left when coal and coal tar pitch are heated in the absence of air

C.

Product obtained from the distillation of coal tar

D.

A finely divided form of carbon that is produced when coal tar burns in a furnace with limited air

E.

Any fraction obtained by distilling coal tar

F.

Coal that has 0.4 to 1.9% sulfur content

G.

Mixture consisting of ammonia, carbon monoxide, hydrogen cyanide, methane, and hydrogen sulfide produced when coal is heated in the absence of air

H.

Residue left after coal is heated to 350 deg C in the absence of air

I.

Coal that has a specific gravity of 1.29

J.

Residue remaining after wood, nut shells or peach pits are heated in the absence of air

20 points   

Question 7

  1. Coal is mined worldwide for use mainly at power plants to generate electricity.
    1. Discuss why coal in a crushed, granulated, or pulverized form spontaneously combusts? In addition, what health effects are associated with coal dust?
    2. Another form of carbon is activated carbon. Discuss what activatedcarbon is, and provide at least two of its industrial or medical applications.

Your total response must be at least 200 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced. Paraphrased and/or quoted material must have accompanying citations in APA format.

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— Format — Heading Sub Heading 1 Sub Heading 2 Paragraph Formatted Code — Font family — — Font size —

 

 

 

           
Pathp

Words:0

30 points   

Question 8

  1. A chlorine manufacturing company offers a rail carrier 2700 lb (1227 kg) of liquefied compressed chlorine for transportation contained in a ton-container.
    1. Describe how this rail carrier will comply with DOT transportation requirements.
    2. Provide at least two examples to demonstrate the corrosive nature of chlorine gas.

Your total response must be at least 200 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced. Paraphrased and/or quoted material must

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