|placed next to the candle. 5 points Question 3 The fuel used in some racing cars contains isoamyl nitrite. Select wch one of the characteristics below is classified as a chemical change/property? 5 points Question 4 The lead (Pb) concentration detected from a water-supply well is 0.15 mg/l (assume specific gravity of the well water is 1.0 at|
HAZARDOUS MATERIALS Question 1 Polar substances are described as: 5 points Question 2 Decide why the heat from a candle flame is barely tolerable when a person places s or her hand above the candle compared to when the hand is placed next to the candle. 5 points Question 3 The fuel used in some racing cars contains isoamyl nitrite. Select wch one of the characteristics below is classified as a chemical change/property? 5 points Question 4 The lead (Pb) concentration detected from a water-supply well is 0.15 mg/l (assume specific gravity of the well water is 1.0 at 25 deg C). If the drinking water standard is 15 ppb, what is your evaluation of ts data? 5 points Question 5 5 points Question 6 The vaporization of the liquid elements of gasoline constitutes a __________ change. 5 points Question 7 Radon, wch is a radioactive gas, is a member of the __________ gas family. Name one other element in ts group or family: __________. 5 points Question 8 Carbon disulfide is immiscible with water and sinks below the water because its specific gravity is __________ than 1.0. 5 points Question 9 Two buckets of unidentified liquid were discovered by a fire inspector at an abandoned warehouse. The __________ of the liquid can be measured with a hydrometer 5 points Question 10 The relative reactivity rating of a substance is denoted by a numeric code in the __________ quadrant of its NFPA hazard diamond Question 11 You are the project manager of an environmental company that was red to cleanup a storical arsenic contamination site. Soil sampling results indicated the area impacted with arsenic above action levels is 30 feet by 55 feet. The depth of the arsenic plume is three feet below ground surface. The land owner wanted to clean ts site for future development. Using your textbook, answer the questions below to help you prepare a cost estimate for ts portion of the project. . Your total response to parts a-d must be at least 200 words in length 25 points Question 12 Ts is a two-part question: Part 1: Methanol and toluene are flammable liquids whose vapor pressures at 68ºF (20ºC) are 96 and 22 mmHg, respectively. Based solely on ts data, determine wch compound poses the greater risk of fire and explosion at 68ºF (20ºC). Explain your choice. In general, discuss how vapor pressure affects the volatility of a liquid? Part 2: If the liquid in Part 1 is transferred into a container for transportation, why does DOT require that the container not be filled to the brim? Discuss your answer. Your total response to Part 1 and Part 2 must be at least 200 words in length. 13 Discuss why knowledge of the field of chemistry might be important to an emergency responder. Give some examples to support any arguments you present to the class. .