Search
Info
Warning
Danger

Study Resources (Chemistry)

11) What percentage of water on the earth is fresh water? A) 2% B) 25% C) 45% D) 98% 12) The majority of fresh water is found in A) lakes. B) groundwater. C) polar ice caps. D) rivers and streams. 13) Contaminated water supplies and lack of adequate sanitation kill approximately ________ people worldwide each year. A) 3,600,000 B) 200,000 C) 1,000,000 D) 700,000 14).
0 Views
View Answer
31) Which of the following will have the greatest amount of entropy? A) gas B) liquid C) solid D) All have the same amount of entropy. 32) Perhaps the first mechanical device used to convert energy into a more useful form was the A) steam engine. B) waterwheel. C) windmill. D) nuclear reactor. 33) The first fuel was A) coal. B).
0 Views
View Answer
41) Which one of the following is NOT a property of carbon monoxide? A) odorless B) tasteless C) colorless D) undetectable 42) Usually the symptom of carbon monoxide poisoning is A) shortness of breath. B) uncontrollable shaking. C) drowsiness. D) yellowing of the eyes and skin. 43) Carbon monoxide pollution is best described as a(n) A) rural problem. B) urban problem. C) global.
0 Views
View Answer
  13.1   Multiple Choice Questions 1) The layer of the atmosphere in which the ozone layer is found is called the A) biosphere. B) stratosphere. C) troposphere. D) ionosphere. 2) The most abundant component of dry air is A) argon. B) carbon dioxide. C) nitrogen. D) oxygen. 3) The second most abundant component of dry air is A) argon. B) carbon dioxide. C) nitrogen. D) oxygen. 4).
3 Views
View Answer
14.3   Short Answer Questions 1) Ice is ________ (less/more) dense than liquid water. 2) What are two relatively unique physical properties of water?  What impact do these properties have on life on Earth? 3) The heat capacity of water is ________ (greater/less) than that of iron. 4) Water has a relatively ________ heat capacity. 5).
0 Views
View Answer
11) From an organic chemistry perspective, carbohydrates are polyhydroxy A) carboxylic acids. B) aldehydes and ketones. C) amines. D) amino acids. 12) Which of the following is a monosaccharide? A) fructose B) sucrose C) starch D) amylose 13) Which of the following serves as dietary fiber? A) starch B) galactose C) cellulose D) fructose 14) Which of the following is a polysaccharide? A) glucose B) fructose C) starch D).
0 Views
View Answer
41) How many different tripeptides can be made that contain serine, glycine and phenylalanine? A) 1 B) 2 C) 3 D) 6 42) The primary structure of a protein is determined by A) the amino acid composition. B) the order of amino acids in the protein. C) the hydrogen bonding that gives the protein three dimensional shape. D) the.
0 Views
View Answer
81) In the stratosphere, the reactivity of CFCs is A) low. B) moderate. C) high. D) comparable to neon. 82) The impact of CFCs on the ozone layer is amplified by the fact that A) CFCs replicate in the stratosphere. B) CFCs decompose before reaching the stratosphere. C) CFCs react with oxygen to produce many reactive intermediates. D) one.
0 Views
View Answer
15.2   True/False Questions 1) The United States has 5% of the world's population and uses 25% of the world's energy. 2) The United States uses energy more efficiently than other countries do. 3) Chemical reactions that release heat to the surroundings are endothermic reactions. 4) When two compounds react, the amount of energy released.
0 Views
View Answer
  15.1   Multiple Choice Questions 1) The SI unit of energy is the A) joule. B) calorie. C) gram. D) watt. 2) Approximately what percentage of the total solar radiation that falls upon the earth is immediately reflected back into space? A) 60% B) 30% C) 90% D) 75% 3) Approximately what percentage of solar radiation is used to power the water.
3 Views
View Answer
61) The EPA drinking water standard for arsenic is 0.040 mg/L.  What is this concentration in ppm? A) 0.040 B) 4 C) 40 D) 4000 62) One of the potential problems with chlorination of waste water is that it A) provides no residual protection. B) is ineffective against pathogenic bacteria. C) produces low levels of chlorinated hydrocarbons. D) is.
0 Views
View Answer
11) Sulfuric acid is less irritating to the respiratory system than sulfur dioxide is. 12) Fine particulate particles (< 2.5 µm diameter) are more harmful to people than larger particles (>10 µm diameter) are. 13) All except the most severe cases of CO poisoning are reversible. 14) Low level carbon monoxide exposure over.
0 Views
View Answer
  16.1   Multiple Choice Questions 1) The substructures that distinguish plant and animal cells are A) ribosomes. B) nuclei. C) mitochondria. D) chloroplasts. 2) In cells, protein synthesis occurs on the A) nucleus. B) mitochondria. C) ribosomes. D) cytoplasm. 3) In cells, primary energy production occurs in the A) mitochondria. B) nucleus. C) ribosomes. D) cell membrane. 4) Cell nutrients and waste must pass through the cell A).
2 Views
View Answer
31) It is cost effective to try to eliminate all air pollution. 32) Since 1980, the concentration of the six EPA criteria air pollutants has increased significantly. 13.3   Short Answer Questions 1) Carbon monoxide blocks the ability of ________ to bind and transport ________. 2) The only symptom of carbon monoxide poisoning is usually.
0 Views
View Answer
21) EROEI stands for Energy Return on Energy Invested. 22) Coal liquefaction and gasification have the advantage of producing gases and liquids that are easy to transport. 23) Nuclear power plants generate large amounts of air pollution. 24) Nuclear fusion is the source of energy that powers the sun. 25) Tritium is an isotope.
0 Views
View Answer
41) A substance that burns readily and releases significant amounts of energy is a(n) A) reducing agent. B) fuel. C) endotherm. D) catalyst. 42) The most abundant fossil fuel in the United States is A) coal. B) natural gas. C) petroleum. D) wood. 43) The United States is estimated to have approximately what percentage of the world's coal reserves? A) 10% B).
0 Views
View Answer
101) A breeder reactor converts A) nonfissionable U-238 to fissionable U-235. B) nonfissionable U-238 to fissionable Pu-239. C) fissionable U-235 to fissionable U-238. D) fissionable U-235 to fissionable Pu-239. 102) Breeder reactors allow for the use of A) abundant and naturally occurring U-235 as a nuclear fuel. B) abundant and naturally occurring U-238 as a nuclear fuel. C).
0 Views
View Answer
21) Kilauea volcano in Hawaii emits 200-300 tons of sulfur dioxide into the atmosphere each day. This is an example of A) the impact of natural processes on the earth's environment. B) air pollution from a natural source. C) the magnitude of the chemistry associated with the environment. D) The Kilauea volcano is an.
0 Views
View Answer
41) Which of the following compounds does NOT result from the anaerobic breakdown of organic material? A) ammonia B) carbon dioxide C) hydrogen sulfide D) methane 42) At any given time, what proportion of the world's hospital beds are occupied by people with waterborne diseases? A) 10% B) 25% C) 50% D) 85% 43) Water use is an important aspect.
0 Views
View Answer
31) Which of the following is used to remove particulate matter from smokestack gases? A) bag filtration B) electrostatic precipitators C) wet scrubbers D) All of the above are used to remove particulate matter. 32) Which of the following is most commonly used to remove sulfur dioxide from smokestack gases? A) bag filtration B) electrostatic precipitators C) limestone-dolomite.
0 Views
View Answer
91) Which of the following greenhouse gases is most efficient at trapping heat? A) CFCs B) CH4 C) CO2 D) H2O 92) The process for removing CO2 from the atmosphere or collecting it from large emission sources and storing it in underground reservoirs is known as A) carbonation. B) carbon sequestration. C) climate change. D) greenhouse control. 93) Which.
0 Views
View Answer
111) Photovoltaic cells convert A) solar energy into chemical energy. B) solar energy into mechanical energy. C) solar energy into electrical energy. D) solar energy into heat energy. 112) Most solar cells are composed primarily of A) arsenic. B) boron. C) carbon. D) silicon. 113) If very pure silicon is doped with a small amount of arsenic, the resulting crystal.
0 Views
View Answer
51) Which of the following forces is NOT involved in the determining the structure of proteins? A) base pairing B) disulfide linkages C) dispersion forces D) hydrogen bonds 52) The interactions between different chains in a protein contribute to its ________ structure. A) primary B) quaternary C) secondary D) tertiary 53) Which of the following is NOT involved in determining.
0 Views
View Answer
11) The industrial fixation of nitrogen to produce nitrogen fertilizers has drastically increased food supply primarily because A) plants need nitrogen. B) plants fix nitrogen slowly. C) the availability of fixed nitrogen is often a limiting factor in plant growth. D) nitrogen in the atmosphere has decreased over the past two centuries. 12) Which of.
1 Views
View Answer
71) In secondary treatment of sewage, which removes organic matter? A) chlorine B) ozone C) aluminum sulfate and lime D) aerobic bacteria 72) Secondary treatment of wastewater is not effective for removal of A) suspended matter. B) dissolved organics. C) nitrates and phosphates. D) bacteria. 73) Charcoal filtration of wastewater is an excellent method for the removal of A) dissolved.
0 Views
View Answer
51) When gasoline undergoes complete combustion, carbon dioxide and water are produced.  However, these reactions are generally incomplete combustions, and there are side reactions which produce small amounts of harmful products.  These pollutants include all of the following EXCEPT A) carbon monoxide. B) lead. C) nitrogen oxides. D) volatile organic compounds. 52) Organic substances that.
0 Views
View Answer
14.2   True/False Questions 1) You can live for weeks without food, but only days without water. 2) The volume of water increases as it freezes. 3) The density of ice is greater than the density of liquid water. 4) Most of the water available on the earth's surface is potable. 5) The principal cations in.
0 Views
View Answer
61) Running an engine with a richer (more fuel, less air) combustion mixture lowers nitrogen oxide emissions from automobiles.  The problem is that A) hydrocarbon emission increases. B) carbon monoxide emission increases. C) fuel efficiency decreases. D) all of the above occur. 62) Which of the following contributes least to the problem of photochemical smog? A).
0 Views
View Answer
  14.1   Multiple Choice Questions 1) Heat capacity is a measure of the heat required to A) expand the volume of a substance. B) evaporate a substance. C) freeze a substance. D) change the temperature of a substance 1°C. 2) The dramatic temperature changes on the moon between day and night are not seen on the earth.
3 Views
View Answer
51) Volatile organic compounds (VOC) make up one category of contaminants in groundwater.  Which one of the following is NOT a VOC? A) mica B) chloroform C) toluene D) benzene 52) A volatile organic compound that is widely used as a dry-cleaning solvent and degreasing compound and is now found in trace amounts in groundwater.
0 Views
View Answer
71) Indoor "air cleaners" are often advertized.  However, some air cleaners actually generate which of the following pollutants? A) mold B) CFCs C) methane D) ozone 72) All of the following contribute to increasing indoor air pollution levels EXCEPT A) gas kitchen stoves. B) mold. C) improving insulation and sealing air leaks around windows and doors. D) All of.
1 Views
View Answer
81) The major components of petroleum is/are A) benzene. B) water. C) organic compounds of sulfur. D) hydrocarbons. 82) Which of the following products is NOT made from petroleum? A) industrial organic solvents B) detergents C) plastics D) All of the above are made from petroleum. 83) The petroleum fraction that has the lowest boiling point is A) gasoline. B) kerosene. C) heating.
0 Views
View Answer
21) Acid rain slowly erodes marble statues because sulfuric acid will react with the calcium carbonate in marble. 22) The concentration of air pollutants is almost always lower indoors than outdoors. 23) According to the EPA, second-hand smoke is a Class A carcinogen. 24) Applying the principles of green chemistry to a process.
0 Views
View Answer
51) When coal is burned, mineral impurities are converted to A) sulfur dioxide gas that goes up the smokestack. B) carbon dioxide and water. C) metal oxide solids that remain behind as ash. D) All of the above are products of burning coal. 52) When coal containing sulfur is burned, the sulfur is converted to A).
0 Views
View Answer
31) Which company's industrial waste water would have a relatively high BOD? A) Tasty Tomato Canning Company. B) Shameless Stripper Coal Mine C) Bullworks Ammonia Company D) Spotless Steel Works, Inc. 32) Under aerobic conditions, the carbon in decaying vegetation in a lake ends up primarily as A) methane, CH4. B) cyanide, CN-. C) carbon monoxide, CO. D) carbon.
0 Views
View Answer
13.2   True/False Questions 1) The layer of the atmosphere in which we interact is called the stratosphere. 2) The World Health Organization estimates that over 3.6 million people die from indoor or outdoor air pollution every year. 3) Nitrogen can be fixed by lightening. 4) One of the steps in the nitrogen cycle produces.
1 Views
View Answer
21) Unsaturated fats are often liquids called A) hydrogenated fats. B) oils. C) triglycerides. D) glycerol. 22) A fatty acid is determined to have 17 carbon atoms.  This fatty acid is probably from a A) synthetic source. B) natural source. C) plant. D) animal. 23) Iodine number is a measure of A) the number of iodine atoms in a carbohydrate. B) the.
0 Views
View Answer