Type:
Test Bank
Resource:
Introductory Chemistry Essentials
Edition:
4th Edition
Author(s):
Nivaldo J. Tro
Introductory Chemistry, 4e (Tro) Chapter 1 The Chemical World True/False Questions 1) Chemicals make up everything around you, including your own body. Answer: TRUE Diff: 1 Page Ref: 1.1 2) Chemists study the properties of substances and the particles that compose those substances. Answer: TRUE Diff: 1 Page Ref: 1.1 3) When a sealed can of soda pop is opened, the carbon dioxide gas fizzes out because the pressure is released. Answer: TRUE Diff: 1 Page Ref: 1.1 4) The properties of water do not depend on how the atoms are bonded together in the molecule. Answer: FALSE Diff: 1 Page Ref: 1.1 5) Both carbon dioxide molecules and water molecules consist of three atoms bonded together in a straight line. Answer: FALSE Diff: 1 Page Ref: 1.1 6) Molecules are responsible for scattering light which causes the colors of the sunset. Answer: TRUE Diff: 1 Page Ref: 1.2 7) Atoms and molecules determine how matter behaves. Answer: TRUE Diff: 1 Page Ref: 1.3 8) Chemistry is the science that seeks to understand what matter does by studying living organisms. Answer: FALSE Diff: 1 Page Ref: 1.3 9) The scientific method emphasizes reason as the way to understand the world. Answer: FALSE Diff: 1 Page Ref: 1.4 10) A hypothesis can never be proven as wrong. Answer: FALSE Diff: 1 Page Ref: 1.4 11) A theory is always true and can never be proven as wrong. Answer: FALSE Diff: 1 Page Ref: 1.4 1 ..
12) Theories can be tested and validated through experimentation. Answer: TRUE Diff: 1 Page Ref: 1.4 13) If experimental results contradict a hypothesis, the hypothesis must be either revised or discarded. Answer: TRUE Diff: 1 Page Ref: 1.4 14) The Greek philosophers used observation and experimentation to understand the world. Answer: FALSE Diff: 1 Page Ref: 1.4 15) A scientific law is a brief statement that summarizes past observations and predicts future ones. Answer: TRUE Diff: 1 Page Ref: 1.4 16) The law of conservation of mass states, "In a chemical reaction matter can be created and destroyed." Answer: FALSE Diff: 1 Page Ref: 1.4 17) Antoine Lavoisier observed that burning objects in a closed container resulted in a loss of mass. Answer: FALSE Diff: 1 Page Ref: 1.4 18) A scientific theory describes the underlying reasons for observations and laws. Answer: TRUE Diff: 1 Page Ref: 1.4 19) The scientific method ensures that poor theories are eliminated over time and good theories remain. Answer: TRUE Diff: 1 Page Ref: 1.4 20) A theory is the equivalent of an opinion. Answer: FALSE Diff: 1 Page Ref: 1.4 21) Antoine Lavoisier proposed the atomic theory. Answer: FALSE Diff: 1 Page Ref: 1.4 22) John Dalton proposed the atomic theory. Answer: TRUE Diff: 1 Page Ref: 1.4 23) The first step in acquiring scientific knowledge is often the observation or measurement of some aspect of nature. Answer: TRUE Diff: 1 Page Ref: 1.4
2 ..
24) If a hypothesis is falsifiable, it means that the hypothesis was once considered true but is now considered false. Answer: FALSE Diff: 1 Page Ref: 1.4 25) Observations from experiments are used to test theories. Answer: TRUE Diff: 1 Page Ref: 1.4 26) A theory can only exist after many experiments have validated a hypothesis. Answer: TRUE Diff: 1 Page Ref: 1.4 27) Scientific theories are also called models. Answer: TRUE Diff: 1 Page Ref: 1.4 28) The atomic theory explains why the law of conservation of mass is true. Answer: TRUE Diff: 1 Page Ref: 1.4 29) An established theory is the pinnacle of scientific understanding. Answer: TRUE Diff: 1 Page Ref: 1.4 30) Quantification is an important tool in understanding chemistry. Answer: TRUE Diff: 1 Page Ref: 1.5 31) Quantification involves measurement as part of an observation. Answer: TRUE Diff: 1 Page Ref: 1.5 32) Lavoisier developed the law of conservation of mass. Answer: FALSE Diff: 1 Page Ref: 1.5 33) The phlogiston theory of combustion is still considered correct today. Answer: FALSE Diff: 1 Page Ref: 1.5
3 ..
Multiple Choice Questions 1) Which of the following statements about soda pop is FALSE? A) Soda pop is a chemical mixture of mostly sugar, water and carbon dioxide. B) The molecules important to fizzing are carbon dioxide and water. C) The carbon dioxide is forced to mix with the water by the presence of sugars. D) When a can is opened, the pressure release allows carbon dioxide to form bubbles. E) All of the above statements are true. Answer: C Diff: 1 Page Ref: 1.1 2) Which of the following items does NOT contain chemicals? A) drain cleaner B) organically grown vegetables C) air D) insecticides E) All of the above contain chemicals. Answer: E Diff: 1 Page Ref: 1.2 3) A good definition of chemistry is: A) the science that seeks to understand what matter does by studying what atoms and molecules do. B) the science that seeks to understand what living organisms do by studying the molecules that make up the organism. C) the science that seeks to understand what the universe does by studying interactions of molecules with atoms. D) the science that seeks to understand the interactions of molecules for the sake of advancing human control over nature. E) none of the above Answer: A Diff: 1 Page Ref: 1.3 4) Which statement about the scientific method is TRUE? A) The scientific method emphasizes reason as the way to understand the world. B) The scientific method emphasizes observation and reason as the way to understand the world. C) The scientific method emphasizes observation and experimentation as the way to understand the world. D) The scientific method emphasizes scientific laws as the way to understand the world. E) All of the above statements are false. Answer: C Diff: 1 Page Ref: 1.4 5) Which of the statements below is NOT part of the scientific method? A) observation and measurement B) formation of a hypothesis C) testing of a hypothesis by experimentation D) refinement of a hypothesis as needed E) All of the above steps are part of the scientific method. Answer: E Diff: 1 Page Ref: 1.4
4 ..
6) Which statement about a hypothesis is TRUE? A) It is a tentative interpretation or explanation. B) It has the potential to be proven wrong. C) It can be tested by experiments. D) It is part of the scientific method. E) All of the above statements are true. Answer: E Diff: 1 Page Ref: 1.4 7) The definition of a scientific law is: A) the same as a hypothesis. B) a way of learning that emphasizes observation and experimentation. C) the underlying reason for a scientific theory. D) a number of similar observations generalized into a brief statement summarizing past observations and predicting new ones. E) none of the above Answer: D Diff: 1 Page Ref: 1.4 8) What term best describes a brief statement that summarizes many past observations and predicts new ones? A) experiment B) hypothesis C) scientific law D) theory E) none of the above Answer: C Diff: 1 Page Ref: 1.4 9) Who discovered the law of conservation of mass? A) John Dalton B) Antoine Lavoisier C) Nivaldo Tro D) John Dalton and Antoine Lavoisier E) none of the above Answer: B Diff: 1 Page Ref: 1.4 10) Which of the following is an example of a scientific law? A) All matter is composed of small, indestructible particles called atoms. B) In a chemical reaction, matter is neither created nor destroyed. C) When a can of soda pop is opened, a fizzing sound is heard. D) Flammable objects contain phlogiston. E) none of the above Answer: B Diff: 1 Page Ref: 1.4
5 ..
11) What is the definition of a scientific theory? A) a brief statement that summarizes past observations and predicts future ones B) a model that explains the underlying reasons for observations and laws C) the equivalent of a scientific opinion which others may disagree with D) a method of learning that emphasizes reason as the way to understand the world E) none of the above Answer: B Diff: 1 Page Ref: 1.4 12) Who discovered the atomic theory? A) John Dalton B) Antoine Lavoisier C) Nivaldo Tro D) John Dalton and Antoine Lavoisier E) none of the above Answer: A Diff: 1 Page Ref: 1.4 13) Which of the following is an example of an observation? A) All matter is composed of small, indestructible particles called atoms. B) Reactions occur due to the transfer of electrons. C) When a can of soda pop is opened, a fizzing sound is heard. D) Flammable objects contain phlogiston. E) none of the above Answer: C Diff: 1 Page Ref: 1.4 14) A sample of wood with a mass of 3.0 grams was burned in an open dish. The ashes weighed 1.2 grams. What happened to the rest of the wood? A) The remaining mass was destroyed. B) The remaining 1.8 grams was converted into gaseous compounds. C) Nothing, the burned wood simply has a mass of 1.2 grams. D) The remaining 1.8 grams was converted into heat. E) none of the above Answer: B Diff: 2 Page Ref: 1.4 15) Which statement accurately describes the purpose of experiments? A) Experiments are designed to produce the results predicted by a theory. B) Experiments can be replaced by a simple, logical reasoning of known facts. C) Experiments are designed to produce unexplainable results for further investigation. D) Experiments look for other observable predictions of a theory. E) none of the above Answer: D Diff: 1 Page Ref: 1.4
6 ..
16) Which of the following would be considered a theory? A) Glass is fragile. B) Hot air rises. C) Gasoline has a very strong odor. D) Helium balloons float because helium is less dense than air. Answer: D Diff: 1 Page Ref: 1.4 17) The key to success in chemistry is: A) curiosity. B) mathematical skills. C) commitment. D) practice. E) all of the above Answer: E Diff: 1 Page Ref: 1.5
Essay Questions 1) What is chemistry? Answer: Chemistry is branch of science that explains the properties and behavior of different forms of matter, in the broadest sense, by helping us understand the atoms and molecules that compose them. Diff: 1 Page Ref: 1.3 2) What are the important characteristics of the scientific method? Answer: The important characteristics of the scientific method include the observation of phenomena, the formulation of a hypothesis to explain the observed phenomena, the testing of the hypothesis by experiment, and the formulation of laws and theories. Diff: 2 Page Ref: 1.4 3) What is the difference between a scientific law and a scientific theory? Answer: A statement based on a number of similar observations that may predict future outcomes of similar experiments is a scientific law. Laws are subject to further experiments and may be proven wrong or be validated. Theories are models of the way nature behaves, and are the products of several well-established and tested scientific laws. Diff: 3 Page Ref: 1.4 4) Charcoal was burned in a barbecue grill. The ashes that remained weighed considerably less than the charcoal that was burned. Does this mean that the law of conservation of mass is wrong? Explain. Answer: No. The gaseous products formed during the combustion of charcoal escaped into the air and are not accounted for. If all those products could have been collected and weighed along with the ashes, the total mass of the products would have been equal to the mass of the charcoal. Diff: 3 Page Ref: 1.4
7 ..
Introductory Chemistry, 4e (Tro) Chapter 2 Measurement and Problem Solving True/False Questions 1) Numbers are usually written so that the uncertainty is in the last reported digit. Answer: TRUE Diff: 1 Page Ref: 2.1 2) The decimal number 0.0000010 expressed in scientific notation is 1.0 × 106. Answer: FALSE Diff: 1 Page Ref: 2.2 3) The decimal number 0.0210 expressed in scientific notation is 2.10 × 10-2. Answer: TRUE Diff: 1 Page Ref: 2.2 4) The mass of an object, 4.55 × 10-3 g, expressed in decimal notation is 0.000455 g. Answer: FALSE Diff: 1 Page Ref: 2.2 5) If you count 7 pennies, you can only report one significant figure in that measurement. Answer: FALSE Diff: 1 Page Ref: 2.3 6) Exact numbers have an unlimited number of significant figures. Answer: TRUE Diff: 1 Page Ref: 2.3 7) Zeros located between two numbers are not significant. Answer: FALSE Diff: 1 Page Ref: 2.3 8) Zeros located after a number and after a decimal point are significant. Answer: TRUE Diff: 1 Page Ref: 2.3 9) Trailing zeros at the end of a number, but before an implied decimal point, are ambiguous. Answer: TRUE Diff: 1 Page Ref: 2.3 10) The number 0.010100 has five significant figures. Answer: TRUE Diff: 1 Page Ref: 2.3 11) The number 4,450,000.0 has 3 significant figures. Answer: FALSE Diff: 1 Page Ref: 2.3 1 ..
12) The number 7.20 × 103 contains three significant figures. Answer: TRUE Diff: 1 Page Ref: 2.3 13) When the temperature of an object is reported as 23.7°C, the actual temperature can be assumed to be between 23.6°C and 23.8°C. Answer: TRUE Diff: 1 Page Ref: 2.3 14) Scientific numbers are reported so that every digit is certain except the last, which is estimated. Answer: TRUE Diff: 1 Page Ref: 2.3 15) When the number 65.59 is rounded to contain 2 significant figures, it becomes 66.0. Answer: FALSE Diff: 1 Page Ref: 2.4 16) When the number 2.35 is rounded to contain 2 significant figures it becomes 2.4. Answer: TRUE Diff: 1 Page Ref: 2.4 17) In multiplication and division calculations, the answer will have the same number of decimal places as the number carrying the fewest decimal places. Answer: FALSE Diff: 1 Page Ref: 2.4 18) In multiplication or division calculations, the answer will have the same number of decimal places as the number carrying the most decimal places. Answer: FALSE Diff: 1 Page Ref: 2.4 19) In addition or subtraction, the result carries the same number of decimal places as the quantity carrying the fewest decimal places. Answer: TRUE Diff: 1 Page Ref: 2.4 20) The mass of an object depends on gravity. Answer: FALSE Diff: 1 Page Ref: 2.5 21) The standard unit of length in the SI system is the cm. Answer: FALSE Diff: 1 Page Ref: 2.5 22) The standard unit of mass in the SI system is the kg. Answer: TRUE Diff: 1 Page Ref: 2.5
2 ..
23) The prefix nano represents the multiplier 0.000000001. Answer: TRUE Diff: 1 Page Ref: 2.5 24) The prefix micro represents the multiplier 0.001. Answer: FALSE Diff: 1 Page Ref: 2.5 25) A nine gigagram mass is heavier than a nine nanogram mass. Answer: TRUE Diff: 1 Page Ref: 2.5 26) There are 1000 kilometers in one meter. Answer: FALSE Diff: 1 Page Ref: 2.5 27) You do not need to write units in calculations as long as you can remember them. Answer: FALSE Diff: 1 Page Ref: 2.6 28) Conversion factors are constructed from any two quantities known to be equivalent. Answer: TRUE Diff: 1 Page Ref: 2.6 29) A conversion factor is a fraction with one unit on top and a different unit on the bottom. Answer: TRUE Diff: 1 Page Ref: 2.6 30) A solution map diagrams the steps required to get from the starting point to the end point of a calculation problem. Answer: TRUE Diff: 1 Page Ref: 2.6 31) A solution map is the section near the back of the textbook that provides the answers to assigned problems. Answer: FALSE Diff: 1 Page Ref: 2.6 32) One mile measures 5,280 feet long, so one square mile is equivalent to 5,280 square feet. Answer: FALSE Diff: 1 Page Ref: 2.8 33) Given that 1 inch equals 2.54 centimeters, then 1 cubic inch equals 16.387 cubic centimeters. Answer: TRUE Diff: 1 Page Ref: 2.8 34) All solids have the same density. Answer: FALSE Diff: 1 Page Ref: 2.9
3 ..
35) Suppose a perfectly symmetric metal rod of the element lead has a density of 11.4 g/cm 3. If this rod is cut in half, the density of each piece is now 5.7 g/cm3. Answer: FALSE Diff: 1 Page Ref: 2.9 36) If you are given the mass and density of an object, you can calculate the volume by using the equation: V = m/d. Answer: TRUE Diff: 1 Page Ref: 2.9 37) If you know the density of a liquid and its volume, the mass of the liquid may be calculated using the equation: m = V/d. Answer: FALSE Diff: 1 Page Ref: 2.9
Multiple Choice Questions 1) The correct scientific notation for the number 0.00050210 is: A) 5.0210 × 104 B) 5.021 × 10-4 C) 5.021 × 104 D) 5.0210 × 10-4 E) none of the above Answer: D Diff: 1 Page Ref: 2.2 2) The correct scientific notation for the number 500.0 is: A) 5 × 102 B) 5.00 × 102 C) 5.000 × 102 D) 5 × 10-2 E) none of the above Answer: C Diff: 1 Page Ref: 2.2 3) The distance between the two hydrogen atoms in a molecule of water is 0.000000000172 m. Express this distance in scientific notation. A) 1.72 ×10-9 m B) 1.72 × 10-10 m C) 0.172 × 10-10 m D) 17.2 × 109 m E) 1.72 × 1010 m Answer: B Diff: 1 Page Ref: 2.2
4 ..
4) The wavelength of blue light is 0.00000045 m. Express this wavelength in scientific notation. A) 4.5 × 10-6 m B) 4.5 × 106 m C) 4.5 × 10-7 m D) 4.5 × 107 m E) 0.45 × 10-7 m Answer: C Diff: 1 Page Ref: 2.2 5) The correct decimal representation of 1.201 × 10 -7 is: A) 12010000 B) 0.0001201 C) 0.0000001201 D) 1201.000 E) none of the above Answer: C Diff: 1 Page Ref: 2.2 6) The correct decimal representation of 6.453 × 10 3 is: A) 6,453 B) 0.006453 C) 6.5 × 103 D) 6.453 E) none of the above Answer: A Diff: 1 Page Ref: 2.2 7) Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25 and 26 degree Celsius marks. We should properly report the temperature measurement as A) 25°C B) 26°C C) 25.5°C D) 25.50°C E) 25.55°C Answer: C Diff: 1 Page Ref: 2.3 8) In the number 48.93, which digit is estimated? A) 4 B) 8 C) 9 D) 3 E) None of the above, all digits are certain. Answer: D Diff: 1 Page Ref: 2.3
5 ..
9) There are exactly 2.54 centimeters in 1 inch. When using this conversion factor, how many significant figures are you limited to? A) 1 B) 3 C) ambiguous D) depends on if you are using it in multiplication/division or addition/subtraction E) infinite number of significant figures Answer: E Diff: 1 Page Ref: 2.3 10) The correct number of significant figures in the number 865,000 is: A) 3 B) 6 C) 4 D) ambiguous E) none of the above Answer: D Diff: 1 Page Ref: 2.3 11) The correct number of significant figures in the number 1.250100 is: A) 5 B) 7 C) 4 D) ambiguous E) none of the above Answer: B Diff: 1 Page Ref: 2.3 12) The correct number of significant figures in the number 0.027090 is: A) 7 B) 6 C) 5 D) ambiguous E) none of the above Answer: C Diff: 1 Page Ref: 2.3 13) The correct number of significant figures in the number "9.080 x 10-4" is A) 3 B) 4 C) 5 D) ambiguous E) none of the above Answer: B Diff: 1 Page Ref: 2.3
6 ..
14) The correct number of significant figures in the number 4.0 × 10-2 is: A) 1 B) 2 C) 3 D) ambiguous. E) none of the above Answer: B Diff: 1 Page Ref: 2.3 15) The correct number of significant figures in the number 0.002320 is: A) 7 B) 4 C) 3 D) ambiguous E) none of the above Answer: B Diff: 1 Page Ref: 2.3 16) Which of the following statements is NOT part of the rules for determining significant figures? A) Non-zero digits at the end of a number are not significant. B) Zeroes between two numbers are significant. C) Zeroes to the left of the first non-zero number are not significant. D) Zeroes at the end of a number, but before a decimal are ambiguous. E) All of the above statements are part of the rules. Answer: A Diff: 1 Page Ref: 2.3 17) When the value 4.449 is rounded to two significant figures, the number should be reported as: A) 4.4 B) 4.5 C) 4.44 D) 4.45 E) none of the above Answer: A Diff: 1 Page Ref: 2.4 18) How many significant digits should be reported in the answer to the following calculation? (4.3 - 3.7) × 12.3= A) 1 B) 2 C) 3 D) 4 E) none of the above Answer: A Diff: 2 Page Ref: 2.4
7 ..
19) Determine the answer for the equation below with correct number of significant figures: 3.215 × 13.2 ÷ 0.218 = ________ A) 194.669 B) 195 C) 194.7 D) 194.67 E) none of the above Answer: B Diff: 2 Page Ref: 2.4 20) Determine the answer for the equation below with correct number of significant figures: 1.2 × 1.79 = ________ A) 2.148 B) 2.15 C) 2.1 D) 2.2 E) none of the above Answer: C Diff: 2 Page Ref: 2.4 21) Determine the answer to the following equation with correct number of significant figures: 106 ÷ 9.02 × 1.9 = ________ A) 22.32816 B) 22.328 C) 22.3 D) 22 E) none of the above Answer: D Diff: 2 Page Ref: 2.4 22) Determine the answer to the following equation with correct number of significant figures: 2.02 + 8.102 - 0.0297 = ________ A) 10.0923 B) 10.09 C) 10.1 D) 10.092 E) none of the above Answer: B Diff: 2 Page Ref: 2.4 23) Determine the answer to the following equation with correct number of significant figures: 13.96 - 4.9102 + 71.5 = ________ A) 80.5498 B) 81 C) 80.5 D) 80.55 E) none of the above Answer: C Diff: 2 Page Ref: 2.4 8 ..
24) Determine the answer to the following equation with correct number of significant figures: (4.123 × 0.12) + 24.2 = ________ A) 25 B) 24.695 C) 24.70 D) 24.7 E) none of the above Answer: D Diff: 2 Page Ref: 2.4 25) Determine the answer to the following equation with correct number of significant figures: (17.103 + 2.03) × 1.02521 = ________ A) 19.6153 B) 19.62 C) 19.6 D) 20 E) none of the above Answer: B Diff: 2 Page Ref: 2.4 26) The correct prefix for the multiplier 1,000,000 is: A) mega. B) milli. C) micro. D) nano. E) none of the above Answer: A Diff: 1 Page Ref: 2.5 27) The correct prefix for the multiplier 1,000 is: A) mega. B) milli. C) micro. D) nano. E) none of the above Answer: E Diff: 1 Page Ref: 2.5 28) The correct prefix for the multiplier 0.1 is: A) tera. B) deci. C) femto. D) pico. E) none of the above Answer: B Diff: 1 Page Ref: 2.5
9 ..
29) The correct prefix for the multiplier 0.000001 is: A) mega. B) milli. C) micro. D) nano. E) none of the above Answer: C Diff: 1 Page Ref: 2.5 30) The correct prefix for the multiplier 1,000,000,000 is: A) mega. B) milli. C) tera. D) giga. E) none of the above Answer: D Diff: 1 Page Ref: 2.5 31) The correct multiplier for the prefix pico is: A) 10-3 B) 10-6 C) 10-9 D) 10-12 E) none of the above Answer: D Diff: 1 Page Ref: 2.5 32) The correct multiplier for the prefix femto is: A) 10-15 B) 10-12 C) 1012 D) 109 E) none of the above Answer: A Diff: 1 Page Ref: 2.5 33) The correct multiplier for the prefix milli is: A) 10-3 B) 10-6 C) 10-9 D) 10-12 E) none of the above Answer: A Diff: 1 Page Ref: 2.5
10 ..
34) The correct multiplier for the prefix micro is: A) 103 B) 10-6 C) 10-9 D) 106 E) none of the above Answer: B Diff: 1 Page Ref: 2.5 35) What is the standard SI unit for length? A) mile B) centimeter C) foot D) meter E) none of the above Answer: D Diff: 1 Page Ref: 2.5 36) What is the standard SI unit for mass? A) kilogram B) gram C) pound D) ton E) none of the above Answer: A Diff: 1 Page Ref: 2.5 37) The standard SI unit for temperature is: A) Fahrenheit. B) Kelvin. C) Celsius. D) atmospheres. E) none of the above. Answer: B Diff: 1 Page Ref: 2.5 38) Which measurement below represents the heaviest mass? A) 1 mg B) 1 kg C) 1 pg D) 1 Mg E) 1 dg Answer: D Diff: 1 Page Ref: 2.5
11 ..
39) Which of the following sets of units is NOT in the order of increasing size? A) μg < g < kg B) mL < dL < L C) ns < ms < s D) cm < μm < km E) μmol < mmol < mol Answer: D Diff: 2 Page Ref: 2.5 40) An American nickel five cent coin has a mass of approximately 5 grams. Five grams is equivalent to which term? A) 5000 kilograms B) 5000 milligrams C) 50 centigrams D) 5000 micrograms E) none of the above Answer: B Diff: 2 Page Ref: 2.5 41) Which of the following would NOT be considered a correct conversion factor? A) 1 dozen eggs = 12 eggs B) 12 eggs = 1 dozen eggs C) 1 pair of shoes = 1 shoe D) 100 pennies = 1 dollar E) 5 cents = 1 nickel Answer: C Diff: 1 Page Ref: 2.5 42) The common English unit in which the speed of an automobile is expressed is miles/hr. What is the set of standard SI units for speed? A) mile/s B) km/hr C) km/s D) m/s E) none of the above Answer: D Diff: 3 Page Ref: 2.5 43) The typical problem-solving procedure involves four steps in the order: A) sort, strategize, solve, check B) strategize, solve, sort, check C) check, strategize, sort, solve D) solve, sort, check, strategize Answer: A Diff: 1 Page Ref: 2.6
12 ..
44) How many inches are in 25.8 cm? A) 0.10 B) 28.3 C) 0.0984 D) 10.2 E) none of the above Answer: D Diff: 2 Page Ref: 2.6 45) How many inches are in 2.80 ft? A) 34 B) 33.6 C) 0.233 D) 4.29 E) none of the above Answer: B Diff: 2 Page Ref: 2.6 46) How many grams are in 1.48 × 107 μg? A) 1.48 × 103 B) 1.48 × 1013 C) 1.48 D) 14.8 E) none of the above Answer: D Diff: 2 Page Ref: 2.6 47) How many milliliters are in 17.5 L? A) 175 B) 1.75 × 10-2 C) 1.75 × 103 D) 1.75 × 104 E) none of the above Answer: D Diff: 2 Page Ref: 2.6 48) How many microliters are in 41.0 mL? A) 4.1 × 103 B) 4.1 × 1010 C) 0.041 D) 4.10 × 104 E) none of the above Answer: D Diff: 2 Page Ref: 2.6
13 ..