Problem 1PE: Practice Exercise 1.1
What is the process of the scientific method? (Hint: Use Figure 1.2).
Problem 2PE: Practice Exercise 1.2
Classify the following as an element, compound, or mixture. If it is a... Problem 3PE: Practice Exercise 1.3
Each of the following can be classified as a physical or chemical change.... Problem 4PE: Practice Exercise 1.4
Each of these properties can be classified as intensive or extensive. Identify... Problem 5PE Problem 6PE Problem 7PE: What is 355CinF? (Hint: What tool relates these two temperature scales?) Problem 8PE: Convert 55F to its Celsius temperature. What Kelvin temperature corresponds to 68F (expressed to the... Problem 9PE Problem 10PE: Perform the following calculations involving measurements and round the results so that they are... Problem 11PE: Practice Exercise 1.11
Use dimensional analysis to convert an area of 124 square feet to square... Problem 12PE: Use dimensional analysis to perform the following conversions: (a) 3.00yd3toinches3, (b) 1.25 km to... Problem 13PE: A 15.0 mL sample of polystyrene used in insulated foam cups weighs 0.244 g. What is the density of... Problem 14PE: Practice Exercise 1.14
A crystal of salt was grown and found to have a mass of 0.547 g. When the... Problem 15PE: A gold-colored metal object has a mass of 365 g and a volume of 22.12cm3. Is the object composed of... Problem 16PE: Practice Exercise 1.16
A certain metal alloy has a density of . How many pounds would of this alloy... Problem 17PE: Practice Exercise 1.17
Table wines have a minimum specific gravity of 1.090. If a barrel of wine... Problem 18PE: Practice Exercise 1.18
Diabetes can cause a decrease in the specific gravity of urine. If normal... Problem 1RQ: After some thought, give two reasons why a course in chemistry will benefit you in the pursuit of... Problem 2RQ: What steps are involved in the scientific method? Problem 3RQ Problem 4RQ: Can a theory be proved to be correct? Can a theory be proved to be wrong? Problem 5RQ: 1.5 Define matter. Which are examples of matter? (a) air, (b) an idea, (c) a bowl of soup, (d) a... Problem 6RQ: Define (a) element, (b) compound, (c) mixture, (d) homogeneous, (e) heterogeneous, (f) phase, (g)... Problem 7RQ: 1.7 Which kind of change, chemical or physical, is needed change a compound into its elements?
Problem 8RQ Problem 9RQ: 1.9 What is the name of each of the following elements?
(a) Na, (b) Zn, (c) Si, (d) Sn, (e) Mg, (f)... Problem 10RQ: For each of the following molecular pictures, state whether it represents a pure substance or a... Problem 11RQ: 1.11 Consider the following four samples of matter.
(a) Which sample(s) consist of only one... Problem 12RQ: 1.12 What is a physical change? What is a chemical change? What is the chief distinction between... Problem 13RQ: 1.13 “A sample of calcium (an electrically conducting white metal that is shiny, relatively soft,... Problem 14RQ: 1.14 In places like Saudi Arabia, freshwater is scarce and is recovered from seawater. When seawater... Problem 15RQ: How does a chemical property differ from a physical property? Problem 16RQ: Distinguish between an extensive and an intensive property. Problem 17RQ: Determine whether each of the following is an intensive or extensive property, and justify your... Problem 18RQ: Describe one or more physical properties of each state of matter that distinguishes it from the... Problem 19RQ: Why must measurements always be written with a unit? Problem 20RQ: What is the only SI base unit that includes a prefix? Problem 21RQ: Which SI units are mainly used in chemistry? Problem 22RQ: What are derived units? Give two examples of derived units. Problem 23RQ: What is the meaning of each of the following prefixes? What abbreviation is used for each prefix?... Problem 24RQ: What reference points do we use in calibrating the scale of a thermometer? What temperature on the... Problem 25RQ: In each pair, which is larger: (a) A Fahrenheit degree or a Celsius degree? (b) A Celsius degree or... Problem 26RQ: 1.26 Define the term significant figures.
Problem 27RQ: Explain how to round numbers. Problem 28RQ: What is the difference between accuracy and precision? Problem 29RQ: 1.29 Suppose a length had been reported to be 31.24 cm. What is the minimum uncertainty implied in... Problem 30RQ: What is the difference between the treatment of significant figures in addition and multiplication? Problem 31RQ: When constructing a conversion factor between two units, which unit becomes the numerator and which... Problem 32RQ: Suppose someone suggested using the fraction 3 yd/1 ft as a conversion factor to change a length... Problem 33RQ: In 1 hour there are 3600 seconds. By what conversion factor would you multiply 250 seconds to... Problem 34RQ: If you were to convert the measured length 4.165 ft to yards by multiplying by the conversion factor... Problem 35RQ: 1.35 Write the equation that defines density. Identify the symbols in the equation.
Problem 36RQ: Compare density and specific gravity. What is the difference between the two? When would specific... Problem 37RQ: 1.37 Give four sets of units for density. What mathematical operation must be carried out to convert... Problem 38RQ: 1.38 Silver has a density of . Express this as an equivalence between mass and volume for silver.... Problem 39RQ: Determine whether each of the following is a physical or chemical change, and explain your... Problem 40RQ: 1.40 Determine whether each of the following is a physical or chemical change, and explain your... Problem 41RQ: At room temperature, what is the state of each of the following? If necessary, look up the... Problem 42RQ: At room temperature, determine the appropriate phase for each of the following substances. (Look up... Problem 43RQ: What number should replace the question mark in each of the following? (a) l cm = ? m (b) 1 km = ? m... Problem 44RQ: 1.44 What numbers should replace the question marks below?
Problem 45RQ: Perform the following conversions. (a) 57CtoF (b) -25.5FtoC (c) 378KtoC (d) -31CtoK Problem 46RQ: Perform the following conversions. (a) 98FtoC (b) 55CtoF (c) 299KtoC (d) 40.0CtoK Problem 47RQ: The temperature of the core of the sun is estimated to be about 15.7 million K. What is this... Problem 48RQ: Natural gas is mostly methane, a substance that boils at a temperature of 109 K. What is its boiling... Problem 49RQ: A healthy dog has a temperature ranging from 37.8Cto39.2C. Is a dog with a temperature of 103.5F... Problem 50RQ Problem 51RQ: The length of a wire was measured using two different rulers. What are the lengths of the wire and... Problem 52RQ: What are the temperatures being measured in the two thermometers, and how many significant figures... Problem 53RQ: 1.53 How many significant figures do the following measured quantities have?
(a) 37.53 cm
(b) 37.240... Problem 54RQ: How many significant figures do the following measured quantities have? (a) 0.0230 g (b) 105.303 m... Problem 55RQ: 1.55 Perform the following arithmetic and round off the answers to the correct number of significant... Problem 56RQ: 1.56 Perform the following arithmetic and round off the answers to the correct number of significant... Problem 57RQ: Which are exact numbers and which ones have a finite number of significant figures? (a) the volume... Problem 58RQ Problem 59RQ: 1.59 Perform the following conversions.
Problem 60RQ: 1.60 Perform the following conversions.
Problem 61RQ: 1.61 Perform the following conversions. If necessary, refer to Tables 1.3 and 1.4. (a) 36 in. to cm... Problem 62RQ: 1.62 Perform the following conversions. If necessary, refer to Tables 1.3 and 1.4. (a)250 mL to qt... Problem 63RQ: 1.63 Perform the following conversions. (a)8.4ft2tocm2(c)231ft3tocm3(b)223mi2tokm2 Problem 64RQ Problem 65RQ: The human stomach can expand to hold up to 4.2 quarts of food. A pistachio nut has a volume of about... Problem 66RQ: In the movie Cool Hand Luke (1967), Luke wagers that he can eat 50 eggs in one hour. The prisoners... Problem 67RQ: 1.67 The winds in a hurricane can reach almost 200 miles per hour. What is this speed in meters per... Problem 68RQ: 1.68 A bullet is fired at a speed of 2435 ft/s. What is this speed expressed in kilometers per hour? Problem 69RQ: 1.69 A bullet leaving the muzzle of a pistol was traveling at a speed of 2230 feet per second. What... Problem 70RQ: 1.70 On average, water flows over Niagara Falls at a rate of 2.05105 cubic feet per second. One... Problem 71RQ Problem 72RQ: *1.72 One degree of latitude on the earth’s surface equals 60.0 nautical miles. One nautical mile... Problem 73RQ: Calculate the density of kerosene, in g/mL, if its mass is 36.4 g and its volume is 45.6 mL. Problem 74RQ: Calculate the density of magnesium, in g/cm3, if its mass is 14.3 g and its volume is 8.46cm3. Problem 75RQ: Acetone, the solvent in some nail polish removers, has a density of 0.791 g/mL. What is the volume,... Problem 76RQ: A glass apparatus contains 26.223 g of water when filled at 25C. At this temperature, water has a... Problem 77RQ: 1.77 Chloroform, a chemical once used as an anesthetic, has a density of 1.492 g/mL. What is the... Problem 78RQ: Gasolines density is about 0.65 g/mL. How much does 34 L (approximately 18 gallons) weigh in... Problem 79RQ Problem 80RQ Problem 81RQ: The space shuttle uses liquid hydrogen as its fuel. The external fuel tank used during takeoff... Problem 82RQ Problem 83RQ: 1.83 Some time ago, a U.S. citizen traveling in Canada observed that the price of regular gasoline... Problem 84RQ: Driving to work one day, one of the authors of this book had a gas mileage of 28.5 km/L. Another... Problem 85RQ Problem 86RQ Problem 87RQ Problem 88RQ: A pycnometer is a glass apparatus used for accurately determining the density of a liquid. When dry... Problem 89RQ: 1.89 Radio waves travel at the speed of light, . If you were to broadcast a question to the Mars... Problem 90RQ Problem 91RQ Problem 92RQ: Aerogel or solid smoke" is a novel material that is made of silicon dioxide, like glass, but is a... Problem 93RQ: A liquid known to be either ethanol (ethyl alcohol) or methanol (methyl alcohol) was found to have a... Problem 94RQ: An unknown liquid was found to have a density of 69.22lb/ft3. The density of ethylene glycol (the... Problem 95RQ: 1.95 There exists a single temperature at which the value reported in is numerically the same as... Problem 96RQ: In the text, the Kelvin scale of temperature is defined as an absolute scale in which one Kelvin... Problem 97RQ: Density measurements can be used to analyze mixtures. For example, the density of solid sand... Problem 98RQ: An artist's statue has a surface area of 14.6ft2. The artist plans to apply gold leaf to the statue... Problem 99RQ: What is the volume in cubic millimeters of a 3.54 carat diamond, given that the density of diamond... Problem 100RQ: 1.100 A solution is defined as a uniform mixture consisting of a single phase. With our vastly... Problem 101RQ: How do you know that Coca-Cola is not a compound? What experiments could you perform to prove it?... Problem 102RQ: Find two or more web sites that give the values for each of the seven base SI units. Keeping in mind... Problem 103RQ: 1.103 Reference books such as the Handbook of Chemistry and Physics report the specific gravities of... Problem 104RQ: A student used a 250 mL graduated cylinder having volume markings every 2 mL to carefully measure... Problem 105RQ Problem 106RQ: Gold has a density of 19.31gcm-3. How many grams of gold are required to provide a gold coating... Problem 107RQ: A Boeing 747 jet airliner carrying 568 people burns about 5.0 gallons of jet fuel per mile. What is... Problem 108RQ: *1.108 Download a table of data for the density of water between its freezing and boiling points.... Problem 109RQ: List the physical and chemical properties mentioned in this chapter. What additional physical and... Problem 110RQ format_list_bulleted
Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning