Chemistry: The Central Science (13th Edition)
13th Edition
ISBN: 9780321910417
Author: Theodore E. Brown, H. Eugene LeMay, Bruce E. Bursten, Catherine Murphy, Patrick Woodward, Matthew E. Stoltzfus
Publisher: PEARSON
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Chapter 1.5, Problem 1.2.1PE
Which of the following numbers in your personal life are exact numbers?
- Your cell phone number
- your weight
- your IQ
- your driver's license number
- the distance you walked yesterday
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Write each of the following numbers as “ordinary” decimal numbers.
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report the answer with the same number of significant figures as the measured
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report the answer with the same number of significant figures as the measured
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Chapter 1 Solutions
Chemistry: The Central Science (13th Edition)
Ch. 1.2 - Which of the following is the correct description...Ch. 1.2 - Prob. 1.1.2PECh. 1.5 - Which of the following numbers in your personal...Ch. 1.5 - Practice Exercise 2 The back inside cover of the...Ch. 1.5 - Practice Exercise 1 An object is determined to...Ch. 1.5 - Practice Exercise 2 How many significant figures...Ch. 1.5 - Ellen recently purchased a new hybrid car and...Ch. 1.5 - Practice Exercise 2 It takes 10.5 s for a sprinter...Ch. 1.5 - Prob. 1.5.1PECh. 1.5 - Prob. 1.5.2PE
Ch. 1.6 - Practice Exercise 2 By using a conversion factor...Ch. 1.6 - Practice Exercise 1 Fabiola, who lives in Mexico...Ch. 1.6 - Prob. 1.7.1PECh. 1.6 - Practice Exercise 2 A car travels 28 mi per gallon...Ch. 1.6 - Practice Exercise 2 The surface area of Earth is...Ch. 1.6 - Practice Exercise 1 Composite decking is a...Ch. 1.6 - Prob. 1.9.1PECh. 1.6 - Practice Exercise 2 If the mass of the container...Ch. 1.6 - Practice Exercise 1 Which of the following is the...Ch. 1.6 - Aspirin is composed of 60.0% carbon, 4.5%...Ch. 1.6 - Practice Exercise 1 Which of the following weights...Ch. 1.6 - Practice Exercise 2 How many picometers are there...Ch. 1.6 - Practice Exercise 1 Using Wolfram Alpha...Ch. 1.6 - Practice Exercise 2 Ethylene glycol, the major...Ch. 1.6 - Prob. 1.13.1PECh. 1.6 - Practice Exercise 2 Calculate the density of a...Ch. 1 - The reaction between reactant A (blue spheres) and...Ch. 1 - Prob. 2ECh. 1 - Describe the separation method(s) involved in...Ch. 1 - Prob. 4ECh. 1 - Prob. 5ECh. 1 - Prob. 6ECh. 1 - Prob. 7ECh. 1 - 2447 What are the molecular and empirical formulas...Ch. 1 - When you convert units, how do you decide which...Ch. 1 - Prob. 10ECh. 1 - 2-60 The most common charge associated with...Ch. 1 - Prob. 12ECh. 1 -
2.84 Consider the following organic substances:...Ch. 1 -
2.96 Gallium (Ga) consists of two naturally...Ch. 1 -
2.108 Cyclopropane is an interesting hydrocarbon....Ch. 1 - Write a balanced equation for (a) solid...Ch. 1 - Calculate the molar mass of Ca(NO3)2Ch. 1 - Prob. 18ECh. 1 - Imagine you are working on ways to improve the...Ch. 1 - A key step in balancing chemical equations is...Ch. 1 - a. The characteristic odor of pineapple is due to...Ch. 1 - The complete combustion of octane, Cngs, a...Ch. 1 - Prob. 23ECh. 1 - Prob. 24ECh. 1 -
4.53 Write balanced molecular and net ionic...Ch. 1 - Prob. 26ECh. 1 - Prob. 27ECh. 1 - Prob. 28ECh. 1 -
4.101 Hard water contains Ca2+ , Mg2 + , and Fe2+...Ch. 1 - Prob. 30ECh. 1 - Prob. 31ECh. 1 - Prob. 32ECh. 1 - Imagine that you are climbing a mountain. Is the...Ch. 1 - A gas is confined to a cylinder under constant...Ch. 1 -
5.100 An aluminum can of a soft drink is placed...Ch. 1 - The hydrocarbons acetylene (C2H2) and benzene...Ch. 1 - The precipitation reaction between AgNO3(aq) and...Ch. 1 - Consider the following three moving objects: a...Ch. 1 - The speed of sound in dry air at 20°C is 343 m/s...Ch. 1 - Prob. 40ECh. 1 - Calculate the energy of a photon of...Ch. 1 - Using Heisenberg's uncertainty principle,...Ch. 1 - Prob. 43ECh. 1 - The following do not represent valid ground-state...Ch. 1 - Prob. 45ECh. 1 - Prob. 46ECh. 1 - Arrange the following atoms and ions in order of...Ch. 1 - Prob. 48ECh. 1 - Prob. 49ECh. 1 - The distance from Grand Rapids, Michigan, to...Ch. 1 - Prob. 51ECh. 1 - Prob. 52ECh. 1 - Prob. 53ECh. 1 - Prob. 54ECh. 1 - Prob. 55ECh. 1 - Which of the these molecules has a Lewis structure...Ch. 1 - Prob. 57ECh. 1 - Write the electron configuration for the element...Ch. 1 - (a) Classify each of the following as a pure...Ch. 1 - Prob. 60AECh. 1 - Prob. 61AECh. 1 - Prob. 62AECh. 1 - Prob. 63AECh. 1 - Prob. 64AECh. 1 - Prob. 65AECh. 1 - Prob. 66AECh. 1 - Prob. 67AECh. 1 - Prob. 68AECh. 1 - Ethyl acetate. C4H802, is a fragrant substance...Ch. 1 - Prob. 70AECh. 1 - The iodine bromide molecule, IBr, is an...Ch. 1 - Prob. 72AECh. 1 - Prob. 73AECh. 1 - Prob. 74AECh. 1 - Prob. 75AECh. 1 - Prob. 76AECh. 1 - Prob. 77AECh. 1 -
10.12 The graph below shows the change in...Ch. 1 - Prob. 79AECh. 1 - Prob. 80AECh. 1 - Prob. 81AECh. 1 - Prob. 82AECh. 1 - Prob. 83AECh. 1 - Prob. 84AECh. 1 - Prob. 85AECh. 1 - Prob. 86AECh. 1 - Prob. 87AECh. 1 - Prob. 88AE
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- Indicate whether the number in each of the following statements is anexactor aninexactnumber. a. A classroom contains 63 students. b. The car is traveling at a speed of 56 miles per hour. c. The temperature on the back porch is 3F. d. There are 3 feet in a yard.arrow_forward55. Round the number on the left to the number of significant figures indicated by the example in the first row. (Use scientific notation as needed to avoid ambiguity.) Rounded to Rounded to Rounded to 4 Significant 2 Significant 1 Significant Figures Number Figures Figure 1.45815 1.458 1.5 8.32466 84.57225 132.5512arrow_forwardConsider the following operations on the number 8.83 x 10-². Without using a calculator, decide which would give a significantly smaller value than 8.83 x 10-2, which would give a significantly larger value, or which would give essentially the same value. 8.83 x 10-2 +3.23 x 105 (same 8.83 x 10-2-3.23 x 105 smaller 8.83 x 10 2 x 3.23 x 105 larger v 8.83 x 10-2/3.23 x 105 smallerarrow_forward
- 1-12 The life expectancy of a citizen in the United States is 76 years. Eighty years ago it was 56 years. In your opinion, what was the major contributor to this spectacular increase in life expectancy? Explain your answer.arrow_forwardTo determine the average mass of a popcorn kernel, you collect the following data: Plot the data with number of kernels on the x-axis and mass on the y-axis. Draw the best straight line using the points on the graph (or do a least- squares or linear regression analysis using a computer program), and then write the equation for the resulting straight line. What is the slope of the line? What does the slope of the line signify about the mass of a popcorn kernel? What is the mass of 20 popcorn kernels? How many kernels are there in a handful of popcorn with a mass of 20.88 g?arrow_forwardObservations may be either qualitative or quantitative. Quantitative observations are usually referred to asmeasurements. List five examples ofqualitative observationsyou might make around your home or school. List five examples ofmeasurementsyou might make in everyday life.arrow_forward
- 1.18 Two golfers are practicing shots around a putting green. Each golfer takes 20 shots. Golfer 1 has 7 shots within 1 meter of the hole, and the other 13 shots are scattered around the green. Golfer 2 has 17 shots that go into a small sand trap near the green and 3 just on the green near the trap. Which golfer is more precise? Which is more accurate?arrow_forwardClassify each of the following as aphysicalorchemicalchange or property. Milk curdles if a few drops of lemon juice are added to it. Butter turns rancid if it is left exposed at room temperature. Salad dressing separates into layers after standing. Milk of magnesia neutralizes stomach acid. The steel in a car has rust spots. A person is asphyxiated by breathing carbon monoxide. Sulfuric acid spilled on a laboratory notebook page causes the paper to char and disintegrate. Sweat cools the body as the sweat evaporates from the skin. Aspirin reduces fever. Oil feels slippery. Alcohol hums, forming carbon dioxide and water.arrow_forwardWhich of the following describes a chemical property? The density of iron is 7.87 g/cm3. A platinum wire glows red when heated. An iron bar rusts. Aluminum is a silver-colored metal.arrow_forward
- between significant digits are always significant. figures. Example: 5,007 has 4 significant figures. 3) Trailing zeros in a number are significant only If the number contalns a decimal polnt. Example: 100.0 has 4 significant figures. 100 has 1 significant figure. 4) Zeros in the beginning of a number whose only function Is to place the decimal polnt are not significant. Example: 0.0025 has 2 significant figures. 5) Zeros following a decimal significant figure are significant. Example: 0.000470 has 3 significant figures. 0.47000 has 5 signlficant figures. Determine the number of significant figures in the following numbers. 1. 0.02 6. 5,000. 4. 2. 0.020 2. 7. 6,051.006 3. 501 3 8. 0.0005 1. 4. 501.0 9. 0.1020 5. 5,000 10. 10,001 5 Determine the location of the last significant place value by placing a bar over the digit. Example: 1.700) 9,010.0 4.7x10-8 10,8 00,000 3.0Tx 1021 0.00410 1. 8040 6. 90,100 0.0300 699.5 2,000X162 0.90100 2. 0.0300 7. 4.7 x 108 3. 699.5 8. 10,800,000. 3.…arrow_forwardWhich of the following statements is FALSE ? After rounding to three significant digits, 0.088765 will become 0.0888 O 1.080 has three significant digits After rounding to two significant digits, 2371 will become 2400 0.0035 has two significant digitsarrow_forwardMacmillar Four marbles have the same volume but are made of different metals. The density of each metal is given in the table. Density (g/mL) Metal aluminum palladium rhenium copper Place the marbles in order from heaviest to lightest. 2.70 12.0 20.8 8.96arrow_forward
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