Chemistry for Engineering Students
4th Edition
ISBN: 9781337398909
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
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Chapter 1, Problem 1.35PAE
1.35 How was the Fahrenheit temperature scale calibrated? Describe how this calibration process reflects the measurement errors that were evident when the temperature scale was devised.
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A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl alcohol to be 74.1 ºC. Then, she looks in a reference book and finds that the actual boiling point of ethyl alcohol is 78.4 ºC. What is her percent error?Record only your final answer with the correct number of significant digits and the proper units.
A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl alcohol to be 71.1 ºC. Then, she looks in a reference book and finds that the actual boiling point of ethyl alcohol is 78.4 ºC. What is her percent error?Do not show your work in the space provided.Record only your final answer with the correct number of significant digits and the proper units.
I don't understand the wording. The least significant digit means the last digit?
7.700 X 2.1 = 16.17 would the uncertainty be 0.01 ?
2.132 + 17 + 4.04 = 23.172 would the uncertainty be 0.001 ?
Chapter 1 Solutions
Chemistry for Engineering Students
Ch. 1 - Prob. 1COCh. 1 - Prob. 2COCh. 1 - Draw pictures to illustrate simple chemical...Ch. 1 - Explain the difference between inductive and...Ch. 1 - Use appropriate techniques to convert measurements...Ch. 1 - Express the results of calculations using the...Ch. 1 - What are the components involved?Ch. 1 - How do those components interact or connect to...Ch. 1 - What is the ultimate function of the whole system?Ch. 1 - Prob. 1.1PAE
Ch. 1 - In what country is most of the world’s cobalt...Ch. 1 - In what types of technology do the elements...Ch. 1 - Based on the information in Figure 1.1, which...Ch. 1 - Prob. 1.5PAECh. 1 - Prob. 1.6PAECh. 1 - When we make observations in the laboratory, which...Ch. 1 - Which of the following items are matter and which...Ch. 1 - Which macroscopic characteristics differentiate...Ch. 1 - 1.10 Do the terms element and atom mean the same...Ch. 1 - 1.11 Label each of the following as either a...Ch. 1 - 1.12 Why do physical properties play a role in...Ch. 1 - 1.13 Physical properties may change because of a...Ch. 1 - 1.14 Which part of the following descriptions of a...Ch. 1 - 1.15 We used the example of attendance at a...Ch. 1 - 1.16 Complete the following statement: Data that...Ch. 1 - 1.17 Complete the following statement: Data that...Ch. 1 - 1.18 Two golfers are practicing shots around a...Ch. 1 - Prob. 1.19PAECh. 1 - 1.20 Suppose that you are waiting at a corner for...Ch. 1 - 1.21 When a scientist looks at an experiment and...Ch. 1 - 1.22 What is the difference between a hypothesis...Ch. 1 - 1.23 Should the words theory and model be used...Ch. 1 - 1.24 What is a law of nature? Are all scientific...Ch. 1 - 1.25 Describe a miscommunication that can arise...Ch. 1 - 1.26 What is the difference between a qualitative...Ch. 1 - 1.27 Identify which of the following units are...Ch. 1 - 1.28 What is a “derived” unit?Ch. 1 - 1.29 Rank the following prefixes in order of...Ch. 1 - 1.30 The largest computers now include disk...Ch. 1 - Prob. 1.31PAECh. 1 - 1.32 Use the web to determine how the Btu was...Ch. 1 - 1.33 How many micrograms are equal to one gram?Ch. 1 - 1.34 Convert the value 0.120 ppb into ppm.Ch. 1 - 1.35 How was the Fahrenheit temperature scale...Ch. 1 - Superconductors are materials that have no...Ch. 1 - 1.37 Express each of the following temperatures in...Ch. 1 - 1.38 Express (a) 275 oC in K, (b) 25.55 K in oC,...Ch. 1 - 1.39 Express each of the following numbers in...Ch. 1 - 1.40 How many significant figures are there in...Ch. 1 - 1.41 How many significant figures are present in...Ch. 1 - Perform these calculations and express the result...Ch. 1 - 1.43 Calculate the following to the correct number...Ch. 1 - 1.44 In an attempt to determine the velocity of a...Ch. 1 - 1.45 A student finds that the mass of an object is...Ch. 1 - 1.46 Measurements indicate that 23.6% of the...Ch. 1 - 1.47 A student weighs 10 quarters and finds that...Ch. 1 - 1.48 A rock is placed on a balance and its mass is...Ch. 1 - 1.49 A package of eight apples has a mass of 1.00...Ch. 1 - Prob. 1.50PAECh. 1 - 1.51 A person measures 173 cm in height. What is...Ch. 1 - 1.52 The distance between two atoms in a molecule...Ch. 1 - 1.53 Carry out the following unit conversions. (a)...Ch. 1 - 1.54 Carry out each of the following conversions....Ch. 1 - 1.55 Convert 22.3 mL to (a) liters, (b) cubic...Ch. 1 - 1.56 If a vehicle is travelling 92 m/s, what is...Ch. 1 - 1.57 A load of asphalt weights 245 lb. and...Ch. 1 - 1.58 One square mile contains exactly 640 acres....Ch. 1 - 1.59 A sample of crude oil has a density of 0.87...Ch. 1 - 1.60 Mercury has a density of 13.6 g/mL. What is...Ch. 1 - 1.61 The area of the 48 contiguous states is...Ch. 1 - 1.62 The dimensions of aluminium foil in a box for...Ch. 1 - Prob. 1.63PAECh. 1 - 1.64 Wire is often sold in pound spools according...Ch. 1 - 1.65 An industrial engineer is designing a process...Ch. 1 - 1.66 An engineer is working with archaeologists to...Ch. 1 - 1.67 On average, Earth’s crust contains about 8.1...Ch. 1 - Prob. 1.68PAECh. 1 - 1.69 The “Western Stone” in Jerusalem is one of...Ch. 1 - A load of bauxite has a density of 3.15 g/cm3. If...Ch. 1 - 1.71 Is touch screen technology better described...Ch. 1 - Prob. 1.72PAECh. 1 - 1.73 Why are two separate ITO layers required in a...Ch. 1 - 1.74 What are the two properties of ITO that make...Ch. 1 - 1.75 What does it mean that ITO films are made by...Ch. 1 - 1.76 How does Gorilla Glass differ from more...Ch. 1 - 1.77 How can a liquid be distinguished from a fine...Ch. 1 - 1.78 Some farmers use ammonia, NH3, as a...Ch. 1 - 1.79 Use a molecular-level description to explain...Ch. 1 - 1.80 All molecules attract each other to some...Ch. 1 - 1.81 Draw a molecular-scale picture to show how a...Ch. 1 - 1.82 Which of the following molecular-scale...Ch. 1 - 1.83 What type of transition is represented in the...Ch. 1 - 1.84 A student was given two metal cubes that...Ch. 1 - 1.85 Battery acid has a density of 1.285 g/mL and...Ch. 1 - 1.86 Unfermented grape juice used to make wine is...Ch. 1 - 1.87 A solution of ethanol in water has a volume...Ch. 1 - 1.88 Legend has it that Archimedes, a famous...Ch. 1 - 1.89 Imagine that you place a cork measuring...Ch. 1 - 1.90 A calibrated flask was filled to the 25.00-mL...
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