Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN: 9781305960060
Author: Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 1.72E
Do the following calculations and use the correct number of significant figures in your answers. Assume all numbers are the results of measurements.
a.
b.
c.
d.
(HINT: Write in decimal form first, then add.)
e.
f.
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2. Do the following calculations and use the correct number of significant figures in your answers. Assume all numbers are the results of measurements.
a. 0.208 + 4.9 + 1.11
b. 228 + 0.999 + 1.02
c. 8.543 − 7.954
d.(3.2 × 10−2) + (5.5 × 10−1) (hint: Write in the decimal form first, then add.)
e. 336.86 − 309.11
f. 21.66 − 0.02387
I think I did a calculation wrong but I am having trouble understanding significant figures.
In this problem, I am calculation the density of water from my previous calculations mass= 7.359g and volume=7.8mL. So I then divided 7.359g by 7.8mL to find density and got (.9434615385) on my calculator which I then turned into (.94) because I believe there should be 2 significant figures. Is (.94) correct or should 1.4 be the final answer?
part A: Sort the following numbers according to whether they should be rounded up or down when rounding to the nearest tenth (the first digit after the decimal).
3.1760, 4.319, 19.47, 5.82, 66.9214, 8878.2010, 7.084, 124.76
part B: Drag the answers that have been correctly rounded to the appropriate number of significant figures to their place in the table. To avoid rounding errors, start with the unrounded value before conducting each manipulation.
Drag the appropriate labels to their respective targets.
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14.93
Group 3 14.93
12
Group 1 12
14.92
Group 3 14.92
3.62
Group 4 3.62
14
Group 3 14
3.7
Group 4 3.7
15
Group 3 15
3.6
Group 4 3.6
15.0
Group 3 15.0
3.63
Group 4 3.63
14.9
Group 3 14.9
3.623
Group 4 3.623
12.47
Group 1 12.47
7.97
Group 2 7.97
12.46
Group 1 12.46
7.966
Group 2 7.966
12.4
Group 1 12.4
7.0
Group 2 7.0
13
Group 1 13
7.96
Group 2 7.96
12.5
Group 1 12.5
8.0
Group 2 8.0
3.622
Group 1…
Chapter 1 Solutions
Chemistry for Today: General, Organic, and Biochemistry
Ch. 1 - A heavy steel ball is suspended by a thin wire....Ch. 1 - Explain how the following are related to each...Ch. 1 - Tell how you would try to prove to a doubter that...Ch. 1 - Prob. 1.4ECh. 1 - The attractive force of gravity for objetcs near...Ch. 1 - Earths rotation causes it to bulge at the equator....Ch. 1 - Classify each of the following as a physical or...Ch. 1 - Classify each of the following as a physical or...Ch. 1 - Classify each of the following properties as...Ch. 1 - Classify each of the following properties as...
Ch. 1 - A sample of liquid alcohol is frozen to a solid,...Ch. 1 - Succinic acid, a white solid that melts at 182C,...Ch. 1 - A sample of solid elemental phosphorus that is...Ch. 1 - Oxygen gas and solid carbon are both made up of...Ch. 1 - Under appropriate conditions, hydrogen peroxide...Ch. 1 - Water can be decomposed to hydrogen gas and oxygen...Ch. 1 - Methane gas, a component of natural gas, is burned...Ch. 1 - Classify each pure substance represented below by...Ch. 1 - Classify each pure substance represented below by...Ch. 1 - Consider the following experiments, and answer the...Ch. 1 - Early scientists incorrectly classified calcium...Ch. 1 - Classify each of the following as homogeneous or...Ch. 1 - Classify each of the following as homogeneous or...Ch. 1 - Classify as pure substance or solution each of the...Ch. 1 - Classify as pure substance or solution each of the...Ch. 1 - Prob. 1.26ECh. 1 - In the distant past, 1in. was defined as the...Ch. 1 - Prob. 1.28ECh. 1 - Which of the following quantities are expressed in...Ch. 1 - Which of the following quantities are expressed in...Ch. 1 - Prob. 1.31ECh. 1 - Prob. 1.32ECh. 1 - Referring only to Table 1.2, answer the following...Ch. 1 - Referring only to Table 1.2, answer the following...Ch. 1 - One inch is approximately equal to 2.54cm. Express...Ch. 1 - Cookbooks are going metric. In such books, 1 cup...Ch. 1 - Two cities in Germany are located 25km apart. What...Ch. 1 - The shotput used by female track and field...Ch. 1 - Referring to Table 1.3, answer the following...Ch. 1 - Prob. 1.40ECh. 1 - Prob. 1.41ECh. 1 - Using appropriate values from Table 1.3, answer...Ch. 1 - Prob. 1.43ECh. 1 - Prob. 1.44ECh. 1 - Prob. 1.45ECh. 1 - Which of the following numbers are written using...Ch. 1 - Which of the following numbers are written using...Ch. 1 - Write each of the following numbers using...Ch. 1 - Write each of the following numbers using...Ch. 1 - Prob. 1.50ECh. 1 - A sheet of paper is 0.0106cm, or 0.0042in., thick....Ch. 1 - Prob. 1.52ECh. 1 - Prob. 1.53ECh. 1 - Do the following multiplications, and express each...Ch. 1 - Prob. 1.55ECh. 1 - Prob. 1.56ECh. 1 - Express each of the following numbers using...Ch. 1 - Prob. 1.58ECh. 1 - Prob. 1.59ECh. 1 - Prob. 1.60ECh. 1 - Prob. 1.61ECh. 1 - Indicate to what decimal position readings should...Ch. 1 - Indicate to what decimal position readings should...Ch. 1 - Write the following measured quantities as you...Ch. 1 - Prob. 1.66ECh. 1 - Prob. 1.67ECh. 1 - Determine the number of significant figures in...Ch. 1 - Prob. 1.69ECh. 1 - Do the following calculations and use the correct...Ch. 1 - Prob. 1.71ECh. 1 - Do the following calculations and use the correct...Ch. 1 - Prob. 1.73ECh. 1 - Do the following calculations and use the correct...Ch. 1 - Do the following calculations and use the correct...Ch. 1 - Prob. 1.76ECh. 1 - Determine a single factor derived from Table 1.3...Ch. 1 - Prob. 1.78ECh. 1 - Prob. 1.79ECh. 1 - Prob. 1.80ECh. 1 - Prob. 1.81ECh. 1 - A metric cookbook calls for 250mL of milk. Your...Ch. 1 - Prob. 1.83ECh. 1 - You have a 40-lb baggage limit for a transatlantic...Ch. 1 - You need 3.00lb of meat that sells for 3.41/lb...Ch. 1 - During a glucose tolerance test, the serum glucose...Ch. 1 - Prob. 1.87ECh. 1 - Prob. 1.88ECh. 1 - Prob. 1.89ECh. 1 - Prob. 1.90ECh. 1 - Prob. 1.91ECh. 1 - Immunoglobulin antibodies occur in five forms. A...Ch. 1 - Calculate the density of the following materials...Ch. 1 - Calculate the density of the following materials...Ch. 1 - Calculate the volume and density of a rectangular...Ch. 1 - Calculate the volume and density of a cube of lead...Ch. 1 - The volume of an irregularly shaped solid can be...Ch. 1 - The density of ether is 0.736g/mL. What is the...Ch. 1 - Calculate the mass in grams of 100.0mL of...Ch. 1 - Do the following metric system conversions by...Ch. 1 - A single water molecule has a mass of 2.991023g....Ch. 1 - Prob. 1.102ECh. 1 - Cooking oil has a density of 0.812g/mL. What is...Ch. 1 - Prob. 1.104ECh. 1 - At 4.0C, pure water has a density of 1.00g/mL. At...Ch. 1 - The following pairs of substances represent...Ch. 1 - Explain why a bathroom mirror becomes foggy when...Ch. 1 - Prob. 1.108ECh. 1 - Liquid mercury metal freezes to a solid at a...Ch. 1 - Prob. 1.110ECh. 1 - Show how the factor-unit method can be used to...Ch. 1 - Prob. 1.112ECh. 1 - Refer to Chemistry Around Us 1.2 and explain what...Ch. 1 - Prob. 1.114ECh. 1 - Which of the following properties is considered a...Ch. 1 - Which of the following properties depicts a...Ch. 1 - Which of the following is a mixture? a.sodium...Ch. 1 - Prob. 1.118ECh. 1 - Prob. 1.119ECh. 1 - The correct formula for converting Fahrenheit to...Ch. 1 - Prob. 1.121ECh. 1 - Prob. 1.122ECh. 1 - Prob. 1.123ECh. 1 - How many millimeters are there in one centimeter?...Ch. 1 - Convert 4.50102nm into pm. a.4.50102pm b.4.50102pm...Ch. 1 - Prob. 1.126ECh. 1 - Convert 4.50102nm into m. a.4.50102m b.4.501011m...Ch. 1 - The quantity 6185meters can be rewritten as: a....Ch. 1 - The number 1,000,000 is what power of 10? a. 106...Ch. 1 - What exponent or power of ten would you use to...Ch. 1 - Express 0.0562 in exponential notation. a....Ch. 1 - Write the correct answer correct number of...Ch. 1 - Prob. 1.133ECh. 1 - The percentage of oxygen by weight in Al2(SO4)3...Ch. 1 - Prob. 1.135ECh. 1 - The density of gold (Au) is 19.3g/cm3 and that of...
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