EBK BASIC CHEMISTRY
6th Edition
ISBN: 9780134987088
Author: Timberlake
Publisher: PEARSON CO
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Chapter 1.4, Problem 23PP
a. A clinic had 25 patients on Friday morning. 11.21 patients were given flu shots, what percentage of the patients received flu shots? Express your answer to the ones place.
b. An alloy contains 56 g of pure silver and 22 g of pure copper. What is the percentage of silver in the alloy? Express your answer to the ones place.
c. A collection of coins contains 11 nickels, 5 quarters, and 7 dimes. What is the percentage of dimes in the collection? Express your answer to the ones place.
d. A saline solution has a mass of 44 g, of which 2.2 g is sodium chloride. What percent of the solution is sodium chloride? Express your answer to the ones place.
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Bud N. Chemist must determine the density of a mineral sample. His five trials yield densities of 5.15 g/cm3, 4.83 g/cm3, 5.08 g/cm3, 4.97 g/cm3, 5.12 g/cm3. Independent studies found the correct density to be 5.06 g/cm3. Which of the following is incorrect?
a. The mean of his analysis is 5.03 g/cm3 indicating an error of 0.03 g/cm3 from the correct density
B.His data has a standard deviation of 0.017 g/cm3
C.His data has a relative standard deviation of 2.60%
D. He can report his analyzed density as 5.0±0.2 g/cm3 at a 95% confidence level
E. The true value (population mean) is found within the confidence interval of Bud’s work
17
What is the dollar value of a cube of gold measuring 2.00 inches on a side?
Price of gold: $1366 per troy ounce
Density of gold: 19.3 g/cm
31.1 g = 1 troy ounce
2.54 cm = 1 inch
A. $1.11 x 10S
B. $2.41 x 107
C. $2.98 x 104
D. $1.07 x 10%
E. $5.96 x 106
2. Brass is an alloy of copper and zinc. Varying the mass percentages of the two metals
produces brasses with different properties. A brass called yellow zinc has a high ductility
and strength and is 34-37% zinc by mass.
a. Find the mass range (in g) of copper in 185 g of yellow zinc.
b.
What is the mass range (in g) of zinc in a sample of yellow zinc that contains 46.5
g of copper?
Chapter 1 Solutions
EBK BASIC CHEMISTRY
Ch. 1.1 - In every chapter. odd-numbered exercises in the...Ch. 1.1 - In every chapter. odd-numbered exercises in the...Ch. 1.1 - Prob. 3PPCh. 1.1 - Prob. 4PPCh. 1.1 - In every chapter. odd-numbered exercises in the...Ch. 1.1 - Prob. 6PPCh. 1.2 - Identify each activity, a to f, as an observation,...Ch. 1.2 - Identify each activity, a to f. as an observation,...Ch. 1.2 - Identify each of the following as an observation,...Ch. 1.2 - Identify each of the following as an observation,...
Ch. 1.3 - Prob. 11PPCh. 1.3 - What are four things that would make it difficult...Ch. 1.3 - Prob. 13PPCh. 1.3 - Prob. 14PPCh. 1.4 - What is the place value for the bold digit? a....Ch. 1.4 - What is the place value for the bold digit? a....Ch. 1.4 - Prob. 17PPCh. 1.4 - Prob. 18PPCh. 1.4 - Prob. 19PPCh. 1.4 - Prob. 20PPCh. 1.4 - Use the following graph for problems 1.21 and...Ch. 1.4 - Use the following graph for problems 1.21 and...Ch. 1.4 - a. A clinic had 25 patients on Friday morning....Ch. 1.4 - a. At a local hospital. 35 babies were born in...Ch. 1.4 - Prob. 25PPCh. 1.4 - Prob. 26PPCh. 1.5 - Prob. 27PPCh. 1.5 - Write each of the following in scientific...Ch. 1.5 - Prob. 29PPCh. 1.5 - Write each of the following as a standard number:...Ch. 1.5 - Prob. 31PPCh. 1.5 - Prob. 32PPCh. 1.5 - Prob. 33PPCh. 1.5 - Prob. 34PPCh. 1 - The chapter sections to review are shown in...Ch. 1 - Prob. 36UTCCh. 1 - Prob. 37UTCCh. 1 - Prob. 38UTCCh. 1 - Prob. 39UTCCh. 1 - Prob. 40UTCCh. 1 - Prob. 41UTCCh. 1 - Prob. 42UTCCh. 1 - Select the correct phrase(s) to complete the...Ch. 1 - Select the correct phrase(s) to complete the...Ch. 1 - Prob. 45APPCh. 1 - Prob. 46APPCh. 1 - Prob. 47APPCh. 1 - Prob. 48APPCh. 1 - Evaluate each of the following: (1.4)...Ch. 1 - Prob. 50APPCh. 1 - A bag of gumdrops contains 16 orange gumdrops, 8...Ch. 1 - Prob. 52APPCh. 1 - Write each of the following in scientific...Ch. 1 - Write each of the following in scientific...Ch. 1 - Prob. 55APPCh. 1 - Write each of the following as a standard number:...Ch. 1 - Prob. 57APPCh. 1 - Prob. 58APPCh. 1 - Prob. 59CPCh. 1 - Prob. 60CPCh. 1 - Prob. 61CPCh. 1 - The following problems are related to the topics...Ch. 1 - The following problems are related to the topics...Ch. 1 - Prob. 64CP
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