Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter L, Problem 22PS
The accepted value of the melting point of pureaspirin is 135 °C. Trying to verify that value, you obtain 134 °C, 136°C133 °C, and 138 °C infour separate trials. Your partner finds 138 °C,137 °C, 138 °C, and 138 °C.
- (a) Calculate the average value and percent error for your data and your partner's data.
- (b) Which of you is more precise? More accurate?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The pharmacist attempts to weigh 0.375 g o morphine sulfate on a balance of dubious accuracy. When checked on a highly accurate balance, the weight is found to be 0.400 g. Calculate the percentage of error in the first weighing.
A manufacturer of paint claims that a gallon (3.78 L) of latex paint can cover 365 ft2 of the surface of a wall in a single coating. The paint manufacturer also claims that one single coating of an entire wall will be 3.40 mm thick.
Is this a case of false advertising? Yes or No? Elaborate your answer by providing a calculation (handwritten, upload a pdf).
You may use the following conversions: 12 in = 1 ft, 2.54 cm = 1 in
A group of students took turns using a laboratory balanceto weigh the water contained in a beaker. The results theyreported were 111.42 g, 111.67 g, 111.21 g, 135.64 g,111.02 g, 111.29 g, and 111.42 g.(a) Should any of the data be excluded before the average is calculated?(b) From the remaining measurements, calculate the average value of the mass of the water in the beaker.(c) Calculate the standard deviation s and, from it, the 95% confidence limit.
Chapter L Solutions
Chemistry & Chemical Reactivity
Ch. L.1 - The distance between two carbon atoms in diamond...Ch. L.1 - Prob. 1RCCh. L.1 - Prob. 2RCCh. L.1 - Prob. 3RCCh. L.1 - Prob. 4RCCh. L.1 - 5. A circulated U.S. quarter has a mass of 5.59 g....Ch. L.1 - Prob. 6RCCh. L.1 - Prob. 7RCCh. L.2 - Two students measured the freezing point of a...Ch. L.2 - Prob. 1RC
Ch. L.2 - Two students were assigned to determine the mass...Ch. L.3 - Prob. 1CYUCh. L.3 - Prob. 1RCCh. L.3 - Prob. 2RCCh. L.3 - 3. What is the sum of 10.26 g and 0.063 g?
10.323...Ch. L.3 - Prob. 4RCCh. L.4 - The density of gold is 19,320 kg/m3. What is this...Ch. L.4 - 1. A lake has an area of 2.33 × 107 m2. What is...Ch. L.5 - What is the fuel density in units of kg/L?Ch. L.5 - What mass and what volume of fuel should have been...Ch. L.6 - A particular paint has a density of 0.914 g/cm3....Ch. L.6 - Prob. 1RCCh. L - Many laboratories use 25C as a standard...Ch. L - The temperature on the surface of the Sun is 5.5 ...Ch. L - Prob. 3PSCh. L - Make the following temperature conversions:Ch. L - A marathon distance race covers distance of 42.195...Ch. L - The average lead pencil, new and unused, is 19 cm...Ch. L - A standard U.S. postage stamp is 2.5 cm long and...Ch. L - A compact disc has a diameter of 11.8 cm. What is...Ch. L - A typical laboratory beaker has a volume of 250....Ch. L - Some soft drinks are sold in bottles with a volume...Ch. L - A book has a mass of 2.52 kg. What is this mass in...Ch. L - A new U.S. dime has a mass of 2.265 g. What is its...Ch. L - Ethylene glycol, C2H6O2, is an ingredient of...Ch. L - A piece of silver metal has a mass of 2.365 g. If...Ch. L - Prob. 15PSCh. L - Which occupies a larger volume, 600 g of water...Ch. L - You are on a diet that calls for eating no more...Ch. L - A 2-in. piece of chocolate cake with frosting...Ch. L - Prob. 19PSCh. L - Prob. 20PSCh. L - You and your lab partner are asked to determine...Ch. L - The accepted value of the melting point of...Ch. L - Prob. 23PSCh. L - Prob. 24PSCh. L - Prob. 25PSCh. L - Prob. 26PSCh. L - To determine the average mass of a popcorn kernel,...Ch. L - Use the following graph to answer the following...Ch. L - Use the graph below to answer the following...Ch. L - Solve the following equation for the unknown...Ch. L - Solve the following equation for the unknown...Ch. L - Solve the following equation for the unknown...Ch. L - Prob. 34PSCh. L - Molecular distances are usually given in...Ch. L - The separation between carbon atoms in diamond is...Ch. L - A red blood cell has a diameter of 7.5 m...Ch. L - The platinum-containing cancer drug cisplatin...Ch. L - Prob. 39GQCh. L - You need a cube of aluminum with a mass of 7.6 g....Ch. L - You have a 250.0-mL graduated cylinder containing...Ch. L - Prob. 42GQCh. L - The smallest repeating unit of a crystal of common...Ch. L - Diamond has a density of 3.513 g/cm3. The mass of...Ch. L - Prob. 45GQCh. L - The density of pure water at various temperatures...Ch. L - Prob. 47GQCh. L - The aluminum in a package containing 75 ft2 of...Ch. L - Fluoridation of city water supplies has been...Ch. L - About two centuries ago, Benjamin Franklin showed...Ch. L - Prob. 51GQCh. L - A 26-meter-tall statue of Buddha in Tibet is...Ch. L - At 25 C, the density of water is 0.997 g/cm3,...Ch. L - Suppose your bedroom is 18 ft long and 15 ft wide,...Ch. L - A spherical steel ball has a mass of 3.475 g and a...Ch. L - You are asked to identify an unknown liquid that...Ch. L - You have an irregularly shaped piece of an unknown...Ch. L - There are five hydrocarbon compounds (compounds of...Ch. L - Suppose you have a cylindrical glass tube with a...Ch. L - Copper: Copper has a density of 8.96 g/cm3 An...Ch. L - Copper: (a) Suppose you have a cube of copper...Ch. L - A sample of unknown metal is placed in a graduated...Ch. L - Iron pyrite is often called fool's gold because it...Ch. L - You can analyze for a copper compound in water...Ch. L - Prob. 67IL
Additional Science Textbook Solutions
Find more solutions based on key concepts
The structural formula of 1, 2-dimethylbenzene needs to be drawn. Concept introduction: The ring structures of ...
Chemistry: Matter and Change
2. Why shouldn’t you work in a laboratory by yourself?
The Organic Chem Lab Survival Manual: A Student's Guide to Techniques
The method to determine the volume of a powered solid, liquid and a rock needs to be determined. Concept introd...
Living by Chemistry
22.102 Write the structures of the cis and tram isomers, if any, for the following compounds:
Chemistry: The Molecular Nature of Matter
141. Design a device that uses as electrochemical cell to determine amount of
in a sample water Describe, in...
Chemistry: Structure and Properties (2nd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- The label on a bale of mulch indicates a volume of 1.45 ft3. The label also states that the mulch in the bale will cover an area of a garden 6 ft 6 ft to a depth of 1 in. Account for the discrepancy in the given volumes.arrow_forwardYou are assigned the task of separating a desired granular materialwith a density of 3.62 g/cm3 from an undesired granularmaterial that has a density of 2.04 g/cm3. You want to dothis by shaking the mixture in a liquid in which the heaviermaterial will fall to the bottom and the lighter material willfloat. A solid will float on any liquid that is more dense. Usingan Internet-based source or a handbook of chemistry, findthe densities of the following substances: carbon tetrachloride,hexane, benzene, and diiodomethane. Which of theseliquids will serve your purpose, assuming no chemical interactiontakes place between the liquid and the solids?arrow_forwardA pharmacist was tasked to prepare 10 paper tabs from a 20 mg tablet for neonatal patient X. However, the pharmacist found out that there was a discrepancy of 0.29 mg from the original weight after the preparation. The recorded weighing (in mg) are as follows: 2.01, 2.00, 1.89, 1.96, 1.99, 2.02, 1.98, 1.94, and 1.97. Use the guide questions to complete this section of the examination. All answers in this section will be entered decimal format via short answer. Enter your answers up to the 3rd decimal point. Add trailing zeros if necessary to complete your answer.arrow_forward
- The drug cyclophosphamide is administered for breast cancer at a daily dose of 100 mg/m^2 for up to 14 consecutive days. The BSA of a patient measuring 5 ft and 1 inch in height and weighing 95 lbs is ____ m^2, and total quantity administered over the 2-week period is ____ g.arrow_forwardA concentration solution of hydrochloric acid has a concentration of 1.202 (± 0.005) M. If 14.00 (± 0.07) mL of this solution is placed in a 250.00 (± 0.05) mL volumetric flask and water is added to the mark, what is the absolute uncertainty reported to the correct number of significant figures for the dilute concentration of HCl?arrow_forwardIn order to find the density of a solution of unknown density, 10 mL of solution was drawn into a clean and dry beaker three times with a pipette and weighed and the weighing results were found to be 65.1452 g, 64.9982 g, 65.1027 g. Calculate the density of the solution and the standard deviation of the measurements, since the empty weight of the beaker is 52.2461 g.arrow_forward
- A volumetric flask that is to be used to measure volume is supposed to be marked at 10.00 ml but is actually marked at 9.95 ml. This error affects its precision. True or false? please explainarrow_forwardA student determined in a set of four experiments that the density of magnesium metal was 1.66 g/ml,1.65 g/ml, 1.67 g/ml, 1.67 g/ml. The accepted value for its density is 1.72 g/ml. What can you concludeabout the precision and accuracy of the student’s data?arrow_forwardA measurement of the mass of a specimen was determined to be 4.203 plus or minus 0.001 g. What is the fractional uncertainty in the mass?arrow_forward
- The sun is 1.496 x 1011 meters from the earth. If light travels at 3.0 x 108 m/sec, how many seconds will it take light to get from the sun to the earth? How many minutes is that?. Round each answer to proper sig. figs.arrow_forwardAn Amazon Prime delivery truck carrying COVID-19 vaccines from the Pfizer distribution center in Kalamazoo, MI to York College, NY makes a stop in Columbus, OH. The distance from Kalamazoo to Columbus is 236.7 miles and the total distance from Kalamazoo to York College is 835.4 miles. If the truck travels at 1.45 Km/min, how many hours will it take to arrive at York College after the stop in Columbus? Round your answer to the ones place.arrow_forwardThe accepted value of the melting point of pure aspirin is 135 °C. Trying to verify that value, you obtain 134 °C, 136 °C, 133 °C, and 138 °C in four separate trials. Your partner finds 138 °C, 137 °C, 138 °C, and 138 °C. (a) Calculate the average value and percent error for your data and your partner’s data. (b) Which of you is more precise? More accurate?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
- Introductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning
Introductory Chemistry: An Active Learning Approa...
Chemistry
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Cengage Learning
Measurement and Significant Figures; Author: Professor Dave Explains;https://www.youtube.com/watch?v=Gn97hpEkTiM;License: Standard YouTube License, CC-BY
Trigonometry: Radians & Degrees (Section 3.2); Author: Math TV with Professor V;https://www.youtube.com/watch?v=U5a9e1J_V1Y;License: Standard YouTube License, CC-BY