Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1, Problem 100AE
The active ingredient of aspirin tablets is acetylsalicylic acid, which, has a density of 1.4 g/cm3. In a lab class, a student used paper chromatography to isolate another common ingredient of headache remedies. The isolated sample had a mass of 0.384 g and a volume of 0.32 cm3. Given the data in the following table, what was the other ingredient in the headache remedy?
Density Values for Potential Headache Remedies
| Compound | Density (g/cm3) |
| White table sugar | 0.70 |
| Caffeine | 1.2 |
| Acetylsalicylic acid | 1.4 |
| Sodium chloride | 2.2 |
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
II.
BOILING POINT ELEVATION:
The temperature of a boiling 50 mL of distilled water in an Erlenmeyer flask with a small
flame was taken to be 98°C. The bulb of the thermometer must not touch the bottom or sides
of the Erlenmeyer flask.
In another Erlenmeyer flask, 2.83 grams of urea is dissolved in 10 grams of distilled water. The
solution was let to boil gently and its boiling point was recorded to be 101°C.
DATA AND RESULTS: (Show all pertinent computations on the space provided if applicable.
Answers with no computation will not be considered.)
Mass of urea in grams
Mass of water in grams
Boiling point of distilled water in degrees
Celsius
Boiling point of urea solution in degrees
Celsius
Molecular weight of urea in g/mol
(experimental)
Molecular weight of urea in g/mol
(calculated)
Percent Error of Molecular weights of urea
Change in boiling point
SOLUTION/S:
While creating a piece of art work, a student becomes curious about the ink he is using to create his art. He wonders if the in
is a pure substance or a mixture. The ink appears to be uniform throughout, but separates when a chromatography experimer
is performed on it, leaving multiple marks of different colors along the chromatography paper.
Using his observations of the properties of the ink, the student can classify it as a
heterogeneous mixture.
solution.
compound.
element.
A student dissolves a Jefferson nickel to make 100.00 mL
of solution in a volumetric flask. The student takes a
5.00 mL aliquot of the first solution and dilutes it to make
100.00 mL of a second solution. The student places a
sample of the second solution in a cuvette for analysis
using spectrophotometry.
The molarity of the copper solution in the cuvette was
determined by spectrophotometric analysis to be
2.90 x 10-2 M Cu. Calculate the mass of copper in the
Jefferson nickel used to make the first solution.
Use the diagram to help visualize the dilution process.
WE
IN GOD
TRUST
100 mL
LIBERTY 200
5 mL
100 mL
cuvette
Chapter 1 Solutions
Chemistry
Ch. 1 - Define and explain the differences between the...Ch. 1 - Is the scientific method suitable for solving...Ch. 1 - Which of the following statements could be tested...Ch. 1 - For each of the following pieces of glassware,...Ch. 1 - A student performed an analysis of a sample for...Ch. 1 - Compare and contrast the multiplication/division...Ch. 1 - Explain how density can be used as a conversion...Ch. 1 - On which temperature scale (F, C. or K) docs 1...Ch. 1 - Distinguish between physical changes and chemical...Ch. 1 - Why is the separation of mixtures into pure or...
Ch. 1 - a. There are 365 days per year, 24 hours per day,...Ch. 1 - Prob. 2ALQCh. 1 - When a marble is dropped into a beaker of water,...Ch. 1 - Prob. 4ALQCh. 1 - You may have noticed that when water boils, you...Ch. 1 - If you place a glass rod over a burning candle,...Ch. 1 - Which characteristics of a solid, a liquid, and a...Ch. 1 - Sketch a magnified view (showing atoms/molecules)...Ch. 1 - Paracelsus, a sixteenth-century alchemist and...Ch. 1 - What is wrong with the following statement? "The...Ch. 1 - Why is it incorrect to say that the results of a...Ch. 1 - You have a 1.0-cm3 sample of lead and a 1.0-cm3...Ch. 1 - Consider the addition of 15.4 to 28. What would a...Ch. 1 - Consider multiplying 26.2 by 16.43. What would a...Ch. 1 - True or false? For mathematical operation...Ch. 1 - Is there a difference between a homogeneous...Ch. 1 - The difference between a law and a theory is the...Ch. 1 - The scientific method is a dynamic process. What...Ch. 1 - Explain the fundamental steps of the scientific...Ch. 1 - Prob. 22QCh. 1 - A measurement is a quantitative observation...Ch. 1 - To determine the volume of a cube, a student...Ch. 1 - What are significant figures? Show how to indicate...Ch. 1 - A cold front moves through and the temperature...Ch. 1 - In a multiple-step calculation, is it better to...Ch. 1 - Is the density of a gaseous substance larger or...Ch. 1 - Give four examples illustrating each of the...Ch. 1 - Which of the following are exact numbers? a. There...Ch. 1 - Indicate the number of significant figures in each...Ch. 1 - How many significant figures are there in each of...Ch. 1 - How many significant figures are in each of the...Ch. 1 - Round off each of the following numbers to the...Ch. 1 - Use exponential notation to express the number...Ch. 1 - You have liquid in each graduated cylinder shown:...Ch. 1 - The beakers shown below have different precisions....Ch. 1 - Evaluate each of the following, and write the...Ch. 1 - Perform the following mathematical operations, and...Ch. 1 - Perform the following mathematical operations, and...Ch. 1 - Perform the following mathematical operations, and...Ch. 1 - Perform each of the following conversions. a. 8.43...Ch. 1 - a. How many kilograms are in 1 teragram? b. How...Ch. 1 - Perform the following unit conversions. a....Ch. 1 - Perform the following unit conversions. a. 908 oz...Ch. 1 - Use the following exact conversion factors to...Ch. 1 - Although the preferred SI unit of area is the...Ch. 1 - Precious metals and gems are measured in troy...Ch. 1 - Apothecaries (druggists) use the following set of...Ch. 1 - For a pharmacist dispensing pills or capsules, it...Ch. 1 - A children's pain relief elixir contains 80. mg...Ch. 1 - Science fiction often uses nautical analogies to...Ch. 1 - The world record for the hundred meter dash is...Ch. 1 - You are driving 65 mi/h and take your eyes off the...Ch. 1 - You pass a road sign saying New York 112 km. If...Ch. 1 - The dosage for an antibiotic is prescribed at 8.0...Ch. 1 - In recent years, there has been a large push for...Ch. 1 - Prob. 59ECh. 1 - Carbon monoxide (CO) detectors sound an alarm when...Ch. 1 - Convert the following Fahrenheit temperatures to...Ch. 1 - A thermometer gives a reading of 96.1F 0.2F. What...Ch. 1 - Convert the following Celsius temperatures to...Ch. 1 - Convert the following Kelvin temperatures to...Ch. 1 - At what temperature is the temperature in degrees...Ch. 1 - The average daytime temperatures on the earth and...Ch. 1 - Use the figure below to answer the following...Ch. 1 - Ethylene glycol is the main component in...Ch. 1 - A material will float on the surface of a liquid...Ch. 1 - One metal object is a cube with edges of 3.00 cm...Ch. 1 - A star is estimated to have a mass of 2 1036 kg....Ch. 1 - A rectangular block has dimensions 2.9 cm 3.5 cm ...Ch. 1 - Diamonds are measured in carats, and 1 carat =...Ch. 1 - At room temperature the element bromine, Br2, is a...Ch. 1 - A sample containing 33.42 g of metal pellets is...Ch. 1 - The density of pure silver is 10.5 g/cm3 at 20C....Ch. 1 - In e-ach of the following pairs, which has the...Ch. 1 - a. Calculate the mass of ethanol in 1.50 qt of...Ch. 1 - In each of the following pairs, which has the...Ch. 1 - Using Table 1.5, calculate the volume of 25.0 g of...Ch. 1 - The density of osmium (the densest metal) is 22.57...Ch. 1 - A copper wire (density = 8.96 g/cm3) has a...Ch. 1 - Match each description below with the following...Ch. 1 - Define the following terms: solid, liquid, gas,...Ch. 1 - What is the difference between homogeneous and...Ch. 1 - Classify the following mixtures as homogeneous or...Ch. 1 - Classify each of the following as a mixture or a...Ch. 1 - Suppose a teaspoon of magnesium filings and a...Ch. 1 - If a piece of hard, white blackboard chalk is...Ch. 1 - During a very cold winter, the temperature may...Ch. 1 - Classify the following as physical or chemical...Ch. 1 - The properties of a mixture are typically averages...Ch. 1 - Two spherical objects have the same mass. One...Ch. 1 - A 194-g sample of caffeine (C8H10N4O2) contains...Ch. 1 - Lipitor, a pharmaceutical drug that has been shown...Ch. 1 - In Shakespeares Richard III, the First Murderer...Ch. 1 - Prob. 97AECh. 1 - In the opening scenes of the movie Raiders of the...Ch. 1 - Prob. 99AECh. 1 - The active ingredient of aspirin tablets is...Ch. 1 - This year, like many past years, you begin to feel...Ch. 1 - Which of the following are chemical changes? Which...Ch. 1 - A person with high cholesterol has 250 mg of...Ch. 1 - Prob. 104AECh. 1 - A column of liquid is found to expand linearly on...Ch. 1 - A 25.00-g sample of a solid is placed in a...Ch. 1 - For each of the following, decide which block is...Ch. 1 - According to the Official Rules of Baseball, a...Ch. 1 - The density of an irregularly shaped object was...Ch. 1 - The chemist in Example 1.14 did some further...Ch. 1 - The longest river in the world is the Nile River...Ch. 1 - Secretariat is known as the horse with the fastest...Ch. 1 - The hottest temperature recorded in the United...Ch. 1 - Prob. 114CWPCh. 1 - Which of the following statements is(are) true? a....Ch. 1 - Which of the following describes a chemical...Ch. 1 - A rule of thumb in designing experiments is to...Ch. 1 - Draw a picture showing the markings (graduations)...Ch. 1 - Many times errors are expressed in terms of...Ch. 1 - A person weighed 15 pennies on a balance and...Ch. 1 - On October 21, 1982, the Bureau of the Mint...Ch. 1 - As part of a science project, you study traffic...Ch. 1 - Sterling silver is a solid solution of silver and...Ch. 1 - Make molecular-level (microscopic) drawings for...Ch. 1 - Confronted with the box shown in the diagram, you...
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
- Potassium sulfate has a solubility of 15 g/ 100 g water at 40C. A solution is prepared by adding 39.0 g of potassium sulfate to 225 g of water, carefully heating the solution, and cooling it to 40C. A homogeneous solution is obtained. Is this solution saturated, unsaturated, or supersaturated? The beaker is shaken, and precipitation occurs. How many grams of potassium sulfate would you expect to crystallize out?arrow_forwardYou receive a mixture of table salt and sand and have to separate the mixture into pure substances. Explain how you would carry out this task. Is your method based on physical or chemical properties? Explain.arrow_forwardYou can analyze for a copper compound in water using an instrument called a spectrophotometer. [A spectrophotometer is a scientific instrument that measures the amount of light (of a given wavelength) that is absorbed by the solution] The amount of light absorbed at a given wavelength of light (A) depends directly on the mass of compound per liter of solution. To calibrate the spectrophotometer, you collect the following data: Plot the absorbance (A) against the mass of copper compound per liter (g/L), and find the slope (m) and intercept (b) (assuming that A is y and the amount in solution is x in the equation for a straight line, y = mx + b). What is the mass of copper compound in the solution in g/L and mg/mL when the absorbance is 0.635?arrow_forward
- Some bottles of colorless liquids were being labeled when the technicians accidentally mixed them up and lost track of their contents. A 15.0-mL sample withdrawn from one bottle weighed 22.3 g. The technicians knew that the liquid was either acetone, benzene, chloroform, or carbon tetrachloride (which have densities of 0.792 g/cm3, 0.899 g/cm3, 1.489 g/cm3, and 1.595 g/cm3, respectively). What was the identity of the liquid?arrow_forwardHow do you distinguish (a) chemical properties from physical properties? (b) distillation from filtration? (c) a solute from a solution?arrow_forwardOn October 21, 1982, the Bureau of the Mint changed the composition of pennies (see Exercise 120). Instead of an alloy of 95% Cu and 5% Zn by mass, a core of 99.2% Zn and 0.8% Cu with a thin shell of copper was adopted. The overall composition of the new penny was 97.6% Zn and 2.4% Cu by mass. Does this account for the difference in mass among die pennies in Exercise 120? Assume the volume of the individual metals that make up each penny can be added together to give the overall volume of the penny, and assume each penny is the same size. (Density of Cu = 8.96 g/cm3; density of Zn = 7.14 g/cm3).arrow_forward
- A student dissolves a Jefferson nickel to make 100.00 mL of solution in a volumetric flask. The student takes a 5.00 mL aliquot of the first solution and dilutes it to make 100.00 mL of a second solution. The student places a sample of the second solution in a cuvette for analysis using spectrophotometry. The molarity of the copper solution in the cuvette was determined by spectrophotometric analysis to be 2.90×10−2 M Cu. Calculate the mass of copper in the Jefferson nickel used to make the first solution.arrow_forward1a) A children's liquid medicine contains 100 mg of the active ingredient in 5 mL. If a child should receive 200 mg of the active ingredient, how many milliliters of the medicine should the child be given? For the purposes of this question, assume that these numbers are exact. 1b)The package states that one teaspoon (tsp) is approximately equal to 5 mL. Calculate the number of teaspoons that the child should receive. Use the given approximation as your conversion factor.arrow_forwardThe solubility of benzic acid in water at room temperature is 0.38 g per 100 ml of water. If 4.62 g of benzic acid are dissolved in 100 ml of hot water (assume all the benzic acid dissolves) and then allowed to cool it room temperature followed by vacuum filtration how many grams of benzic acid crystals will be obtained?arrow_forward
- Calculating the density of a rectangular wooden block (fig 3). In determining the density of a rectangular wooden block, use the information in the table below and the formula to fill in the empty boxes. (Apply the uncertainty rule) Fig 3. Volume of wooden block (cm) = Length (cm) x Width (cm) x Thickness (cm) Mass (g) of wooden block (g) Length of wooden block (cm) Width of wooden block (cm) Thickness of wooden block (cm) Volume of wooden block (cm) Density of wooden block (g/cm) d= m/v 20.5g 5.00cm 5.00cm 1.00 cm 2arrow_forward. A sample of an ethanol-water solution has a volume of 52.5 cm³ and a mass of 49.6 g. What is the percentage of ethanol (by mass) in the solution? (Assume that there is no change in volume when the pure compounds are mixed.) The density of ethanol is 0.789 g/cm³ and that of water is 0.998 g/cm³. Percentage of ethanol = b. Alcoholic beverages are rated in proof, which is a measure of the relative amount of ethanol in the beverage. Pure ethanol is exactly 200 proof, a solution that is 50% ethanol by volume is exactly 100 proof. What is the proof of the given ethanol-water solution? proof Submit Answer % [References] Try Another Version 10 item attempts remainingarrow_forwardUnfermented grape juice used to make wine is called a “must.” The sugar content of the must determines whether the wine will be dry or sweet. The sugar content is found by measuring the density of the must. If the density is lower than 1.070 g/mL, then sugar syrup is added until thedensity reaches 1.075 g/mL. Suppose that you have a sample taken from a must whose mass is 47.28 g and whose volume is 44.60 mL. Describe how you would determine whether or not sugar syrup needs to be added and if so, how would you estimate how much sugar syrup to add?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Types of Matter: Elements, Compounds and Mixtures; Author: Professor Dave Explains;https://www.youtube.com/watch?v=dggHWvFJ8Xs;License: Standard YouTube License, CC-BY