EBK LABORATORY MANUAL FOR GENERAL, ORGA
3rd Edition
ISBN: 9780321918352
Author: Timberlake
Publisher: YUZU
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1, Problem 1.99AP
A student is weighing a standard 5.00 g weight four times on two different balances to check them for accuracy and precision. The following shows the data:
| Trial | Balance A | Balance B |
| 1 | 4.2 g | 5.1 g |
| 2 | 4.1 g | 4.9 g |
| 3 | 4.3 g | 4.7 g |
| 4 | 4.2 g | 5.2 g |
Which of the balances is more accurate? Which is more precise?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
You are given four values (1.033, 4.157, 1.05, and 4.6) and asked to conduct calculations on them. You perform a series of mathematical operations using the values and make a table that includes the calculated value as displayed on your
calculator:
Mathematical operation
Value displayed by calculator
1.033 +4.157 +1.05+4.6
10.8400
1.033 x 1.05
1.08465
4.157 - 1.05
3.10700
4.157/31.0341
0.133949
4.6/31.0341
0.148224
Round each of the values displayed by the calculator to the correct number of significant figures, and place the value in the bin that correctly indicates the number of significant digits you rounded to.
Drag the appropriate items to their respective bins.
» View Available Hint(s)
Reset Help
10.8400
1.08465
3.10700
0.133949
0.148224
1 significant figure
2 significant figures
3 significant figures
4 significant figures
A student pipetted 10 mL of a sample solution into a 250 mL volumetric flask and diluted it to the mark with distilled water. The student then, pipetted 10 mL of this new solution into a 50.00 mL volumetric flask and diluted it to the mark with water. What is the dilution factor of the final solution?
25X
100X
125X
5X
50X
A student decided to undertake a balance calibration exercise during a lab session involving burette calibration. He found the apparent weight of calcium carbonate in air to be 100 grams and density to be 1.33g/mL. Assume that the standard steel weight used in the calibration has a density of 8.0g/mL and air has a density of 0.0012g/mL. What would be the true mass of the calcium carbonate sample?
Chapter 1 Solutions
EBK LABORATORY MANUAL FOR GENERAL, ORGA
Ch. 1 - Classify each of the following mixtures as...Ch. 1 - Classify each of the following mixtures as...Ch. 1 - Classify each of the following substances as a...Ch. 1 - Classify each of file following substances as a...Ch. 1 - Classify each of die following as an element or...Ch. 1 - Classify each of the following as an element or a...Ch. 1 - Use the periodic table to supply the missing...Ch. 1 - Use the periodic table to supply the missing...Ch. 1 - Identify and give the number of each element in...Ch. 1 - Identify and give the number of each element in...
Ch. 1 - Give the number of significant figures in each of...Ch. 1 - Give die number of significant figures in each of...Ch. 1 - Complete each of the following calculations and...Ch. 1 - Complete each of the following calculations and...Ch. 1 - A typical aspirin tablet contains 325 mg of the...Ch. 1 - On average, an adults lung volume is 5 L. Convert...Ch. 1 - Prob. 1.17PPCh. 1 - Write scientific notation for the following...Ch. 1 - Express the following numbers in a decimal form:...Ch. 1 - Express the following numbers in a decimal form:...Ch. 1 - Express the following numbers as a percent. Report...Ch. 1 - Express the following numbers as a percent. Report...Ch. 1 - Express the following numbers m decimal form: a....Ch. 1 - Express the following numbers as a fraction: a....Ch. 1 - Prob. 1.25PPCh. 1 - Determine the percent from two numbers given here...Ch. 1 - Based on your experience, is each of the following...Ch. 1 - Based on your experience, is each of the following...Ch. 1 - Calculate the grams of sugar present in a 355 mL...Ch. 1 - Calculate the density in g/mL of 2.0 L of gasoline...Ch. 1 - Prob. 1.31PPCh. 1 - A liquid has a mass of 54.5 g and a volume of 50.0...Ch. 1 - A family visiting Europe goes to the hospital...Ch. 1 - Fetal cord blood is stored at 112 F. Calculate...Ch. 1 - Prob. 1.35PPCh. 1 - Prob. 1.36PPCh. 1 - A defibrillator delivers about 360 joules per...Ch. 1 - Prob. 1.38PPCh. 1 - Two warehouses have space available for storage....Ch. 1 - Prob. 1.40PPCh. 1 - Indicate if each of the following describes a...Ch. 1 - Indicate if each of the following describes a...Ch. 1 - Prob. 1.43PPCh. 1 - Consider the following measurements determined for...Ch. 1 - A low dose of aspirin is often recommended for...Ch. 1 - A mother is to give her child 10 ccs of medicine...Ch. 1 - Give Drug X 5 mg/kg per day in two divided doses....Ch. 1 - A 38-lb child is prescribed acyclovir for chicken...Ch. 1 - A patient gets 2.0 L of fluid over 18 hours...Ch. 1 - How long would it take in hours to administer...Ch. 1 - A tablet of Benadryl (R), an antihistamine, has a...Ch. 1 - A medium-sized carrot weighs 61 g and contains 6 g...Ch. 1 - Determine whether each of the following is a...Ch. 1 - Prob. 1.54PPCh. 1 - Prob. 1.55PPCh. 1 - Prob. 1.56PPCh. 1 - Add coefficients to balance the chemical equations...Ch. 1 - Add coefficients to balance the chemical equations...Ch. 1 - Classify each of the following as a mixture or a...Ch. 1 - For each of the substances that you classified as...Ch. 1 - Prob. 1.61APCh. 1 - Prob. 1.62APCh. 1 - For each of the substances that you classified as...Ch. 1 - Prob. 1.64APCh. 1 - Use the periodic table to supply the missing...Ch. 1 - Use the periodic table to supply the missing...Ch. 1 - Prob. 1.67APCh. 1 - Prob. 1.68APCh. 1 - Prob. 1.69APCh. 1 - Prob. 1.70APCh. 1 - Supply the missing information in each of the...Ch. 1 - Supply the mating information in each of the...Ch. 1 - Prob. 1.73APCh. 1 - Prob. 1.74APCh. 1 - Prob. 1.75APCh. 1 - If a drop of blood is 0.05 mL, how many drops of...Ch. 1 - If a prescription calls for 1.0 g of...Ch. 1 - Prob. 1.78APCh. 1 - Prob. 1.79APCh. 1 - Round the following numbers to two significant...Ch. 1 - Consider the following data set for three bags of...Ch. 1 - It is flu season. Professor F has a class with 50...Ch. 1 - Prob. 1.83APCh. 1 - An adult human femur weighs about 225 g and has a...Ch. 1 - The specific gravity of olive oil is 0.703. How...Ch. 1 - Prob. 1.86APCh. 1 - To keep a room comfortable, the air is heated or...Ch. 1 - On the Kelvin scale, the lower limit of the...Ch. 1 - Prob. 1.89APCh. 1 - Prob. 1.90APCh. 1 - A cup of yogurt contains 130 Calories. Calculate...Ch. 1 - Prob. 1.92APCh. 1 - Prob. 1.93APCh. 1 - Prob. 1.94APCh. 1 - Prob. 1.95APCh. 1 - Prob. 1.96APCh. 1 - Prob. 1.97APCh. 1 - Prob. 1.98APCh. 1 - A student is weighing a standard 5.00 g weight...Ch. 1 - Prob. 1.100APCh. 1 - A mother calls you to ask about a proper dosage of...Ch. 1 - A prescription for amoxicillin comes in an oral...Ch. 1 - A patient needs exactly 1000 mL of a fluid over a...Ch. 1 - Prob. 1.104APCh. 1 - How does the arrangement of particles in a liquid...Ch. 1 - Prob. 1.106APCh. 1 - Identify each of the following as a physical...Ch. 1 - Prob. 1.108APCh. 1 - Add coefficients to balance the chemical equations...Ch. 1 - Prob. 1.110APCh. 1 - If red spheres represent oxygen atoms and blue...Ch. 1 - Prob. 1.112APCh. 1 - To donate blood, your blood must have a density...Ch. 1 - Prob. 1.114CPCh. 1 - A physician orders a Heparin drip at 8.0 units per...Ch. 1 - The following equation shows the reaction of...Ch. 1 - Table sugar (C12H22O12) is completely dissolved in...Ch. 1 - We know high density lipoprotein (HDL) and low...Ch. 1 - Prob. 1IA.1QCh. 1 - Can an element be a pure substance? Can a compound...Ch. 1 - Using the information given, how might you define...Ch. 1 - Prob. 1IA.4QCh. 1 - Prob. 1IA.5QCh. 1 - Describe the difference between a homogeneous and...Ch. 1 - Would you classify the following matter as...Ch. 1 - What do you think the labels (s), (l), (g), and...Ch. 1 - Prob. 2IA.1QCh. 1 - Prob. 2IA.2QCh. 1 - Provide names for the following elements and...Ch. 1 - Prob. 2IA.4QCh. 1 - Prob. 2IA.5QCh. 1 - Are most of the elements on the periodic table...Ch. 1 - Prob. 1ICCh. 1 - Prob. 2ICCh. 1 - Find out how to read and interpret the results of...
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
- A person weighed 15 pennies on a balance and recorded the following masses: 3.112 g 3.109 g 3.059 g 2.467 g 3.079 g 2.518 g 3.129 g 2.545 g 3.050 g 3.053 g 3.054 g 3.072 g 3.081 g 3.131 g 3.064 g Curious about the results, he looked at the dates on each penny. Two of the light pennies were minted in 1983 and one in 1982. The dates on the 12 heavier pennies ranged from 1970 to 1982. Two of the 12 heavier pennies were minted in 1982. a. Do you think the Bureau of the Mint changed the way it made pennies? Explain. b. The person calculated the average mass of the 12 heavy pennies. He expressed this average as 3.0828 g 0.0482 g. What is wrong with the numbers in this result, and how should the value be expressed?arrow_forwardThe density of a solution of sulfuric acid is 1.285 g/cm3, and it is 38.08% acid by mass. Calculate the volume of the acid solution (in mL) you need to supply 125 g of sulfuric acid.arrow_forwardSpecific gravity is a physical property. Beakers hold three clear, colorless liquids A, B, and C. The values of the specific gravities of the liquids are measured and then listed in the Before freezing column. The beakers are placed in a freezer until a solid crust forms across the surface of each. The beakers are placed in a freezer until a solid crust forms across the surface of each. The crusts are removed, and the liquids are warmed to room temperature. Their specific gravities are measured again, and then their values are listed in the After Freezing column. Which beakers contains a pure substance, and which contain a mixture? Explain your reasoningarrow_forward
- What is the difference between (a) mass and density? (b) an extensive and an intensive property? (c) a solvent and a solution?arrow_forwardIn each case, decide if the underlined property is a physical or chemical property. (a) The color of elemental bromine is orange-red. (b) Iron turns to rust in the presence of air and water. (c) Hydrogen can explode when ignited in air (Figure 1.16). (d) The density of titanium metal is 4.5 g/cm3. (e) Tin metal melts at 505 K. (f) Chlorophyll, a plant pigment, is green.arrow_forwardGold leaf, which is used for many decorative purposes, is made by hammering pure gold into very thin sheets. Assuming that a sheet of gold leaf is 1.27 105 cm thick, how many square feet of gold leaf could be obtained from 28.35 g gold? The density of gold is 19.3 g/cm3.arrow_forward
- 1-86 The specific heats of some elements at 25oC are as follows: aluminum = 0.215 cal/g · oC; carbon (graphite) = 0.170 caI/g oC; iron = 0.107 cal/g mercury = 0.033 1 caI/g oC. (a) Which element would require the smallest amount of heat to raise the temperature of 100 g of the element by 10oC? (b) If the same amount of heat needed to raise the temperature of 1 g of aluminum by 25oC were applied to 1 g of mercury, by how many degrees would its temperature be raised? (c) If a certain amount of heat is used to raise the temperature of 1.6 g of iron by 10oC, the temperature of 1 g of which element would also be raised by 10oC, using the same amount of heat?arrow_forwardVanadium metal is added to steel to impart strength. The density of vanadium is 5.96 g/cm3. Express this in SI units (kg/m3).arrow_forwardWhat is the difference in surface area between two circles, one of radius 7.98 cm, the other of radius 8.50 cm? The surface area of a circle of radius r is r2. Obtain the result to the correct number of significant figures.arrow_forward
- Although the preferred SI unit of area is the square meter, land is often measured in the metric system in hectares (ha). One hectare is equal to 10,000 m2. In the English system, land is often measured in acres (1 acre = 160 rod2). Use the exact conversions and those given in Exercise 47 to calculate the following. a. 1 ha = __________ km2 b. The area of a 5.5-acre plot of land in hectares, square meters, and square kilometers c. A lot with dimensions 120 ft by 75 ft is to be sold for 6500. What is the price per acre? What is the price per hectare?arrow_forwardHexane (C6H14, density = 0.766 g/cm3), perfluoro-hexane (C6F14, density = 1.669 g/cm3), and water are immiscible liquids; that is, they do not dissolve in one another. You place 10 mL of each in a graduated cylinder, along with pieces of high-density polyethylene (HDPE, density = 0.97 g/cm3), polyvinyl chloride(PVC, density = 1.36 g/cm3), and Teflon (density = 2.3 g/cm3). None of these common plastics dissolves in these liquids. Describe what you expect to see.arrow_forwardThe following data refer to the element phosphorus. Classify each as a physical or a chemical property. (a) It exists in several forms, for example, white, black, and red phosphorus. (b) It is a solid at 25C and 1 atm. (c) It is insoluble in water. (d) It burns in chlorine to form phosphorus trichloride.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 Learning
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
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 & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: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
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