General Chemistry - Standalone book (MindTap Course List)
11th Edition
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
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 3, Problem 3.99QP
Caffeine, the stimulant in coffee and tea, has the molecular formula C8H10N4O2. Calculate the mass percentage of each element in the substance. Give the answers to three significant figures.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
A mixture of butene, C4H8, and butane, C4H₁0, is burned in
air to give CO2 and water. Suppose you burn 2.85 g of the
mixture and obtain 8.81 g of CO2 and 3.99 g of H₂O. What
are the mass percentages of butene and butane in the
mixture?
Mass percentage of butene =
Mass percentage of butane =
%
%
The reaction between potassium chlorate and red phosphorus takes place
when you strike a match on a matchbox. If you were to react 30.9 g of
potassium chlorate (KClO3) with excess red phosphorus, what mass of
tetraphosphorus decaoxide (P4O10) could be produced?
Mass =
KClO3(s) + P4(s) → P4O10 (s) + KCl(s) (unbalanced)
g
cetic acid (HC2H3O2HC2H3O2) is the active ingredient in vinegar. Calculate the mass percent composition of carbon in acetic acid.
Express the mass percentage to four significant figures.
Chapter 3 Solutions
General Chemistry - Standalone book (MindTap Course List)
Ch. 3.1 - Calculate the formula weights of the following...Ch. 3.1 - For the following compounds, write the molecular...Ch. 3.2 - a. What is the mass in grams of a calcium atom,...Ch. 3.2 - Hydrogen peroxide, H2O2, is a colorless liquid. A...Ch. 3.2 - Nitric acid, HNO3, is a colorless, corrosive...Ch. 3.2 - Hydrogen cyanide, HCN, is a volatile, colorless...Ch. 3.2 - You have 1.5 moles of tricycles. a How many moles...Ch. 3.3 - Ammonium nitrate, NH4NO3, which is prepared from...Ch. 3.3 - How many grams of nitrogen, N, are there in a...Ch. 3.4 - A 3.87-mg sample of ascorbic acid (vitamin C)...
Ch. 3.4 - Prob. 3.2CCCh. 3.5 - A sample of compound weighing 83.5 g contains 33.4...Ch. 3.5 - Benzoic acid is a white, crystalline powder used...Ch. 3.5 - The percentage composition of acetaldehyde is...Ch. 3.5 - Prob. 3.3CCCh. 3.6 - In an industrial process, hydrogen chloride, HCl,...Ch. 3.7 - Sodium is a soft, reactive metal that instantly...Ch. 3.7 - Sphalerite is a zinc sulfide (ZnS) mineral and an...Ch. 3.7 - The British chemist Joseph Priestley prepared...Ch. 3.7 - The main reaction of a charcoal grill is C(s) +...Ch. 3.8 - Solid ReO3 is a material that is an extremely good...Ch. 3.8 - Aluminum chloride, AlCl3, is used as a catalyst in...Ch. 3.8 - In an experiment, 7.36 g of zinc was heated with...Ch. 3.8 - New industrial plants for acetic acid react liquid...Ch. 3.8 - Prob. 3.6CCCh. 3 - What is the difference between a formula weight...Ch. 3 - Describe in words how to obtain the formula weight...Ch. 3 - One mole of N2 contains how many N2 molecules? How...Ch. 3 - Prob. 3.4QPCh. 3 - Prob. 3.5QPCh. 3 - A substance has the molecular formula C6H12O2....Ch. 3 - Hydrogen peroxide has the empirical formula HO and...Ch. 3 - Describe in words the meaning of the equation...Ch. 3 - Prob. 3.9QPCh. 3 - Prob. 3.10QPCh. 3 - Prob. 3.11QPCh. 3 - Prob. 3.12QPCh. 3 - How many grams of NH3 will have the same number of...Ch. 3 - Which of the following has the largest number of...Ch. 3 - How many atoms are present in 123 g of magnesium...Ch. 3 - Calculations with Chemical Formulas and Equations...Ch. 3 - Prob. 3.17QPCh. 3 - Moles within Moles and Molar Mass Part 1: a How...Ch. 3 - You react nitrogen and hydrogen in a container to...Ch. 3 - Propane, C3H8, is the fuel of choice in a gas...Ch. 3 - Prob. 3.21QPCh. 3 - Prob. 3.22QPCh. 3 - High cost and limited availability of a reactant...Ch. 3 - Prob. 3.24QPCh. 3 - A friend asks if you would be willing to check...Ch. 3 - Prob. 3.26QPCh. 3 - Find the formula weights of the following...Ch. 3 - Find the formula weights of the following...Ch. 3 - Calculate the formula weight of the following...Ch. 3 - Calculate the formula weight of the following...Ch. 3 - Ammonium nitrate, NH4NO3, is used as a nitrogen...Ch. 3 - Phosphoric acid, H3PO4, is used to make phosphate...Ch. 3 - Calculate the mass (in grams) of each of the...Ch. 3 - Diethyl ether, (C2H5)2O, commonly known as ether,...Ch. 3 - Glycerol, C3H8O3, is used as a moistening agent...Ch. 3 - Calculate the mass in grams of the following. a...Ch. 3 - Calculate the mass in grams of the following. a...Ch. 3 - Boric acid, H3BO3, is a mild antiseptic and is...Ch. 3 - Carbon disulfide, CS2, is a colorless, highly...Ch. 3 - Obtain the moles of substance in the following. a...Ch. 3 - Obtain the moles of substance in the following. a...Ch. 3 - Calcium sulfate, CaSO4, is a white, crystalline...Ch. 3 - A 1.547-g sample of blue copper(II) sulfate...Ch. 3 - Calculate the following. a number of atoms in 8.21...Ch. 3 - Calculate the following. a number of atoms in 25.7...Ch. 3 - Carbon tetrachloride is a colorless liquid used in...Ch. 3 - Chlorine trifluoride is a colorless, reactive gas...Ch. 3 - A 1.680-g sample of coal contains 1.584 g C....Ch. 3 - A 6.01-g aqueous solution of isopropyl alcohol...Ch. 3 - Phosphorus oxychloride is the starting compound...Ch. 3 - Ethyl mercaptan is an odorous substance added to...Ch. 3 - A fertilizer is advertised as containing 14.0%...Ch. 3 - Seawater contains 0.0065% (by mass) of bromine....Ch. 3 - A sample of an alloy of aluminum contains 0.0898...Ch. 3 - A sample of gas mixture from a neon sign contains...Ch. 3 - Calculate the percentage composition for each of...Ch. 3 - Calculate the percentage composition for each of...Ch. 3 - Calculate the mass percentage of each element in...Ch. 3 - Calculate the mass percentage of each element in...Ch. 3 - Which contains more carbon, 6.01 g of glucose....Ch. 3 - Which contains more sulfur, 40.8 g of calcium...Ch. 3 - Ethylene glycol is used as an automobile...Ch. 3 - Prob. 3.64QPCh. 3 - An oxide of osmium (symbol Os) is a pale yellow...Ch. 3 - An oxide of tungsten (symbol W) is a bright yellow...Ch. 3 - Potassium bromate is a colorless, crystalline...Ch. 3 - Hydroquinone, used as a photographic developer, is...Ch. 3 - Acrylic acid, used in the manufacture of acrylic...Ch. 3 - Malonic acid is used in the manufacture of...Ch. 3 - Two compounds have the same composition: 92.25% C...Ch. 3 - Two compounds have the same composition: 85.62% C...Ch. 3 - Putreseine a substance produced by decaying...Ch. 3 - Compounds of boron with hydrogen are called...Ch. 3 - Oxalic acid is a toxic substance used by laundries...Ch. 3 - Adipic acid is used in the manufacture of nylon....Ch. 3 - Ethylene, C2H4, bums in oxygen to give carbon...Ch. 3 - Hydrogen sulfide gas, H2S, burns in oxygen to give...Ch. 3 - Prob. 3.79QPCh. 3 - Ethanol, C2H5OH, burns with the oxygen in air to...Ch. 3 - Iron in the form of fine wire burns in oxygen to...Ch. 3 - Prob. 3.82QPCh. 3 - Nitric acid, HNO3, is manufactured by the Ostwald...Ch. 3 - White phosphorus, P4, is prepared by fusing...Ch. 3 - Tungsten metal, W, is used to make incandescent...Ch. 3 - Acrylonitrile, C3H3N, is the starting material for...Ch. 3 - The following reaction, depicted using molecular...Ch. 3 - Using the following reaction (depicted using...Ch. 3 - When dinitrogen pentoxide, N2O5, a white solid, is...Ch. 3 - Copper metal reacts with mine acid. Assume that...Ch. 3 - Potassium superoxide, KO2, is used in rebreathing...Ch. 3 - Solutions of sodium hypochlorite, NaClO, are sold...Ch. 3 - Methanol, CH3OH, is prepared industrially from the...Ch. 3 - Carbon disulfide, CS2, burns in oxygen. Complete...Ch. 3 - Prob. 3.95QPCh. 3 - Hydrogen cyanide, HCN, is prepared from ammonia,...Ch. 3 - Aspirin (acetylsalicylic acid) is prepared by...Ch. 3 - Methyl salicylate (oil of wintergreen) is prepared...Ch. 3 - Caffeine, the stimulant in coffee and tea, has the...Ch. 3 - Morphine, a narcotic substance obtained from...Ch. 3 - A moth repellent, para-dichlorobenzene, has the...Ch. 3 - Sorbic acid is added to food as a mold inhibitor....Ch. 3 - Thiophene is a liquid compound of the elements C,...Ch. 3 - Aniline, a starting compound for urethane plastic...Ch. 3 - A sample of limestone (containing calcium...Ch. 3 - A titanium ore contains rutile (TiO2) plus some...Ch. 3 - Ethylene oxide, C2H4O, is made by the oxidation of...Ch. 3 - Nitrobenzene, C6H5NO2, an important raw material...Ch. 3 - Zinc metal can be obtained from zinc oxide, ZnO,...Ch. 3 - Hydrogen cyanide, HCN, can be made by a two-step...Ch. 3 - Calcium carbide, CaC2, used to produce acetylene,...Ch. 3 - A mixture consisting of 11.9 g of calcium...Ch. 3 - Alloys, or metallic mixtures, of mercury with...Ch. 3 - A sample of sandstone consists of silica, SiO2,...Ch. 3 - Prob. 3.115QPCh. 3 - Prob. 3.116QPCh. 3 - Exactly 4.0 g of hydrogen gas combines with 32 g...Ch. 3 - Aluminum metal reacts with iron(III) oxide to...Ch. 3 - Prob. 3.119QPCh. 3 - You perform a combustion analysis on a 255 mg...Ch. 3 - Prob. 3.121QPCh. 3 - A 3.0-L sample of paint that has a density of...Ch. 3 - A 12.1-g sample of Na2SO3 is mixed with a 14.6-g...Ch. 3 - Potassium superoxide, KO2, is employed in a...Ch. 3 - Calcium carbonate is a common ingredient in...Ch. 3 - Prob. 3.126QPCh. 3 - Prob. 3.127QPCh. 3 - Copper reacts with nitric acid according to the...Ch. 3 - A sample of methane gas, CH4(g), is reacted with...Ch. 3 - A sample containing only boron and fluorine was...Ch. 3 - Prob. 3.131QPCh. 3 - Prob. 3.132QPCh. 3 - A 0.500-g mixture of Cu2O and CuO contains 0.425 g...Ch. 3 - A mixture of Fe2O3, and FeO was found to contain...Ch. 3 - Hemoglobin is the oxygen-carrying molecule of red...Ch. 3 - Penicillin V was treated chemically to convert...Ch. 3 - A 3.41-g sample of a metallic element, M, reacts...Ch. 3 - Prob. 3.138QPCh. 3 - An alloy of iron (54.7%), nickel (45.0%), and...Ch. 3 - Prob. 3.140QPCh. 3 - A power plant is driven by the combustion of a...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Classify each example of molecular art as a pure element, a pure compound, or a mixture.
General, Organic, and Biological Chemistry - 4th edition
45. Calculate the mass of nitrogen dissolved at room temperature in an 80.0-L home aquarium. Assume a total pre...
Chemistry: Structure and Properties
Practice Problem ATTEMPT
Write the rate expressions for each of the following reactions:
(a)
(b)
(c)
Chemistry
Practice Problem 1.22 Which of the following alkenes can exist as cis-trans isomers? Write their structures. Bu...
Organic Chemistry
During the early part of the 20th century, sulfanilamide (an antibacterial drug) was only administered by injec...
Elementary Principles of Chemical Processes, Binder Ready Version
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
- 1. Express the composition of ammonium carbonate, (NH4)2CO3, in terms of the mass of each element in 1.00 mol of compound and the mass percent of each element. 2. What is the mass of carbon in 454 g octane, C8H18?arrow_forwardMorphine, a narcotic substance obtained from opium, has the molecular formula C17H19NO3. What is the mass percentage of each element in morphine (to three significant figures)?arrow_forward3.117 For the oxides of iron, FeO, Fe2O3, and Fe3O4, describe how you would determine which has the greatest percentage by mass of oxygen. Would you need to look up any information to solve this problem?arrow_forward
- Assume that the radius of Earth is 6400 km, the crust is 50. km thick, the density of the crust is 3.5 g/cm3, and 25.7% of the crust is silicon by mass. Calculate the total mass of silicon in the crust of Earth.arrow_forwardGiven that the density of argon is 1.78 g/L under standard conditions of temperature and pressure, how many argon atoms are present in a room with dimensions 4.0 m 5.0 m 2.4 m that is filled with pure argon under these conditions of temperature and pressure?arrow_forwardWhen washing soda, Na2CO3, reacts with sulfuric acid, H2SO4, the equation is Na2CO3(aq) + H2SO4(aq) CO2(g) + H2O() + Na2SO4(aq) (a) Describe in words the meaning of this chemical equation. (b) Verify that the equation conforms to the law of conservation of matter.arrow_forward
- 3.96 Methyl cyanoacrylate is the chemical name for the substance sold as Super Glue, and it has the chemical formula C5H5NO2. Calculate the number of molecules of this substance in a 1.0-ounce tube of Super Glue, assuming that the glue is 80% methyl cyanoacrylate by mass.arrow_forwardThe present average concentration (mass percent) of magnesium ions in seawater is 0.13%. A chemistry textbook estimates that if 1.00 × 108 tons Mg were taken out of the sea each year, it would take one million years for the Mg concentration to drop to 0.12%. Do sufficient calculations to either verify or refute this statement. Assume that Earth is a sphere with a diameter of 8000 mi, 67% of which is covered by oceans to a depth of 1 mi, and that no Mg is washed back into the oceans at any time.arrow_forwardChlorine exists mainly as two isotopes, 37Cl and 33Cl. Which is more abundant? How do you know?arrow_forward
- Chalky, white crystals in mineral collections are often labeled borax, which has the molecular formula Na2B4O7 10H2O, when actually they are partially dehydrated samples with the molecular formula Na2B4O7 5H2O, which is more stable under the storage conditions. Real crystals of borax are colorless and transparent. (a) Calculate the percent mass that the mineral has lost when it partially dehydrates. (b) Is the percent boron by mass the same in both compounds?arrow_forward4-102 Aspartame, an artificial sweetener used as a sugar substitute in some foods and beverages, has the molecular formula C14H18N2O5. (a) How many mg of aspartame are present in 3.72 × 1026 molecules of aspartame? (b) Imagine you obtain 25.0 mL of aspartame, which is known to have a density of 1.35 g/mL. How many molecules of aspartame are present in this volume? (c) How many hydrogen atoms are present in 1.00 mg of aspartame? (d) Complete the skeletal structure of aspartame, where all the bonded atoms are shown but double bonds, triple bonds, and/or lone pairs are missing. (e) Identify the various types of geometries present in each central atom of aspartame using VSEPR theory. (f) Determine the various relative bond angles associated with each central atom of aspartame using VSEPR theory. (g) What is the most polar bond in aspartame? (h) Would you predict aspartame to be polar or nonpolar? (i) Is aspartame expected to possess resonance? Explain why or why not. (j) Consider the combustion of aspartame, which results in formation of NO2(g) as well as other expected products. Write a balanced chemical equation for this reaction. (k) Calculate the weight of C02(g) that can be prepared from 1.62 g of aspartame mixed with 2.11 g of oxygen gas.arrow_forwardSilicon is produced for the chemical and electronics industries by the following reactions. Give the balanced equation for each reaction. a. SiO2(s)+C(s)arefurnaceElectricSi(s)+CO(g) b. Liquid silicon tetrachloride is reacted with very pure solid magnesium, producing solid silicon and solid magnesium chloride. c. Na2SiF6(s) + Na(s) Si(s) + NaF(s)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 for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher: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 for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry: An Atoms First Approach
Chemistry
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Cengage Learning
Step by Step Stoichiometry Practice Problems | How to Pass ChemistryMole Conversions Made Easy: How to Convert Between Grams and Moles; Author: Ketzbook;https://www.youtube.com/watch?v=b2raanVWU6c;License: Standard YouTube License, CC-BY