Principles of Modern Chemistry
8th Edition
ISBN: 9781305079113
Author: David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 2, Problem 17P
A gaseous binary compound has a vapor density that is 1.94 times that of oxygen at the same temperature and pressure. When 1.39 g of the gas is burned in an excess of oxygen, 1.21 g water is formed, removing all the hydrogen originally present.
(a) Estimate the molecular mass of the gaseous compound.
(b) How many hydrogen atoms are there in a molecule of the compound?
(c) What is the maximum possible value of the
(d) Are other values possible for the atomic mass of the second element? Use a table of atomic masses to identify the element that best fits the data.
(e) What is the molecular formula of the compound?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
In a system with an anodic overpotential, the variation of ŋ as a function of
the current density:
1. at low fields is linear 2. at higher fields, it follows Tafel's law
Find the range of current densities for which the overpotential has the same
value as when calculated for cases 1 and 2 (maximum relative difference of
5% with respect to the behavior for higher fields). To which overpotential
range does this correspond?
Data: 10 = 1.5 mA cm², T = 300°C, ẞ = 0.64, R = 8.314 J K 1 mol¹ and F = 96485
C mol-1.
Indicate 10.6 with only one significant figure.
If I have 10 data points for variables x and y, when I represent y versus x I obtain a line with the equation y = mx + b. Is the slope m equal to dy/dx?
Chapter 2 Solutions
Principles of Modern Chemistry
Ch. 2 - A newly synthesized compound has the molecular...Ch. 2 - Acetaminophen is the generic name of the pain...Ch. 2 - Arrange the following compounds from left to right...Ch. 2 - Arrange the following compounds from left to right...Ch. 2 - “Q-gas” is a mixture of 98.70% helium and 1.30%...Ch. 2 - A pharmacist prepares an antiulcer medicine by...Ch. 2 - Zinc phosphate is used as a dental cement. A...Ch. 2 - Bromoform is 94.85% bromine, 0.40% hydrogen, and...Ch. 2 - Fulgurites are the products of the melting that...Ch. 2 - A sample of a “suboxide” of cesium gives up...
Ch. 2 - Barium and nitrogen form two binary compounds...Ch. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - The empirical formula of a gaseous fluorocarbon is...Ch. 2 - At its boiling point (280°C) and at atmospheric...Ch. 2 - A gaseous binary compound has a vapor density that...Ch. 2 - A gaseous binary compound has a vapor density that...Ch. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - For each of the following chemical reactions,...Ch. 2 - Prob. 22PCh. 2 - An 18.6-g sample of K2CO3 was treated in such a...Ch. 2 - Prob. 24PCh. 2 - Disilane (Si2H6) is a gas that reacts with oxygen...Ch. 2 - Tetrasilane (Si4H10) is a liquid with a density of...Ch. 2 - Cryolite (Na3AlF6) is used in the production of...Ch. 2 - Carbon disulfide (CS2) is a liquid that is used in...Ch. 2 - Potassium nitrate (KNO3) is used as a fertilizer...Ch. 2 - Elemental phosphorus can be prepared from...Ch. 2 - An element X has a dibromide with the empirical...Ch. 2 - An element A has a triiodide with the formula AI3...Ch. 2 - A mixture consisting of only sodium chloride...Ch. 2 - A mixture of aluminum and iron weighing 9.62 g...Ch. 2 - When ammonia is mixed with hydrogen chloride...Ch. 2 - The poisonous gas hydrogen cyanide (HCN) is...Ch. 2 - The iron oxide Fe2O3 reacts with carbon monoxide...Ch. 2 - Titanium dioxide, TiO2 , reacts with carbon and...Ch. 2 - Human parathormone has the impressive...Ch. 2 - A white oxide of tungsten is 79.2976% tungsten by...Ch. 2 - A dark brown binary compound contains oxygen and...Ch. 2 - A binary compound of nickel and oxygen...Ch. 2 - Two binary oxides of the element manganese...Ch. 2 - A possible practical way to eliminate oxides of...Ch. 2 - Aspartame (molecularformula C14H18N2O5 ) is a...Ch. 2 - Prob. 46APCh. 2 - Prob. 47APCh. 2 - Citric acid (C6H8O7) is made by fermentation of...Ch. 2 - Prob. 49APCh. 2 - A sample of a substance with the empirical formula...Ch. 2 - A newspaper article about the danger of global...Ch. 2 - In the Solvay process for producing sodium...Ch. 2 - A yield of 3.00gKClO4 is obtained from the...Ch. 2 - Prob. 54APCh. 2 - Silicon nitride (Si3N4) , a valuable ceramic, is...
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 data for the potential difference of a battery and its temperature are given in the table. Calculate the entropy change in J mol-1 K-1 (indicate the formulas used).Data: F = 96485 C mol-1arrow_forwardIn a cell, the change in entropy (AS) can be calculated from the slope of the E° vs 1/T graph. The slope is equal to -AS/R, where R is the gas constant. Is this correct?arrow_forwardUsing the Arrhenius equation, it is possible to establish the relationship between the rate constant (k) of a chemical reaction and the temperature (T), in Kelvin (K), the universal gas constant (R), the pre-exponential factor (A) and the activation energy (Ea). This equation is widely applied in studies of chemical kinetics, and is also widely used to determine the activation energy of reactions. In this context, the following graph shows the variation of the rate constant with the inverse of the absolute temperature, for a given chemical reaction that obeys the Arrhenius equation. Based on the analysis of this graph and the concepts acquired about the kinetics of chemical reactions, analyze the following statements: I. The activation energy (Ea) varies with the temperature of the system. II. The activation energy (Ea) varies with the concentration of the reactants. III. The rate constant (K) varies proportionally with temperature. IV. The value of the…arrow_forward
- In an electrolytic cell, indicate the formula that relates E0 to the temperature T.arrow_forward-- 14:33 A Candidate Identification docs.google.com 11. Compound A can transform into compound B through an organic reaction. From the structures below, mark the correct one: HO A تھے۔ די HO B ○ A) Compounds A and B are isomers. B) Both have the same number of chiral carbons. C) Compound A underwent an addition reaction of Cl2 and H2O to form compound B. D) Compound A underwent a substitution reaction forming the intermediate chlorohydrin to obtain compound B. E) Compound A underwent an addition reaction of Cl2 forming the chloronium ion and then added methanol to obtain compound B. 60arrow_forward-- 14:40 A Candidate Identification docs.google.com 13. The compound 1-bromo-hex-2-ene reacts with methanol to form two products. About this reaction, mark the correct statement: OCH3 CH3OH Br OCH3 + + HBr A B A) The two products formed will have the same percentage of formation. B) Product B will be formed by SN1 substitution reaction with the formation of an allylic carbocation. C) Product A will be formed by SN1 substitution reaction with the formation of a more stable carbocation than product B. D) Product A will be formed by an SN2 substitution reaction occurring in two stages, the first with slow kinetics and the second with fast kinetics. E) The two compounds were obtained by addition reaction, with compound B having the highest percentage of formation. 57arrow_forward
- -- ☑ 14:30 A Candidate Identification docs.google.com 10. Amoxicillin (figure X) is one of the most widely used antibiotics in the penicillin family. The discovery and synthesis of these antibiotics in the 20th century made the treatment of infections that were previously fatal routine. About amoxicillin, mark the correct one: HO NH2 H S -N. HO Figura X. Amoxicilina A) It has the organic functions amide, ester, phenol and amine. B) It has four chiral carbons and 8 stereoisomers. C) The substitution of the aromatic ring is of the ortho-meta type. D) If amoxicillin reacts with an alcohol it can form an ester. E) The structure has two tertiary amides. 62arrow_forwardThe environmental police of a Brazilian state received a report of contamination of a river by inorganic arsenic, due to the excessive use of pesticides on a plantation on the riverbanks. Arsenic (As) is extremely toxic in its many forms and oxidation states. In nature, especially in groundwater, it is found in the form of arsenate (AsO ₄ ³ ⁻ ), which can be electrochemically reduced to As ⁰ and collected at the cathode of a coulometric cell. In this case, Potentiostatic Coulometry (at 25°C) was performed in an alkaline medium (pH = 7.5 throughout the analysis) to quantify the species. What potential (E) should have been selected/applied to perform the analysis, considering that this is an exhaustive electrolysis technique (until 99.99% of all AsO ₄ ³ ⁻ has been reduced to As ⁰ at the electrode, or n( final) = 0.01% n( initial )) and that the concentration of AsO ₄ ³ ⁻ found in the initial sample was 0.15 mmol/L ? Data: AsO ₄ 3 ⁻ (aq) + 2 H ₂ O ( l ) + 2 e ⁻ → A s O ₂ ⁻ ( a…arrow_forward-- 14:17 15. Water-soluble proteins are denatured when there is a change in the pH of the environment in which they are found. This occurs due to the protonation and deprotonation of functional groups present in their structure. Choose the option that indicates the chemical bonds modified by pH in the protein represented in the following figure. E CH2 C-OH CH2 H₂C H₁C CH CH3 CH3 CH CH₂-S-S-CH₂- 910 H B -CH2-CH2-CH2-CH₂-NH3* −0—C—CH₂- ○ A) A, C e D. • В) Вес ○ C) DeE ○ D) B, De E ○ E) A, B e C 68arrow_forward
- Suppose sodium sulfate has been gradually added to 100 mL of a solution containing calcium ions and strontium ions, both at 0.15 mol/L. Indicate the alternative that presents the percentage of strontium ions that will have precipitated when the calcium sulfate begins to precipitate. Data: Kps of calcium sulfate: 2.4x10 ⁻ ⁵; Kps of strontium sulfate: 3.2x10 ⁻ ⁷ A) 20,2 % B) 36,6 % C) 62,9 % D) 87,5 % E) 98.7%arrow_forward14:43 A Candidate Identification docs.google.com 14. The following diagrams represent hypothetical membrane structures with their components numbered from 1 to 6. Based on the figures and your knowledge of biological membranes, select the correct alternative. | 3 5 || 人 2 500000 6 A) Structures 1, 3, 5, 2 and 4 are present in a constantly fluid arrangement that allows the selectivity of the movement ○ of molecules. Structure 4, present integrally or peripherally, is responsible for this selection, while the quantity of 6 regulates the fluidity. B) The membranes isolate the cell from the environment, but allow the passage of water-soluble molecules thanks to the presence of 2 and 3. The membrane in scheme is more fluid than that in 55arrow_forward12. Mark the correct statement about reactions a and b : a. Br + -OH Br b. + Br H₂O + Br -OH + H₂O A) The reactions are elimination reactions, with reaction "a" being of type E2 and reaction "b" being of type E1. B) Reaction "a" is an E2 type elimination occurring in one step and reaction "b" is an SN1 type substitution. C) Both reactions can result in the formation of carbocation, but in reaction "b" the most stable carbocation will be formed. D) Both reactions occur at the same rate ○ and have the same number of reaction steps. E) Reaction "b" is an E2 type elimination occurring in two steps and reaction "a" is an SN2 type substitution.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
Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Bonding (Ionic, Covalent & Metallic) - GCSE Chemistry; Author: Science Shorts;https://www.youtube.com/watch?v=p9MA6Od-zBA;License: Standard YouTube License, CC-BY
Stoichiometry - Chemistry for Massive Creatures: Crash Course Chemistry #6; Author: Crash Course;https://www.youtube.com/watch?v=UL1jmJaUkaQ;License: Standard YouTube License, CC-BY