26. Diazepam is the addictive tranquili2 plest formula is CHNOCL Calculate the mass percent of each element in this compound. 27 Deer ticks are known to cause Lyme disease. The presence of DEET (di ethyltoluamide) in insect repellents protects the user from the ticks. The mo- lecular formula for DEET is CHpNO. How many grams of carbon can be obtained from 127 g of DEET? 28. Allicin is responsible for the distinctive taste and odor of garlic. Its sim- ple formula is CHpOS. How many grams of sulfur can be obtained from 25.0 g of allicin? 29. A tablet of Tylenol has a mass of 0.61l g. It contains 251 mg of its ac- tive ingredient, acetaminophen, CH,NO (a) What is the mass percent of acetaminophen in a tablet of Tylenol? (b) Assume that all the nitrogen in the tablet is in the acetaminophen. How many grams of nitrogen are present in a tablet of Tylenol? 30 The active ingredient in some antiperspirants is aluminum chlorohy drate, Al2(OH) Cl. Analysis of a 2.000-g sample of antiperspirant yields 0.334 g of aluminum. What percent (by mass) of aluminum chlorohydrate is pres- ent in the antiperspirant? (Assume that there are no other compounds con- taining aluminum in the antiperspirant.) 31. Combustion analysis of 1.00 g of the male sex hormone, testosterone, yields 2.90 g of CO2 and 0.875 g H,O. What are the mass percents of carbon, hydrogen, and oxygen in testosterone? 32. Hexachlorophene, a compound made up of atoms of carbon, hydrogen, chlorine, and oxygen, is an ingredient in germicidal soaps. Combustion of a LO00-g sample yields 1.407 g of carbon dioxide, 0.134 g of water, and 0.523 g of chlorine gas. What are the mass percents of carbon, hydrogen, oxygen, and chlorine in hexachlorophene? 33 A compound XCl, is 70.3% (by mass) chlorine. What is the molar mass of the compound? What is the symbol and name of X? 34. A compound R,O, is 32.0% oxygen. What is the molar mass of R0? What is the element represented by R? 35 Phosphorus reacts with oxygen to produce different kinds of oxides. One of these oxides is formed when 1.347 gof phosphorus reacts with 1.744 g of oxygen. What is the simplest formula of this oxide? Name the oxide. 36. Nickel reacts with sulfur to form a sulfidn What is uming pared D Lof ad r to
26. Diazepam is the addictive tranquili2 plest formula is CHNOCL Calculate the mass percent of each element in this compound. 27 Deer ticks are known to cause Lyme disease. The presence of DEET (di ethyltoluamide) in insect repellents protects the user from the ticks. The mo- lecular formula for DEET is CHpNO. How many grams of carbon can be obtained from 127 g of DEET? 28. Allicin is responsible for the distinctive taste and odor of garlic. Its sim- ple formula is CHpOS. How many grams of sulfur can be obtained from 25.0 g of allicin? 29. A tablet of Tylenol has a mass of 0.61l g. It contains 251 mg of its ac- tive ingredient, acetaminophen, CH,NO (a) What is the mass percent of acetaminophen in a tablet of Tylenol? (b) Assume that all the nitrogen in the tablet is in the acetaminophen. How many grams of nitrogen are present in a tablet of Tylenol? 30 The active ingredient in some antiperspirants is aluminum chlorohy drate, Al2(OH) Cl. Analysis of a 2.000-g sample of antiperspirant yields 0.334 g of aluminum. What percent (by mass) of aluminum chlorohydrate is pres- ent in the antiperspirant? (Assume that there are no other compounds con- taining aluminum in the antiperspirant.) 31. Combustion analysis of 1.00 g of the male sex hormone, testosterone, yields 2.90 g of CO2 and 0.875 g H,O. What are the mass percents of carbon, hydrogen, and oxygen in testosterone? 32. Hexachlorophene, a compound made up of atoms of carbon, hydrogen, chlorine, and oxygen, is an ingredient in germicidal soaps. Combustion of a LO00-g sample yields 1.407 g of carbon dioxide, 0.134 g of water, and 0.523 g of chlorine gas. What are the mass percents of carbon, hydrogen, oxygen, and chlorine in hexachlorophene? 33 A compound XCl, is 70.3% (by mass) chlorine. What is the molar mass of the compound? What is the symbol and name of X? 34. A compound R,O, is 32.0% oxygen. What is the molar mass of R0? What is the element represented by R? 35 Phosphorus reacts with oxygen to produce different kinds of oxides. One of these oxides is formed when 1.347 gof phosphorus reacts with 1.744 g of oxygen. What is the simplest formula of this oxide? Name the oxide. 36. Nickel reacts with sulfur to form a sulfidn What is uming pared D Lof ad r to
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter8: Chemical Composition
Section: Chapter Questions
Problem 128CP: itamin B12 , cyancobalamin, is essential for human nutrition. Its molecular formula is...
Related questions
Concept explainers
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
Question
Problem 31
Transcribed Image Text:26. Diazepam is the addictive tranquili2
plest formula is CHNOCL Calculate the mass percent of each element in
this compound.
27 Deer ticks are known to cause Lyme disease. The presence of DEET (di
ethyltoluamide) in insect repellents protects the user from the ticks. The mo-
lecular formula for DEET is CHpNO. How many grams of carbon can be
obtained from 127 g of DEET?
28. Allicin is responsible for the distinctive taste and odor of garlic. Its sim-
ple formula is CHpOS. How many grams of sulfur can be obtained from
25.0 g of allicin?
29. A tablet of Tylenol has a mass of 0.61l g. It contains 251 mg of its ac-
tive ingredient, acetaminophen, CH,NO
(a) What is the mass percent of acetaminophen in a tablet of Tylenol?
(b) Assume that all the nitrogen in the tablet is in the acetaminophen.
How many grams of nitrogen are present in a tablet of Tylenol?
30 The active ingredient in some antiperspirants is aluminum chlorohy
drate, Al2(OH) Cl. Analysis of a 2.000-g sample of antiperspirant yields 0.334
g of aluminum. What percent (by mass) of aluminum chlorohydrate is pres-
ent in the antiperspirant? (Assume that there are no other compounds con-
taining aluminum in the antiperspirant.)
31. Combustion analysis of 1.00 g of the male sex hormone, testosterone,
yields 2.90 g of CO2 and 0.875 g H,O. What are the mass percents of carbon,
hydrogen, and oxygen in testosterone?
32. Hexachlorophene, a compound made up of atoms of carbon, hydrogen,
chlorine, and oxygen, is an ingredient in germicidal soaps. Combustion of a
LO00-g sample yields 1.407 g of carbon dioxide, 0.134 g of water, and 0.523 g
of chlorine gas. What are the mass percents of carbon, hydrogen, oxygen, and
chlorine in hexachlorophene?
33 A compound XCl, is 70.3% (by mass) chlorine. What is the molar mass
of the compound? What is the symbol and name of X?
34. A compound R,O, is 32.0% oxygen. What is the molar mass of R0?
What is the element represented by R?
35 Phosphorus reacts with oxygen to produce different kinds of oxides.
One of these oxides is formed when 1.347 gof phosphorus reacts with 1.744 g
of oxygen. What is the simplest formula of this oxide? Name the oxide.
36. Nickel reacts with sulfur to form a sulfidn
What is
uming
pared
D Lof
ad
r to
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
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.Recommended textbooks for you
Introductory Chemistry: A Foundation
Chemistry
ISBN:
9781337399425
Author:
Steven S. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:
9781337399425
Author:
Steven S. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:
9781285199030
Author:
Steven S. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
World of Chemistry, 3rd edition
Chemistry
ISBN:
9781133109655
Author:
Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:
Brooks / Cole / Cengage Learning
Chemistry: Matter and Change
Chemistry
ISBN:
9780078746376
Author:
Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:
Glencoe/McGraw-Hill School Pub Co