INTOR TO CHEMISTRY LLF
5th Edition
ISBN: 9781264501731
Author: BAUER
Publisher: MCG
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Textbook Question
Chapter 4, Problem 54QP
How many formula units are in 375.0 g of the following substances?
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Using the conditions of spontaneity to deduce the signs of AH and AS
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy
AS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
reaction
observations
conclusions
A
This reaction is always spontaneous, but
proceeds slower at temperatures above
120. °C.
ΔΗ is
(pick one)
AS is
(pick one)
ΔΗ is
(pick one)
B
This reaction is spontaneous except above
117. °C.
AS is
(pick one)
ΔΗ is
(pick one)
This reaction is slower below 20. °C than
C
above.
AS is
|(pick one)
?
18
Ar
1
Calculating the pH at equivalence of a titration
Try Again
Your answer is incorrect.
0/5
a
A chemist titrates 70.0 mL of a 0.7089 M hydrocyanic acid (HCN) solution with 0.4574M KOH solution at 25 °C. Calculate the pH at equivalence. The pK of
hydrocyanic acid is 9.21.
Round your answer to 2 decimal places.
Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added.
pH
=
11.43]
G
00.
18
Ar
B•
Biological Macromolecules
Naming and drawing the products of aldose oxidation and reduction
aw a Fischer projection of the molecule that would produce L-ribonic acid if it were subjected to mildly oxidizing reaction conditions.
Click and drag to start drawing a
structure.
X
AP
‡
1/5
Naor
Explanation
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Chapter 4 Solutions
INTOR TO CHEMISTRY LLF
Ch. 4 - Prob. 1QCCh. 4 - Prob. 2QCCh. 4 - Prob. 3QCCh. 4 - Prob. 4QCCh. 4 - Prob. 1PPCh. 4 - Prob. 2PPCh. 4 - Prob. 3PPCh. 4 - Prob. 4PPCh. 4 - Prob. 5PPCh. 4 - Prob. 6PP
Ch. 4 - Prob. 7PPCh. 4 - Prob. 8PPCh. 4 - Prob. 9PPCh. 4 - Prob. 10PPCh. 4 - Prob. 11PPCh. 4 - Prob. 12PPCh. 4 - Prob. 13PPCh. 4 - Prob. 14PPCh. 4 - Prob. 15PPCh. 4 - Prob. 16PPCh. 4 - Prob. 17PPCh. 4 - Prob. 18PPCh. 4 - Prob. 19PPCh. 4 - Prob. 20PPCh. 4 - Prob. 21PPCh. 4 - Prob. 22PPCh. 4 - Prob. 23PPCh. 4 - Prob. 1QPCh. 4 - Prob. 2QPCh. 4 - Prob. 3QPCh. 4 - Prob. 4QPCh. 4 - Prob. 5QPCh. 4 - Prob. 6QPCh. 4 - Lithium carbonate, Li2CO3 , contains 18.8 lithium...Ch. 4 - Prob. 8QPCh. 4 - Prob. 9QPCh. 4 - Prob. 10QPCh. 4 - Prob. 11QPCh. 4 - Prob. 12QPCh. 4 - Prob. 13QPCh. 4 - Prob. 14QPCh. 4 - Prob. 15QPCh. 4 - Prob. 16QPCh. 4 - Prob. 17QPCh. 4 - Prob. 18QPCh. 4 - Prob. 19QPCh. 4 - Prob. 20QPCh. 4 - Prob. 21QPCh. 4 - Prob. 22QPCh. 4 - Prob. 23QPCh. 4 - Prob. 24QPCh. 4 - Prob. 25QPCh. 4 - Prob. 26QPCh. 4 - Prob. 27QPCh. 4 - Calculate the molar mass of each of the following...Ch. 4 - Prob. 29QPCh. 4 - Prob. 30QPCh. 4 - Prob. 31QPCh. 4 - Prob. 32QPCh. 4 - Prob. 33QPCh. 4 - Prob. 34QPCh. 4 - Prob. 35QPCh. 4 - Prob. 36QPCh. 4 - Prob. 37QPCh. 4 - Prob. 38QPCh. 4 - Prob. 39QPCh. 4 - Prob. 40QPCh. 4 - Prob. 41QPCh. 4 - Prob. 42QPCh. 4 - Prob. 43QPCh. 4 - Calculate the mass of 0.750 mol of the following...Ch. 4 - Prob. 45QPCh. 4 - Prob. 46QPCh. 4 - A sample of ammonia, NH3 , weights 30.0 g....Ch. 4 - Prob. 48QPCh. 4 - Which of these substance has the most atoms per...Ch. 4 - Which of these substances has the atoms per mole?...Ch. 4 - A raindrop weighs 0.050 g. How many molecules of...Ch. 4 - A gain of sand weighs 7.7104g . How many formula...Ch. 4 - How many formula units are in 250.0 g of the...Ch. 4 - How many formula units are in 375.0 g of the...Ch. 4 - How many atoms (or ions) of each element are in...Ch. 4 - How many atoms (or ions) of each element are in...Ch. 4 - What is the mass of 6.41022 molecules of SO2?Ch. 4 - What is the mass of 1.81021 molecules of H2SO4?Ch. 4 - Which compound, NH3,NH4Cl,NO2,orN203, contains the...Ch. 4 - Which compound, NaCl,PC13,CaC12,orHCIO2, contains...Ch. 4 - You have two colorless gases, each made of sulfur...Ch. 4 - Describe some uses for the percent composition of...Ch. 4 - What is the difference between an empirical...Ch. 4 - Why do we normally use an empirical formula...Ch. 4 - Which of the following molecules have an empirical...Ch. 4 - Which of the following substances have an...Ch. 4 - Prob. 67QPCh. 4 - What is the empirical formula of each of the...Ch. 4 - Prob. 69QPCh. 4 - Prob. 70QPCh. 4 - Which of the following compounds of nitrogen and...Ch. 4 - Which of the following compounds of carbon and...Ch. 4 - What are the empirical formulas of the compounds...Ch. 4 - What are the empirical formulas of the compounds...Ch. 4 - Eugenol, a chemical substance with the flavor of...Ch. 4 - One of the compounds in cement has the following...Ch. 4 - The explosive trinitrotoluene (TNT) has the...Ch. 4 - Strychnine (rat poison) has the composition...Ch. 4 - An unknown organic compound was determined to have...Ch. 4 - Prob. 80QPCh. 4 - Prob. 81QPCh. 4 - Prob. 82QPCh. 4 - Prob. 83QPCh. 4 - Prob. 84QPCh. 4 - Prob. 85QPCh. 4 - Prob. 86QPCh. 4 - What is the percent composition of each of the...Ch. 4 - Prob. 88QPCh. 4 - Prob. 89QPCh. 4 - Prob. 90QPCh. 4 - Prob. 91QPCh. 4 - Prob. 92QPCh. 4 - Prob. 93QPCh. 4 - Prob. 94QPCh. 4 - Prob. 95QPCh. 4 - Prob. 96QPCh. 4 - Prob. 97QPCh. 4 - Prob. 98QPCh. 4 - Prob. 99QPCh. 4 - Prob. 100QPCh. 4 - Prob. 101QPCh. 4 - Prob. 102QPCh. 4 - Prob. 103QPCh. 4 - Prob. 104QPCh. 4 - Prob. 105QPCh. 4 - Prob. 106QPCh. 4 - Prob. 107QPCh. 4 - Prob. 108QPCh. 4 - Prob. 109QPCh. 4 - Prob. 110QPCh. 4 - Prob. 111QPCh. 4 - Prob. 112QPCh. 4 - Prob. 113QPCh. 4 - Prob. 114QPCh. 4 - Prob. 115QPCh. 4 - Prob. 116QPCh. 4 - Prob. 117QPCh. 4 - How many molecules are present in 15.43 g of butyl...Ch. 4 - Prob. 119QPCh. 4 - Prob. 120QPCh. 4 - Prob. 121QPCh. 4 - Prob. 122QPCh. 4 - Prob. 123QPCh. 4 - Prob. 124QPCh. 4 - Prob. 125QPCh. 4 - Prob. 126QPCh. 4 - Prob. 127QPCh. 4 - Prob. 128QPCh. 4 - Prob. 129QPCh. 4 - Prob. 130QPCh. 4 - Prob. 131QPCh. 4 - Prob. 132QPCh. 4 - Prob. 133QPCh. 4 - Prob. 134QPCh. 4 - Prob. 135QPCh. 4 - Prob. 136QPCh. 4 - Prob. 137QPCh. 4 - Prob. 138QPCh. 4 - Prob. 139QPCh. 4 - Prob. 140QPCh. 4 - Prob. 141QPCh. 4 - Prob. 142QPCh. 4 - Prob. 143QPCh. 4 - Prob. 144QPCh. 4 - Prob. 145QPCh. 4 - Prob. 146QPCh. 4 - Prob. 147QPCh. 4 - Prob. 148QPCh. 4 - Prob. 149QPCh. 4 - Prob. 150QPCh. 4 - Prob. 151QPCh. 4 - Prob. 152QP
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