CHEMISTRY-MASTERINGCHEMISTRY W/ETEXT
8th Edition
ISBN: 9780135204634
Author: Robinson
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 3.79SP
Sodium azide
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Students have asked these similar questions
LTS
Solid:
AT=Te-Ti
Trial 1
Trial 2
Trial 3
Average
ΔΗ
Mass water, g
24.096
23.976
23.975
Moles of solid, mol
0.01763
001767
0101781
Temp. change, °C
2.9°C
11700
2.0°C
Heat of reaction, J
-292.37J -170.473
-193.26J
AH, kJ/mole
16.58K 9.647 kJ 10.85 kr
16.58K59.64701
KJ
mol
12.35k
Minimum AS,
J/mol K
41.582
mol-k
Remember: q = mCsAT (m = mass of water, Cs=4.184J/g°C) & qsin =-qrxn &
Show your calculations for:
AH in J and then in kJ/mole for Trial 1:
qa (24.0969)(4.1845/g) (-2.9°C)=-292.37J
qsin =
qrxn =
292.35 292.37J
AH in J = 292.375 0.2923kJ
0.01763m01
=1.65×107
AH in kJ/mol =
=
16.58K
0.01763mol
mol
qrx
Minimum AS in J/mol K (Hint: use the average initial temperature of the three trials, con
Kelvin.)
AS=AHIT
(1.65×10(9.64×103) + (1.0
Jimai
For the compound: C8H17NO2
Use the following information to come up with a plausible structure:
8
This compound has "carboxylic acid amide" and ether functional groups.
The peaks at 1.2ppm are two signals that are overlapping one another.
One of the two signals is a doublet that represents 6 hydrogens; the
other signal is a quartet that represents 3 hydrogens.
Vnk the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest bolling
point, choose 2 next to the substance with the next highest boiling point, and so on.
substance
C
D
chemical symbol,
chemical formula
or Lewis structure.
CH,-N-CH,
CH,
H
H 10: H
C-C-H
H H H
Cale
H 10:
H-C-C-N-CH,
Bri
CH,
boiling point
(C)
Сен
(C) B
(Choose
Chapter 3 Solutions
CHEMISTRY-MASTERINGCHEMISTRY W/ETEXT
Ch. 3 - Prob. 3.1PCh. 3 - If blue spheres represent nitrogen atoms and red...Ch. 3 - Prob. 3.3PCh. 3 - APPLY 3.4 The major ingredient in ordinary safety...Ch. 3 - Calculate the molecular weight of sulfuric acid...Ch. 3 - Conceptual APPLY 3.6 Use the structural formula of...Ch. 3 - PRACTICE 3.7 How many moles arc in 5.26 g of...Ch. 3 - APPLY 3.8 When a diabetic experiences low blood...Ch. 3 - PRACTICE 3.9 Aspirin is prepared by reaction...Ch. 3 - APPLY 3.10 Refer to the balanced reaction for the...
Ch. 3 - PRACTICE 3.11 Ethyl alcohol is prepared...Ch. 3 - APPLY 3.12 (a) Diethyl ether (C4H10O), the “ether”...Ch. 3 - Conceptual PRACTICE 3.13 The following diagram...Ch. 3 - Conceptual APPLY 3.14 Draw a diagram similar to...Ch. 3 - Lithium oxide is used aboard the space shuttle to...Ch. 3 - APPLY 3.16 After lithium hydroxide is produced...Ch. 3 - PRACTICE 3.17 What is the empirical formula of the...Ch. 3 - Conceptual APPLY 3.19 Use the structural formula...Ch. 3 - PRACTICE 3.20 Menthol, a flavouring agent obtained...Ch. 3 - PRACTICE 321 Combustion analysis is performed on...Ch. 3 - PRACTICE 3.23 A compound has an empirical formula...Ch. 3 - APPLY 3.24 Combustion analysis was performed on...Ch. 3 - Prob. 3.23PCh. 3 - Match the terms percent yield and percent atom...Ch. 3 - Examine two reactions important in chemical...Ch. 3 - Propene is a raw material for a wide variety of...Ch. 3 - Ibuprofen (the active ingredient in the...Ch. 3 - The original synthesis for ibuprofen, developed in...Ch. 3 - The reaction of A (red spheres) with B (blue...Ch. 3 - The diagrams represent a reaction on the molecular...Ch. 3 - Fluoxetine, marketed as an antidepressant under...Ch. 3 - The following diagram represents the reaction of...Ch. 3 - What is the percent composition of cysteine, one...Ch. 3 - Cytosine, a constituent of deoxyribonucleic acid...Ch. 3 - A hydrocarbon of unknown formula CxHy was...Ch. 3 - Which of the following equations are balanced? (a)...Ch. 3 - Which of the following equations are balanced?...Ch. 3 - Balance the following equations: (a)...Ch. 3 - Balance the following equations: (a) The explosion...Ch. 3 - Balance the following equations: (a)...Ch. 3 - Balance the following equations:...Ch. 3 - Balance the following equations. (a)...Ch. 3 - Balance the following equations. (a) CO(...Ch. 3 - What are the molecular (formula) weights of the...Ch. 3 - What are the formulas of the following substances?...Ch. 3 - What are the molecular weights of the following...Ch. 3 - Prob. 3.47SPCh. 3 - How many grams are in a mole of each of the...Ch. 3 - Prob. 3.49SPCh. 3 - How many moles of ions are in 27.5 g of MgCl2?Ch. 3 - How many moles of anions are in 35.6 g of AlF3?Ch. 3 - What is the molecular weight of chloroform if...Ch. 3 - What is the molecular weight of cholesterol if...Ch. 3 - 3.52 Iron (II) sulfate, FeSO4, is prescribed for...Ch. 3 - Prob. 3.55SPCh. 3 - An average cup of coffee contains about 125 mg of...Ch. 3 - Prob. 3.57SPCh. 3 - A sample that weighs 25.12 g contains 6.0221023...Ch. 3 - Prob. 3.59SPCh. 3 - Prob. 3.60SPCh. 3 - Prob. 3.61SPCh. 3 - In the preparation of iron from hematite, Fe2O3...Ch. 3 - An alternative method for preparing pure iron from...Ch. 3 - Magnesium metal burns in oxygen to form...Ch. 3 - Ethylene gas, C2H4 , reacts with water at high...Ch. 3 - Prob. 3.66SPCh. 3 - Titanium dioxide (TiO2) , the substance used as...Ch. 3 - Prob. 3.68SPCh. 3 - Aluminum reacts with oxygen to yield aluminum...Ch. 3 - The industrial production of hydriodic acid takes...Ch. 3 - An alternative method for producing hydriodic acid...Ch. 3 - Nickel(II) sulfate, used for nickel plating, is...Ch. 3 - Hydrazine, N2H4 , once used as a rocket...Ch. 3 - Assume that you have 1.39 mol of H2 and 3.44 mol...Ch. 3 - Hydrogen and chlorine react to yield hydrogen...Ch. 3 - How many grams of the dry-cleaning solvent...Ch. 3 - How many grams of each product result from the...Ch. 3 - Limestone (CaCO3) reacts with hydrochloric acid...Ch. 3 - Sodium azide (NaN3) yields N2 gas when heated to...Ch. 3 - Acetic acid (CH3CO2H) reacts with isopentyl...Ch. 3 - Cisplatin [Pt( NH 3)2Cl2] , a compound used in...Ch. 3 - If 1.87 g of acetic acid (CH3COOH) reacts with...Ch. 3 - If 3.42 g of K2PtCl4 and 1.61 g of NH3 give 2.08 g...Ch. 3 - The reaction of tungsten hexachloride (WCl6) with...Ch. 3 - Sodium borohydride, NaBH4 , a substance used in...Ch. 3 - Urea, a substance commonly used as a fertilizer,...Ch. 3 - Calculate the mass percent composition of each of...Ch. 3 - What are the empirical formulas of substances with...Ch. 3 - Ferrocene, a substance proposed for use as a...Ch. 3 - What is the empirical formula of stannous...Ch. 3 - What are the empirical formulas of each of the...Ch. 3 - An unknown liquid is composed of 5.57% 11, 28.01 %...Ch. 3 - An unknown liquid is composed of 34.31% C, 5.28%...Ch. 3 - Combustion analysis of 45.62 mg of toluene, a...Ch. 3 - Coniine, a toxic substance isolated from poison...Ch. 3 - Cytochrome c is an iron—containing enzyme found in...Ch. 3 - Nitrogen fixation in the root nodules of peas and...Ch. 3 - Disilane, Si2Hx, is analyzed and found to contain...Ch. 3 - A certain metal sulfide, MS2, is used extensively...Ch. 3 - Combustion analysis of a 31.472 mg sample of the...Ch. 3 - The stimulant amphetamine contains only carbon,...Ch. 3 - Prob. 3.102SPCh. 3 - Prob. 3.103SPCh. 3 - Prob. 3.104SPCh. 3 - Prob. 3.105SPCh. 3 - Prob. 3.106SPCh. 3 - Prob. 3.107SPCh. 3 - Prob. 3.108MPCh. 3 - The molar mass of HCl is 36.5 g/mol, and the...Ch. 3 - Assume that gasoline has the formula C8H18 and has...Ch. 3 - Compound X contains only carbon, hydrogen,...Ch. 3 - Prob. 3.112MPCh. 3 - A certain alcoholic beverage contains only ethanol...Ch. 3 - A mixture of FeO and Fe2O3 with a mass of 10.0 g...Ch. 3 - Prob. 3.115MPCh. 3 - When eaten, dietary carbohydrates are digested to...Ch. 3 - Prob. 3.117MPCh. 3 - Prob. 3.118MPCh. 3 - A mixture of XCl3 and XCl5 weighing 10.00 g...Ch. 3 - Ammonium nitrate, a potential ingredient of...Ch. 3 - Window glass is typically made by mixing soda ash...Ch. 3 - Prob. 3.122MPCh. 3 - Ethylene glycol, commonly used as automobile...Ch. 3 - Prob. 3.124MP
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