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
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Textbook Question
Chapter 6.4, Problem 6.6E
a. Write the thermochemical equation for the reaction described in Exercise 6.5 for the case involving 1 mol N2H4. b. Write the thermochemical equation for the reverse of the reaction described in Exercise 6.5.
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(a) The following synthesis of the molecule shown in the circle has a major problem. What is this problem? (2
pts)
1) HBr
(no peroxides)
2) H-
NaNH2
Br
3) NaNH,
4) CH3Br
5) H2, Pd
(b) Starting with the molecule shown below and any other materials with two carbons or less, write out an
alternate synthesis of the circled molecule. More than one step is needed. Indicate the reagent(s) and the major
product in all the steps in your synthesis. (5 pts)
2024 Fall Term (1) Organic Chemistry 1 (Lec)
CHEM 22204 02[6386] (Hunter College)
(c) Using the same starting material as in part (b) and any other materials win two carpons or less, write out
syntheses of the circled molecules shown below. More than one step is needed in each case. Indicate the
reagent(s) and the major product in all the steps in your synthesis. You may use reactions and products from
your synthesis in part (b). (5 pts)
alt
ons for
Free Response Questions
FRQ 1:
0/5
To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and
some inert materials, solutions with known [Co?) are prepared and absorbance of each of the
solutions is measured at the wavelength of optimum absorbance. The data are used to create a
calibration plot, shown below.
0.90-
0.80-
0.70
0.60
0.50
0.40-
0.30
0.20-
0.10-
0.00-
0.005
0.010
Concentration (M)
0.015
A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted
with water to a final volume of 50.00 ml. Assume that all the cobalt in the ore sample is converted to
Co2+(aq).
a. What is the [Co2] in the solution if the absorbance of a sample of the solution is 0.74?
13
✗
b. Calculate the number of moles of Co2+(aq) in the 50.00 mL solution.
0.008 mols Co
Please correct answer and don't used hand raiting
Chapter 6 Solutions
General Chemistry - Standalone book (MindTap Course List)
Ch. 6.1 - Prob. 6.1ECh. 6.1 - A solar-powered water pump has photovoltaic cells...Ch. 6.2 - A gas is enclosed in a system similar to that...Ch. 6.2 - Prob. 6.2CCCh. 6.3 - Ammonia burns in the presence of a platinum...Ch. 6.3 - Consider the combustion (burning) of methane, CH4,...Ch. 6.4 - A propellant for rockets is obtained by mixing the...Ch. 6.4 - a. Write the thermochemical equation for the...Ch. 6.4 - Prob. 6.3CCCh. 6.5 - How much heat evolves when 10.0 g of hydrazine...
Ch. 6.6 - Iron metal has a specific heat of 0.449 J/(g+ C)....Ch. 6.6 - Suppose 33 mL of 1.20 M HCl is added to 42 mL of a...Ch. 6.7 - Manganese metal can be obtained by reaction of...Ch. 6.7 - Prob. 6.4CCCh. 6.8 - Calculate the heat of vaporization, Hvap, of...Ch. 6.8 - Prob. 6.12ECh. 6.8 - Calculate the standard enthalpy change for the...Ch. 6 - Define energy, kinetic energy, potential energy,...Ch. 6 - Define the joule in terms of SI base units.Ch. 6 - Prob. 6.3QPCh. 6 - Describe the interconversions of potential and...Ch. 6 - Suppose heat flows into a vessel containing a gas....Ch. 6 - Define an exothermic reaction and an endothermic...Ch. 6 - Prob. 6.7QPCh. 6 - Under what condition is the enthalpy change equal...Ch. 6 - Prob. 6.9QPCh. 6 - Why is it important to give the states of the...Ch. 6 - If an equation for a reaction is doubled and then...Ch. 6 - Prob. 6.12QPCh. 6 - Prob. 6.13QPCh. 6 - Describe a simple calorimeter. What measurements...Ch. 6 - Prob. 6.15QPCh. 6 - You discover that you cannot carry out a...Ch. 6 - Prob. 6.17QPCh. 6 - Prob. 6.18QPCh. 6 - Prob. 6.19QPCh. 6 - Prob. 6.20QPCh. 6 - Is the following reaction the appropriate one to...Ch. 6 - Prob. 6.22QPCh. 6 - Prob. 6.23QPCh. 6 - Prob. 6.24QPCh. 6 - The equation for the combustion of 2 mol of butane...Ch. 6 - A 5.0-g sample of water starting at 60.0C loses...Ch. 6 - Hypothetical elements A2 and B2 react according to...Ch. 6 - Consider the following specific heats of metals....Ch. 6 - Thermal Interactions Part 1: In an insulated...Ch. 6 - Enthalpy a A 100.-g sample of water is placed in...Ch. 6 - Chemical reactions are run in each of the beakers...Ch. 6 - Shown below is a diagram depicting the enthalpy...Ch. 6 - A small car is traveling at twice the speed of a...Ch. 6 - The equation for the combustion of butane, C4H10,...Ch. 6 - A 250-g sample of water at 20.0C is placed in a...Ch. 6 - A 20.0-g block of iron at 50.0C and a 20.0 g block...Ch. 6 - Prob. 6.37QPCh. 6 - A block of aluminum and a block of iron, both...Ch. 6 - You have two samples of different metals, metal A...Ch. 6 - Consider the reactions of silver metal, Ag(s),...Ch. 6 - Prob. 6.41QPCh. 6 - A soluble salt, MX2, is added to water in a...Ch. 6 - Methane, CH4, is a major component of marsh gas....Ch. 6 - Hydrogen sulfide, H2S, is produced during...Ch. 6 - Prob. 6.45QPCh. 6 - Prob. 6.46QPCh. 6 - Chlorine dioxide, ClO2, is a reddish yellow gas...Ch. 6 - Nitrous oxide, N2O, has been used as a dental...Ch. 6 - A gas is cooled and loses 82 J of heat. The gas...Ch. 6 - An ideal gas expands isothermally (at constant...Ch. 6 - The process of dissolving ammonium nitrate,...Ch. 6 - The decomposition of ozone, O3, to oxygen, O2, is...Ch. 6 - Nitric acid, a source of many nitrogen compounds,...Ch. 6 - Hydrogen cyanide is used in the manufacture of...Ch. 6 - What is U when 1.00 mol of liquid water vaporizes...Ch. 6 - What is U for the following reaction at 25C?...Ch. 6 - When 1 mol of iron metal reacts with hydrochloric...Ch. 6 - When 2 mol of potassium chlorate crystals...Ch. 6 - When white phosphorus burns in air, it produces...Ch. 6 - Carbon disulfide burns in air, producing carbon...Ch. 6 - Phosphoric acid, H3PO4, can be prepared by the...Ch. 6 - With a platinum catalyst, ammonia will burn in...Ch. 6 - Colorless nitric oxide, NO, combines with oxygen...Ch. 6 - Hydrogen, H2, is used as a rocket fuel. The...Ch. 6 - Ammonia burns in the presence of a copper catalyst...Ch. 6 - Hydrogen sulfide, H2S, is a foul-smelling gas. It...Ch. 6 - Propane, C3H8, is a common fuel gas. Use the...Ch. 6 - Ethanol, C2H5OH, is mixed with gasoline and sold...Ch. 6 - You wish to heat water to make coffee. How much...Ch. 6 - An iron skillet weighing 1.63 kg is heated on a...Ch. 6 - When steam condenses to liquid water, 2.26 kJ of...Ch. 6 - When ice at 0C melts to liquid water at 0C, it...Ch. 6 - When 15.3 g of sodium nitrate, NaNO3, was...Ch. 6 - When 23.6 g of calcium chloride, CaCl2, was...Ch. 6 - A sample of ethanol, C2H5OH, weighing 2.84 g was...Ch. 6 - A sample of benzene, C6H6, weighing 3.51 g was...Ch. 6 - Hydrazine, N2H4, is a colorless liquid used as a...Ch. 6 - Hydrogen peroxide, H2O2, is a colorless liquid...Ch. 6 - Ammonia will burn in the presence of a platinum...Ch. 6 - Hydrogen cyanide is a highly poisonous, volatile...Ch. 6 - Compounds with carboncarbon double bonds, such as...Ch. 6 - Acetic acid, CH3COOH, is contained in vinegar....Ch. 6 - The cooling effect of alcohol on the skin is due...Ch. 6 - Carbon tetrachloride, CCl4, is a liquid used as an...Ch. 6 - Hydrogen sulfide gas is a poisonous gas with the...Ch. 6 - Carbon disulfide is a colorless liquid. When pure,...Ch. 6 - Iron is obtained from iron ore by reduction with...Ch. 6 - The first step in the preparation of lead from its...Ch. 6 - Hydrogen chloride gas dissolves in water to form...Ch. 6 - Carbon dioxide from the atmosphere weathers, or...Ch. 6 - The Group 2A carbonates decompose when heated. For...Ch. 6 - The Group 2A carbonates decompose when heated. For...Ch. 6 - Prob. 6.93QPCh. 6 - Prob. 6.94QPCh. 6 - Liquid hydrogen peroxide has been used as a...Ch. 6 - Hydrogen is an ideal fuel in many respects; for...Ch. 6 - Niagara Falls has a height of 167 ft (American...Ch. 6 - Prob. 6.98QPCh. 6 - When calcium carbonate, CaCO3 (the major...Ch. 6 - Calcium oxide (quicklime) reacts with water to...Ch. 6 - Formic acid, HCHO2, was first discovered in ants...Ch. 6 - Acetic acid, HC2H3O2, is the sour constituent of...Ch. 6 - Suppose you mix 19.8 g of water at 80.0C with 54.7...Ch. 6 - Suppose you mix 23.6 g of water at 66.2C with 45.4...Ch. 6 - A piece of lead of mass 121.6 g was heated by an...Ch. 6 - The specific heat of copper metal was determined...Ch. 6 - A 44.3 g sample of water at 100.00C was placed in...Ch. 6 - A 19.6-g sample of a metal was heated to 61.67C....Ch. 6 - A 21.3-mL sample of 0.977 M NaOH is mixed with...Ch. 6 - A 29.1-mL sample of 1.05 M KOH is mixed with 20.9...Ch. 6 - In a calorimetric experiment, 6.48 g of lithium...Ch. 6 - When 21.45 g of potassium nitrate, KNO3, was...Ch. 6 - A 10.00-g sample of acetic acid, HC2H3O2, was...Ch. 6 - The sugar arabinose, C5H10O5, is burned completely...Ch. 6 - Hydrogen sulfide, H2S, is a poisonous gas with the...Ch. 6 - Ethylene glycol, HOCH2CH2OH, is used as...Ch. 6 - Hydrogen, H2, is prepared by steam reforming, in...Ch. 6 - Hydrogen is prepared from natural gas (mainly...Ch. 6 - Calcium oxide, CaO, is prepared by heating calcium...Ch. 6 - Sodium carbonate, Na2CO3, is used to manufacture...Ch. 6 - Calculate the heat released when 2,395 L O2 with a...Ch. 6 - Prob. 6.122QPCh. 6 - Sucrose, C12H22O11, is common table sugar. The...Ch. 6 - Prob. 6.124QPCh. 6 - Ammonium nitrate is an oxidizing agent and can...Ch. 6 - Prob. 6.126QPCh. 6 - Prob. 6.127QPCh. 6 - Prob. 6.128QPCh. 6 - Prob. 6.129QPCh. 6 - Prob. 6.130QPCh. 6 - Prob. 6.131QPCh. 6 - Prob. 6.132QPCh. 6 - Dry ice is solid carbon dioxide; it vaporizes at...Ch. 6 - Prob. 6.134QPCh. 6 - Prob. 6.135QPCh. 6 - Sulfur dioxide gas reacts with oxygen, O2(g), to...Ch. 6 - When solid iron burns in oxygen gas (at constant...Ch. 6 - Calculate the grams of oxygen gas required to...Ch. 6 - Hydrogen is burned in oxygen to release heat (see...Ch. 6 - Prob. 6.140QPCh. 6 - Prob. 6.141QPCh. 6 - Prob. 6.142QPCh. 6 - You heat 1.000 quart of water from 25.0C to its...Ch. 6 - A piece of iron was heated to 95.4C and dropped...Ch. 6 - The enthalpy of combustion, H, for benzoic acid,...Ch. 6 - Given the following (hypothetical) thermochemical...Ch. 6 - The head of a strike anywhere match contains...Ch. 6 - Toluene C6H5CH3, has an enthalpy of combustion of...Ch. 6 - What will be the final temperature of a mixture...Ch. 6 - What will be the final temperature of a mixture...Ch. 6 - Graphite is burned in oxygen to give carbon...Ch. 6 - A sample of natural gas is 80.0% CH4 and 20.0%...Ch. 6 - Prob. 6.153QPCh. 6 - Prob. 6.154QPCh. 6 - How much heat is released when a mixture...Ch. 6 - How much heat is released when a mixture...Ch. 6 - Consider the Haber process:...Ch. 6 - An industrial process for manufacturing sulfuric...Ch. 6 - The carbon dioxide exhaled in the breath of...Ch. 6 - A rebreathing gas mask contains potassium...Ch. 6 - Prob. 6.161QP
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