Chemistry Atoms First2e
2nd Edition
ISBN: 9781947172647
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 8, Problem 17E
How would the use of a volatile liquid affect the measurement of a gas using open-ended manometers vs. closed-end manometers?
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Question: Find both the b (gradient) and a (y-intercept) value from the list of data below:
(x1 -x̄)
370.5
(y1 - ȳ)
5.240
(x2 - x̄)
142.5
(y2 - ȳ)
2.004
(x3 - x̄)
28.5
(y3 - ȳ)
0.390
(x4 - x̄)
-85.5
(y4 - ȳ)
-1.231
(x5 - x̄)
-199.5
(y5 - ȳ)
-2.829
(x6 - x̄)
-256.5
(y6 - ȳ)
-3.575
Calculating standard reaction free energy from standard reduction...
Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy AG° for the following redox reaction.
Be sure your answer has the correct number of significant digits.
3Cu+ (aq) + Cro²¯ (aq) +4H₂O (1) → 3Cu²+ (aq) +Cr(OH)3 (s)+5OH˜¯ (aq)
0
kJ
☐ x10
00.
18
Ar
Calculating the pH of a weak base titrated with a strong acid
An analytical chemist is titrating 241.7 mL of a 0.4900M solution of methylamine (CH3NH2) with a 0.7800M solution of HNO3. The pK of methylamine is
3.36. Calculate the pH of the base solution after the chemist has added 17.7 mL of the HNO3 solution to it.
Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO3 solution added.
Round your answer to 2 decimal places.
pH
=
☑
?
18
Ar
Chapter 8 Solutions
Chemistry Atoms First2e
Ch. 8 - Why are sharp knives more effective than dull...Ch. 8 - Why do some small bridges have weight limits that...Ch. 8 - Why should you roll or belly-crawl rather than...Ch. 8 - A typical barometric pressure in Redding....Ch. 8 - A typical barometric pressure in Denver, Colorado,...Ch. 8 - A typical barometric pressure in Kansas City is...Ch. 8 - Canadian tire pressure gauges are marked in units...Ch. 8 - Dining the Viking landings on Mars, the...Ch. 8 - The pressure of the atmosphere on the surface of...Ch. 8 - A medical laboratory catalog describes the...
Ch. 8 - Consider this scenario and answer the following...Ch. 8 - Why is it necessary to use a nonvolatile liquid in...Ch. 8 - The pressure of a sample of gas is measured at sea...Ch. 8 - The pressure of a sample of gas is measured with...Ch. 8 - The pressure of a sample of gas is measured at sea...Ch. 8 - The pressure of a sample of gas ¡s measured a sea...Ch. 8 - How would the use of a volatile liquid affect the...Ch. 8 - Sometimes leaving a bicycle in the sun on a hot...Ch. 8 - Explain how the volume of the bubbles exhausted by...Ch. 8 - One way to state Boyle’s law is All other things...Ch. 8 - An alternate way to state Avogadro’s law is A1l...Ch. 8 - How would the graph in Figure 8.12 change if the...Ch. 8 - How would the graph in Figure 8.13 change if the...Ch. 8 - In addition to the data found in Figure 8.13, what...Ch. 8 - Determine the volume of 1 mol of CH4 gas at 150 K...Ch. 8 - Determine the pressure of the gas in the syringe...Ch. 8 - A spray can is used until it is empty except for...Ch. 8 - What is the temperature of an 11.2-L sample of...Ch. 8 - À 2.50-L volume of hydrogen measured at —196 C is...Ch. 8 - A balloon inflated with three breaths of air has a...Ch. 8 - A weather balloon contains 8.80 moles of helium at...Ch. 8 - The volume of an automobile air bag was 66.8 L...Ch. 8 - How many moles of gaseous boron trifluoride, BF3,...Ch. 8 - Iodine, I2, is a solid at room temperature but...Ch. 8 - How many grams of gas are present in each of the...Ch. 8 - A high altitude balloon is filled with 1041104 L...Ch. 8 - A cylinder of medical oxygen has a volume of 3S.4...Ch. 8 - A large scuba tank (Figure 8.16) with a volume of...Ch. 8 - A 20.0-L cylinder containing 11.34 kg of butane,...Ch. 8 - While resting, the average 70-kg human male...Ch. 8 - For a given amount of gas showing ideal behavior,...Ch. 8 - A liter of methane gas, CH4, at STP contains more...Ch. 8 - The effect of chlorofluorocarbons (such as CCl2F2)...Ch. 8 - As 1 g of (lie radioactive element radium decays...Ch. 8 - A balloon with a volume of 100.21 L at 21 C and...Ch. 8 - If the temperature of a fixed amount of a gas is...Ch. 8 - If the volume of a fixed amount of a gas is...Ch. 8 - What is the density of laughing gas, dinitrogen...Ch. 8 - Calculate the density of Freon 12, CF2Cl2, at 30.0...Ch. 8 - Which is denser at the same temperature and...Ch. 8 - A cylinder of O2(g) used in breathing by patients...Ch. 8 - What is the molar mass of a gas if 0.0494 g of the...Ch. 8 - What is the molar mass of a gas if 0.281 g of the...Ch. 8 - How could you show experimentally that the...Ch. 8 - The density of a certain gaseous fluoride of...Ch. 8 - Consider this question: What is the molecular...Ch. 8 - A 36.0—L cylinder of a gas used for calibration of...Ch. 8 - A cylinder of a gas mixture used for calibration...Ch. 8 - A sample of gas isolated from unrefined petroleum...Ch. 8 - A mixture of 0.200 g of 1.00 g of and 0.820 g of...Ch. 8 - Most mixtures of hydrogen gas with oxygen gas are...Ch. 8 - A commercial mercury vapor analyzer can detect in...Ch. 8 - A sample of carbon monoxide was collected over...Ch. 8 - In an experiment in a general chemistry...Ch. 8 - Joseph Priestley first prepared pure oxygen by...Ch. 8 - Cavendish prepared hydrogen in 176G by the novel...Ch. 8 - The chlorofluorocarbon CCl2F2 can be recycled into...Ch. 8 - Automobile air bags are inflated with nitrogen...Ch. 8 - Lime, CaO, is produced by heating calcium...Ch. 8 - Before small batteries were available, carbide...Ch. 8 - Calculate the volume of oxygen required to burn...Ch. 8 - What volume of O2 at STP is required to oxidize...Ch. 8 - Consider the following questions: (a) What is the...Ch. 8 - Methanol, CH3OH, is produced industrially by the...Ch. 8 - What volume of oxygen a 423.0 K and a pressure of...Ch. 8 - A 230-L sample of a colorless gas at STP...Ch. 8 - Ethanol, C2H5OH, is produced industrially from...Ch. 8 - One molecule of hemoglobin will combine with four...Ch. 8 - A sample of a compound of xenon and fluorine was...Ch. 8 - One method of analyzing amino acids is the van...Ch. 8 - A balloon filled with helium gas takes 6 hours to...Ch. 8 - Explain why the numbers of molecules are not...Ch. 8 - Starting with the definition of rate of effusion...Ch. 8 - Heavy water, D2O (molar mass = 20.03 g mol-1). can...Ch. 8 - Which of the following gases diffuse more slowly...Ch. 8 - During the discussion of gaseous diffusion for...Ch. 8 - Calculate the relative rate of diffusion of...Ch. 8 - A gas of unknown identity diffuses at a rate of...Ch. 8 - When two cotton plugs. one moistened with ammonia...Ch. 8 - Using the postulates of the kinetic molecular...Ch. 8 - Can the speed of a given molecule in a gas double...Ch. 8 - Describe what happens o the average kinetic energy...Ch. 8 - The distribution of molecular velocities in a...Ch. 8 - What is the ratio of the average kinetic energy of...Ch. 8 - A 1-L sample of CO initially at STP is heated to...Ch. 8 - The root mean square speed of H2, molecules at 25...Ch. 8 - Answer the following questions: (a) Is the...Ch. 8 - Show that the ratio of the rate of diffusion of...Ch. 8 - Graphs showing the behavior of several different...Ch. 8 - Explain why the plot of PV for CO2 differs from...Ch. 8 - Under which of the following sets of conditions...Ch. 8 - Describe the factors responsible for the deviation...Ch. 8 - For which of the following gases should the...Ch. 8 - A 0.245-L flask contains 0.467 mol CO2 at 159 C....Ch. 8 - Answer the following questions: (a) If XX behaved...
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