Chemistry In Context
9th Edition
ISBN: 9781259638145
Author: Fahlman, Bradley D., Purvis-roberts, Kathleen, Kirk, John S., Bentley, Anne K., Daubenmire, Patrick L., ELLIS, Jamie P., Mury, Michael T., American Chemical Society
Publisher: Mcgraw-hill Education,
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Question
Chapter 4.9, Problem 4.34YT
(a)
Interpretation Introduction
Interpretation:
Whether the mentioned conclusions can be agreed or not has to be explained.
Concept Introduction:
The contribution of the
(b)
Interpretation Introduction
Interpretation:
What is suspected as the cause for the change that is mentioned in the conclusions has to be found.
Concept Introduction:
The contribution of the
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ORT SHEET
Heat of Neutralization
EXPERIMENT
elemsboomfchg lom
12
A. Heat Capacity of Calorimeter
1. Temp. of calorimeter and water before mixing
2. Temp. of warm water
°C
22.0
39,0
30.3
3. Maximum temp. determined from your curve
°C
4. Heat lost by warm water (temp decrease x
°C
50.0 g x 4.184 J/K-g) =
02),
5. Heat gained by cooler water (temp. increase x
50.0 g x 4.184 J/K-g) =
30,3 22.0)x
13626J
s0.0gmpi
S0.0gy
6. Heat gained by the calorimeter [(4) – (5)] =
7. Heat capacity of calorimeter:
heat gained by the calorimeter
temperature increase
J/K
3. Heat of Neutralization of HCl-NaOH
22.2
22.2.
°C
. Temp. of calorimeter and NaOH
Temp. of HCI
AT determined from your curve after adding HC1
°C
to the NaOH
Heat gained by solution (temperature increase x ON
100 g x 4.184 J/K-g) =
9977.8J
%3D
Heat gained by calorimeter (temperature increase x
heat capacity of calorimeter) =
J
%3D
Total joules released by reaction [(3) + (4)] =
Tight O 2018 Pearson Education, Inc.
A student performed a calorimetry experiment to determine the specific heat ofaluminum metal. She did three trials and obtained values of 0.765
J/goC, 0.777 J/goC, and 0.815 J/goC.
a.What was the average specific heat value she obtained? Show your work.
b.What was the standard deviation of her experiments? Show your work.
c.If the theoretical value is 0.900 J/g oC calculate the percent error using your average value found in part a as the experimental value. Show your work.
d.What do your answers to parts b and c tell you about the precision and
accuracy of this experiment? Explain your answer.
Chapter 4 Solutions
Chemistry In Context
Ch. 4.1 - You Decide What Do You Know About the Big C? In...Ch. 4.1 - Prob. 4.3YTCh. 4.1 - Prob. 4.4YTCh. 4.1 - Skill Building Polyatomic Ions II Name each of...Ch. 4.1 - Prob. 4.6YTCh. 4.2 - Prob. 4.7YTCh. 4.2 - Prob. 4.8YTCh. 4.3 - Skill Building Isotopes of Nitrogen Nitrogen (N2)...Ch. 4.3 - You Decide Marshmallows and Pennies Avogadros...Ch. 4.3 - Skill Building Calculating the Mass of Atoms...
Ch. 4.4 - Prob. 4.12YTCh. 4.4 - Prob. 4.13YTCh. 4.4 - Prob. 4.14YTCh. 4.4 - You Decide Checking Carbon from Cars A...Ch. 4.5 - Skill Building Light from the Sun Refresher In...Ch. 4.5 - Prob. 4.17YTCh. 4.6 - You Decide Evaporating Coal Mines Writing in the...Ch. 4.6 - Prob. 4.19YTCh. 4.6 - Prob. 4.20YTCh. 4.6 - Prob. 4.21YTCh. 4.7 - Skill Building MethaneFlat or Tetrahedral? a. If...Ch. 4.7 - Prob. 4.23YTCh. 4.7 - Skill Building Predicting Molecular Shapes, Part 2...Ch. 4.8 - Skill Building How Will a Molecule Stretch? For...Ch. 4.8 - Scientific Practices Greenhouse Gas Spectra a. Use...Ch. 4.8 - Scientific Practices Greenhouse Gas Spectra We...Ch. 4.8 - Prob. 4.28YTCh. 4.9 - Prob. 4.29YTCh. 4.9 - Prob. 4.30YTCh. 4.9 - Prob. 4.31YTCh. 4.9 - Prob. 4.32YTCh. 4.9 - Prob. 4.33YTCh. 4.9 - Prob. 4.34YTCh. 4.9 - Prob. 4.35YTCh. 4.9 - Prob. 4.36YTCh. 4.9 - Prob. 4.37YTCh. 4.10 - Prob. 4.38YTCh. 4.10 - Prob. 4.39YTCh. 4.10 - Prob. 4.40YTCh. 4.10 - Prob. 4.41YTCh. 4.11 - For each of the conclusions presented in Table...Ch. 4.11 - Prob. 4.43YTCh. 4.11 - Prob. 4.44YTCh. 4.12 - Skill Building Footprint Calculations Investigate...Ch. 4.12 - Scientific Practices Your Personal Share of the...Ch. 4.12 - Prob. 4.47YTCh. 4.12 - Prob. 4.48YTCh. 4.12 - Prob. 4.49YTCh. 4.12 - Prob. 4.50YTCh. 4.12 - You Decide Climate Change Insurance? Mitigation of...Ch. 4.12 - Prob. 4.52YTCh. 4.12 - You Decide The Big Question Revisited Answer these...Ch. 4 - i. Earth has increased in temperature by 6 C (10.8...Ch. 4 - The chapter concluded with a quote from John...Ch. 4 - Prob. 2QCh. 4 - Prob. 3QCh. 4 - Prob. 5QCh. 4 - a. It is estimated that 29 megajoules per square...Ch. 4 - Consider Figure 4.23. a. How does the present...Ch. 4 - Understanding Earths energy balance is essential...Ch. 4 - Explain each of these observations. a. A car...Ch. 4 - Prob. 10QCh. 4 - Draw the Lewis structure and name the molecular...Ch. 4 - Draw the Lewis structure and name the molecular...Ch. 4 - a. Draw the Lewis structure for methanol (wood...Ch. 4 - a. Draw the Lewis structure for ethene (ethylene),...Ch. 4 - Prob. 15QCh. 4 - Prob. 16QCh. 4 - Prob. 17QCh. 4 - Prob. 18QCh. 4 - Termites possess enzymes that allow them to break...Ch. 4 - Consider Figure 4.4. a. Which sector has the...Ch. 4 - Silver has an atomic number of 47. a. Give the...Ch. 4 - Silver only has two naturally occurring isotopes:...Ch. 4 - a. Calculate the average mass in grams of an...Ch. 4 - Prob. 24QCh. 4 - Prob. 25QCh. 4 - The total mass of carbon in living systems is...Ch. 4 - Prob. 27QCh. 4 - Give the number of protons, neutrons, and...Ch. 4 - Give the symbol showing the atomic number and the...Ch. 4 - Prob. 30QCh. 4 - The Arctic has been called our canary in the coal...Ch. 4 - Do you think the comment made in the cartoon is...Ch. 4 - Prob. 33QCh. 4 - Prob. 34QCh. 4 - Over the last 20 years, about 120 billion tons of...Ch. 4 - Prob. 36QCh. 4 - Prob. 37QCh. 4 - Prob. 38QCh. 4 - Ethanol, C2H5OH, can be produced from sugars and...Ch. 4 - Prob. 40QCh. 4 - Prob. 41QCh. 4 - Prob. 42QCh. 4 - Prob. 43QCh. 4 - Prob. 44QCh. 4 - Prob. 45QCh. 4 - Prob. 46QCh. 4 - Prob. 47QCh. 4 - Prob. 48QCh. 4 - Former vice president Al Gore writes in his 2006...Ch. 4 - Prob. 50QCh. 4 - Prob. 51QCh. 4 - Data taken over time reveal an increase in CO2 in...Ch. 4 - In the energy industry, 1 standard cubic foot...Ch. 4 - Prob. 54QCh. 4 - A solar oven is a low-tech, low-cost device for...Ch. 4 - In 2005, the European Union adopted a...
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