homework #10 Acids, Bases, Redox, Molarity, titration 1. Identify each of the following aqueous solutions as strong or weak, and as acid, base, or salt: substance strong or weak acid, base, or salt (example) HCl strong acid NaOH HCH3COO CaCl2 Sr(OH)2 HClO4 2. Write the balanced molecular equation, the complete ionic equation, and the net ionic equation for the reaction of aqueous nitric acid with solid calcium hydroxide. Remember to include states. 3. A solution is prepared by dissolving 0.325 g of Mg(NO3)2 in water to make 150.0 mL of solution. What is the molarity of the solution? 4. A 25.0 mL sample of acetonitrile, CH3CN (d = 0.786 mLg ), is dissolved in enough water to produce 150.0 mL of solution. What is the molarity of acetonitrile in the solution? 5. Folic acid, C19H19N7O6, is important in many biological functions. What mass of folic acid is needed to prepare exactly 10.00 mL of a 0.250 M C19H19N7O6 aqueous solution? 6. A 25.00-mL solution of 0.350 M urea, CO(NH2)2, is diluted to 150.00 mL. What is the new molarity of the solution? 7. What is the oxidation number of the underlined element in: a. NaOH c. H2PO4– b. Na2CO3 d. Cr2O72– 8. For the following oxidation-reduction reactions, indicate which species are reduced and which are oxidized. [These redox reactions are not necessarily balanced—and you don’t need to balance them—just identify the species reduced and the species oxidized.] a. Fe(s) + Cu2+(aq) → Fe2+(aq) + Cu(s) b. VO2+(aq) + MnO4–(aq) → VO2+(aq) + Mn2+(aq) For problems 9 – 13, balance the given redox reactions in acidic solution. For problems 12 and 13 balance the redox reactions in basic solution. 9. S(s) + OCl–(aq) → SO32–(aq) + Cl–(aq) 10. Fe2+(aq) + Cr2O72–(aq) → Fe3+(aq) + Cr3+(aq) 11. S2O32–(aq) + MnO4–(aq) → SO42–(aq) + Mn2+(aq) 12. Fe(OH)3(s) + OCl–(aq) → FeO42–(aq) + Cl–(aq) 13. ClO2(aq) → ClO3–(aq) + Cl–(aq) PSY 540 Short Paper Guidelines and Rubric Learning two or more languages can be beneficial to cognition in several ways. After reading the textbook and the article The Cognitive Benefits of Being Bilingual, sum up some of the major findings of research on being bilingual. For example, what advantages or disadvantages do bilinguals have? Given what you have learned about being bilingual this week, how do you think second language acquisition should be approached? How do you think your approach could increase cognitive function in different professional settings? Be sure to defend your answer with scholarly research. Your paper should include all of the following elements:  A summary of major research findings on being bilingual  A discussion of the advantages and disadvantages of bilingualism  A description of a recommended approach for second language acquisition  An explanation of how your recommended approach could increase cognitive function in diffe ...

1. homework #10
Acids, Bases, Redox, Molarity, titration
1. Identify each of the following aqueous solutions as strong or
weak, and as acid, base, or salt:
substance
strong or weak
acid, base, or salt
(example) HCl
strong
acid
NaOH
HCH3COO
CaCl2
Sr(OH)2
HClO4
2. Write the balanced molecular equation, the complete ionic
equation, and the net ionic equation for the reaction of aqueous
nitric acid with solid calcium hydroxide. Remember to include
states.

2. 3. A solution is prepared by dissolving 0.325 g of Mg(NO3)2 in
water to make 150.0 mL of
solution. What is the molarity of the solution?
4. A 25.0 mL sample of acetonitrile, CH3CN (d = 0.786 mLg ),
is dissolved in enough water to
produce 150.0 mL of solution. What is the molarity of
acetonitrile in the solution?
5. Folic acid, C19H19N7O6, is important in many biological
functions. What mass of folic acid is needed to prepare exactly
10.00 mL of a 0.250 M C19H19N7O6 aqueous solution?
6. A 25.00-mL solution of 0.350 M urea, CO(NH2)2, is diluted
to 150.00 mL. What is the new
molarity of the solution?
7. What is the oxidation number of the underlined element in:
a. NaOH c. H2PO4–
b. Na2CO3 d. Cr2O72–
8. For the following oxidation-reduction reactions, indicate
which species are reduced and which are oxidized. [These
redox reactions are not necessarily balanced—and you don’t
need to balance them—just identify the species reduced and the
species oxidized.]
a. Fe(s) + Cu2+(aq) → Fe2+(aq) + Cu(s)
b. VO2+(aq) + MnO4–(aq) → VO2+(aq) + Mn2+(aq)

3. For problems 9 – 13, balance the given redox reactions in acidic
solution. For problems 12 and 13 balance the redox reactions in
basic solution.
9. S(s) + OCl–(aq) → SO32–(aq) + Cl–(aq)
10. Fe2+(aq) + Cr2O72–(aq) → Fe3+(aq) + Cr3+(aq)
11. S2O32–(aq) + MnO4–(aq) → SO42–(aq) + Mn2+(aq)
12. Fe(OH)3(s) + OCl–(aq) → FeO42–(aq) + Cl–(aq)
13. ClO2(aq) → ClO3–(aq) + Cl–(aq)
PSY 540 Short Paper Guidelines and Rubric
Learning two or more languages can be beneficial to cognition
in several ways. After reading the textbook and the article The
Cognitive Benefits of Being
Bilingual, sum up some of the major findings of research on
being bilingual. For example, what advantages or disadvantages
do bilinguals have? Given what you
have learned about being bilingual this week, how do you think
second language acquisition should be approached? How do you
think your approach could
increase cognitive function in different professional settings?
Be sure to defend your answer with scholarly research.
Your paper should include all of the following elements:

4. ges of
bilingualism
language acquisition
increase cognitive function in different professional settings
olarly research
Guidelines for Submission: 12-point Times New Roman font,
one-inch margins, and APA-formatted citations for all sources
used. The paper should be 3–4
pages, not including references.
Instructor Feedback: This activity uses an integrated rubric in
Blackboard. Students can view instructor feedback in the Grade
Center. For more information,
review these instructions.
Critical Elements Exemplary (100%) Proficient (90%) Needs
Improvement (70%) Not Evident (0%) Value
Research Summary Meets “Proficient” criteria and
identifies patterns and trends
within scholarship on
bilingualism
Summarizes major research
findings on being bilingual

5. References major research
findings on being bilingual, but
does not include a summary
Does not reference major
research findings
20
Advantages and
Disadvantages of
Bilingualism
Meets “Proficient” criteria and
provides specific, concrete
examples from the readings
and scholarly research
Discusses the advantages and
disadvantages of bilingualism
and makes connections to the
readings
Provides incomplete discussion
of the advantages and
disadvantages of bilingualism
Does not discuss the
advantages and disadvantages
of bilingualism
20
Recommended

6. Approach
Meets “Proficient” criteria and
provides specific, concrete
examples of this approach in
practice
Describes a recommended
approach for second language
acquisition and explains why it
is an effective approach
Describes a recommended
approach for second language
acquisition, but does not
explain why it is an effective
approach
Does not describe a
recommended approach for
second language acquisition
20
https://dana.org/Cerebrum/2012/The_Cognitive_Benefits_of_Be
ing_Bilingual/
https://dana.org/Cerebrum/2012/The_Cognitive_Benefits_of_Be
ing_Bilingual/
http://snhu-
media.snhu.edu/files/production_documentation/formatting/rubr
ic_feedback_instructions_student.pdf
Recommended

7. Approach in
Professional Settings
Meets “Proficient” criteria and
provides specific, concrete
examples to illustrate
improvement of cognitive
function in different
professional settings
Explains how the
recommended approach could
increase cognitive function in
different professional settings
Explains how the
recommended approach could
increase cognitive function, but
does not apply explanation to
different professional settings
Does not explain how the
recommended approach could
increase cognitive function
20
Scholarly Research Meets “Proficient” criteria and
provides specific, concrete
examples from research to
defend recommended
approach
Includes references to scholarly
research to defend

8. recommended approach and
connects research findings
directly to recommended
approach
Includes references to scholarly
research to defend
recommended approach, but
does not connect research
findings directly to
recommended approach
Does not include references to
scholarly research to defend
recommended approach
10
Writing
(Mechanics/Citations)
Includes no errors related to
organization, grammar and
style, and APA citations
Includes minor errors related to
organization, grammar and
style, and APA citations
Includes some errors related to
organization, grammar and
style, and APA citations, but
errors do not impede
understanding

9. Major errors related to
organization, grammar and
style, and APA citations impede
understanding of the
submission
10
Earned Total 100%
homework #11
All of the following questions are from Chapter 5:
1. Define each of the following terms:
a. energy
b. work
c. heat
2. What is kinetic energy, and what is the equation, given in
Chapter 5, for kinetic energy?
3. List two different units for energy, give SI units where
appropriate.
4. How is a food “Calorie” different from an energy “calorie”?
5. Restate the first law of thermodynamics in your own words.
6. (4 points) Matching: Place the letter of the correct
definition on the line in front of the given term.
calorimeter a. enthalpy change that accompanies a
reaction

10. endothermic b. heat capacity of one gram of a substance
enthalpy c. E + PV
enthalpy of reaction d. portion not singled out for study
exothermic e. process in which the system absorbs heat
Hess’s Law f. work involved in the compression or
expansion of gas
pressure-volume work g. property of a system determined
by specifying the system’s condition
specific heat h. ∆H for the overall reaction = sum of steps
standard enthalpy change i. portion singled out for
study
state function j. enthalpy change when all substances
are in their standard
states
surroundings k. process in which the system loses heat
system l. device used to measure heat flow
Name
Limiting Reagents
2016 October 3, 4
Pre-Lab: due as you enter the laboratory class.
1. Write the formula for acetic acid, and calculate its molar
mass.

11. 2. Write the formula for sodium bicarbonate, and calculate its
molar mass.
3. Write the complete, balanced molecular equation for the
reaction of acetic acid and sodium bicarbonate—remembering
that carbonic acid is unstable and produces carbon dioxide gas
and water.
4. For the reaction of 2.00 g of acetic acid with 2.00 g of
sodium bicarbonate:
a. What is the total mass of the reactants?
b. According to the law of conservation of mass, what should be
the mass of all products formed, together with all remaining
reactant(s), at the end of the reaction?
c. Consistent with the balanced reaction in question 3, and the
masses in question 4, what is the limiting reactant?
d. Using the limiting reactant found above, calculate the mass
of carbon dioxide formed during this reaction?

12. e. How would this mass of carbon dioxide affect the final mass
of the components after the reaction is complete?
f. Calculate the mass of the remaining reactant and that of the
lingering product(s).