Please show ALL work. If written please show with neat handwriting. I will rate! Thank You!
Sketch a realistic titration curve for the following situation. For last name starting: A-L Titrate 20.00 mL of 0.300 M morpholine with 0.200 M HCl M-O Titrate 10.00 mL of 0.300 M sodium 4-nitrophenolate with 0.100 M HCI P-Z Titrate 30.00 mL of 0.100 M sodium cyanide with 0.200 M HOI You should show proof of some specific points in the titration curve. i) initial pH ii) pH at 9.00 mL addition i) pH at the equiv. point iv) pH at 2.00 mL past the equiv. pt.
Solution
Titration
Morpholine with HCl
i) initial pH
[morpholine] = 0.3 M
morpholine + H2O <==> morpholineH+ + OH-
let x amount hydrolyzed
Kb = [morpholineH+][OH-]/[morpholine]
2.5 x 10^-6 = x^2/0.3
x = [OH-] = 8.7 x 10^-4 M
[H+] = 1 x 10^-14/8.7 x 10^-4 = 1.15 x 10^-11 M
pH = -log[H+] = 10.94
ii) 9.0 ml HCl added
moles morpholine = 0.3 M x 20 ml = 6 mmol
moles HCl = 0.2 M x 9 ml = 1.8 mmol
morpholineH+ formed = 1.8 mmol
morpholine remained = 6-1.8 = 4.2 mmol
pH = pKa + log(morpholine/morpholneH+)
= 8.4 + log(4.2/1.8)
= 8.77
iii) pH at equivalence point
volume HCl added = 6 mmol/0.2 M = 30 ml
[morpholineH+] formed = 6 mmo/50 ml = 0.12 M
morpholineH+ + H2O <==> morpholine + H3O+
let x amount hydrolyzed
Ka = [morpholine][H3O+]/[morpholineH+]
4 x 10^-9 = x^2/0.12
x = [H3O+] = 2.2 x 10^-5 M
pH = -log[H3O+] = 4.66
iv) pH at 2 ml past equivalence point
excess [HCl] = [H+] = 0.2 M x 2 ml/52 ml = 0.008 M
pH = -log(0.008) = 2.11
v) pH at half-equivalence point
[morpholineH+] formed = [morpholine] remained
pH = pKa = 8.4
Plot,
volume HCl on x-axis and pH on y-axis
.
50mL of a 0.1000 M aqueous solution of hydrazoic acid (HN3, Ka=1.91.pdffedosys
50mL of a 0.1000 M aqueous solution of hydrazoic acid (HN3, Ka=1.9*10^-5) is titrated with a
0.1000M solution of sodium Hydroxide. Calculate the pH at the following points a. Before
Titration b. After the addition of 5.00mL of NaOH c. After the addition of 25.00mL of NaOH d.
After the addition of 50.00mL of NaOH e. After the addition of 5.00mL of NaOH
Solution
HN3+ NaOH--> NaN3 +H2O
mini moles of HN3=5
ka=Ka=1.9*10^-5
pka=4.72
a) ph before addition
before addition only weak acid is present
alpha=sqrt(ka/c)
=1.37*10^-2
c.alpha= [H+]= 1.37*10^-3
ph=2.86
b) after addition of 5 ml
mini moles of naoh added=0.5
ph=4.72+log(0.5/(5-0.5))
ph=3.76
c) after addition of 25 ml Naoh
ph=4.72+log(2.5/(5-2.5))
ph=4.72
d)after addition of 50 ml
now this is equivalence point.
Here N1v1=N2v2
here salt hydrolysis will take place
N3- +H2O <=> HN3+OH-
pOH=1/2(pKw-pKa-logC)
C= 5/(50+50)
=1/20M
pOH=1/2(14-4.72+1.30)
=5.29
ph=8.71.
50mL of a 0.1000 M aqueous solution of hydrazoic acid (HN3, Ka=1.91.pdffedosys
50mL of a 0.1000 M aqueous solution of hydrazoic acid (HN3, Ka=1.9*10^-5) is titrated with a
0.1000M solution of sodium Hydroxide. Calculate the pH at the following points a. Before
Titration b. After the addition of 5.00mL of NaOH c. After the addition of 25.00mL of NaOH d.
After the addition of 50.00mL of NaOH e. After the addition of 5.00mL of NaOH
Solution
HN3+ NaOH--> NaN3 +H2O
mini moles of HN3=5
ka=Ka=1.9*10^-5
pka=4.72
a) ph before addition
before addition only weak acid is present
alpha=sqrt(ka/c)
=1.37*10^-2
c.alpha= [H+]= 1.37*10^-3
ph=2.86
b) after addition of 5 ml
mini moles of naoh added=0.5
ph=4.72+log(0.5/(5-0.5))
ph=3.76
c) after addition of 25 ml Naoh
ph=4.72+log(2.5/(5-2.5))
ph=4.72
d)after addition of 50 ml
now this is equivalence point.
Here N1v1=N2v2
here salt hydrolysis will take place
N3- +H2O <=> HN3+OH-
pOH=1/2(pKw-pKa-logC)
C= 5/(50+50)
=1/20M
pOH=1/2(14-4.72+1.30)
=5.29
ph=8.71.
The mutual fund industry is beginning to use the Internet to dissemina.docxkdavid658
The mutual fund industry is beginning to use the Internet to disseminate fund information and effect fund transactions. The Internet also makes it much easier for savers to obtain information about individual securities and much cheaper to trade these securities. As the Internet develops, will savers make their investment directly in individual securities rather through financial intermediaries such as mutual funds?
Solution
A financial intermediary is an institution or individual that serves as a conduit for parties in a financial transaction. They act as go-betweens by holding a portfolio of assets and issuing claims based on that portfolio, various informations regarding that portfolio to savers. Typically speaking these financial intermediaries are institutions that facilitates the channeling of funds between lenders and borrowers indirectly . In the climate of finance and development, financial intermediaries generally refer to private sector intermediaries, such as banks, mutual funds, private equity, venture capital funds, leasing companies, insurance and pension funds.
Financial intermediaries not only work as the intermediate agent on commission base, but will contribute valuables to the savers. They help the individual saver to judge the security by going through a deep analysis regarding the security.
So, it will not a good act to do investment directly in individual securities rather through financial intermediaries such as mutual funds.
.
The primary tool for hardening symmetric cryptography is public key in.docxkdavid658
The primary tool for hardening symmetric cryptography is public key infrastructure.
Select one:
True
False
ABC Corp recently released a new version of their Web-based inventory management software. Unfortunately a bug in their code was discovered that would allow an attacker to take full control of the host Web server. In information security this is considered to be a(n)
Select one:
a. flaw
b. weakness
c. vulnerability
d. exploit
Solution
The primary tool for hardening symmetric cryptography is public key infrastructure.
Select one:
True
False
ABC Corp recently released a new version of their Web-based inventory management software. Unfortunately a bug in their code was discovered that would allow an attacker to take full control of the host Web server. In information security this is considered to be a(n)
Select one:
a. flaw
b. weakness
c. vulnerability
d. exploit
.
the primary function of the skin the primary function of the skin.docxkdavid658
the primary function of the skin
the primary function of the skin
the primary function of the skin
Solution
Skin
Basically in terms of computer skin refers to visual effects either on the operating system(task bar, menu bar, background , themes), websites,applications.
Main and primary functions of the skin are:
1). To provide a better look and feel.
2). To provide easy access to different tools or applicatons.
3). generally to provide better look and feel to the website we uses HTML and CSS (cascading style sheets(internal, external, inline).
4).For standalone software interfaces, it is implemented by XML (used to create user defined tags )and XSLT.
5). In terms of applications skin plays an important roles like in various media players (winamp, trillion etc), as well as in instant messaging clients.
Software skins
Software which provide skin applied is referred to as being skinnable, and the process of using or applying such a skin is known as skinning.
6).In terms of computer vision human skin used as a biometric tool like Face recognition, people tracking, fingerprint identifications.
7).In terms of computer graphics skin are used as
a) animation
b) geometric modeling
c) photorealistic rendering.
.
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The mutual fund industry is beginning to use the Internet to dissemina.docxkdavid658
The mutual fund industry is beginning to use the Internet to disseminate fund information and effect fund transactions. The Internet also makes it much easier for savers to obtain information about individual securities and much cheaper to trade these securities. As the Internet develops, will savers make their investment directly in individual securities rather through financial intermediaries such as mutual funds?
Solution
A financial intermediary is an institution or individual that serves as a conduit for parties in a financial transaction. They act as go-betweens by holding a portfolio of assets and issuing claims based on that portfolio, various informations regarding that portfolio to savers. Typically speaking these financial intermediaries are institutions that facilitates the channeling of funds between lenders and borrowers indirectly . In the climate of finance and development, financial intermediaries generally refer to private sector intermediaries, such as banks, mutual funds, private equity, venture capital funds, leasing companies, insurance and pension funds.
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So, it will not a good act to do investment directly in individual securities rather through financial intermediaries such as mutual funds.
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The primary tool for hardening symmetric cryptography is public key infrastructure.
Select one:
True
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ABC Corp recently released a new version of their Web-based inventory management software. Unfortunately a bug in their code was discovered that would allow an attacker to take full control of the host Web server. In information security this is considered to be a(n)
Select one:
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The primary tool for hardening symmetric cryptography is public key infrastructure.
Select one:
True
False
ABC Corp recently released a new version of their Web-based inventory management software. Unfortunately a bug in their code was discovered that would allow an attacker to take full control of the host Web server. In information security this is considered to be a(n)
Select one:
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the primary function of the skin the primary function of the skin.docxkdavid658
the primary function of the skin
the primary function of the skin
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Solution
Skin
Basically in terms of computer skin refers to visual effects either on the operating system(task bar, menu bar, background , themes), websites,applications.
Main and primary functions of the skin are:
1). To provide a better look and feel.
2). To provide easy access to different tools or applicatons.
3). generally to provide better look and feel to the website we uses HTML and CSS (cascading style sheets(internal, external, inline).
4).For standalone software interfaces, it is implemented by XML (used to create user defined tags )and XSLT.
5). In terms of applications skin plays an important roles like in various media players (winamp, trillion etc), as well as in instant messaging clients.
Software skins
Software which provide skin applied is referred to as being skinnable, and the process of using or applying such a skin is known as skinning.
6).In terms of computer vision human skin used as a biometric tool like Face recognition, people tracking, fingerprint identifications.
7).In terms of computer graphics skin are used as
a) animation
b) geometric modeling
c) photorealistic rendering.
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The primary difference between seasonality and cycles is- the duration.docxkdavid658
The primary difference between seasonality and cycles is?
the duration of the repeating patterns
the magnitude of the variation
the ability to attribute the pattern to a cause
the direction of the movement
there are only 4 seasons but 30 cycles
Solution
answer is the duration of the repeating patterns
explaination:
Cycles are wavelike variation of more than one year\'s duration (long term). There are often related to a variety of economic, political, and even agricultural conditions.
Seasonality refers to short-term, fairly variations generally related to factors such as the calendar or time of day. For example, restaurants, supermarkets, and theaters experience weekly and even daily \"seasonal\" variations.
In one word, cycles are up-and-down movements similar to seasonal variation but of long duration-say, two to six years between peaks.
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The pointer in a node points to
the data part of a node
the count part of a node
the pointer part of the node
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Solution
* The pointer in a node points to ...
D . The whole node.
Explanation :-
* A Linked List is a linear collection of data elements, called nodes, pointing to the next node by means of a pointer.
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The nucleus of a 15 a distance of 5-4 x 10-11 m- What is the ratio of.docxkdavid658
The nucleus of a 15 a distance of 5.4 x 10-11 m. What is the ratio of the density of the hydrogen nucleus to the density of the complete hydrogen atom? Section 30.1 10 30.P energy as a ground-state For a doubly ionized lithium atom Li2+ (z - 3), what is the principal quantum number of the state in which the electron has the same total Section 30.3 CJ10 36 P010
Solution
2) First find density of proton
mass of proton = 1.67e-27
V = 4/3*pi*r 3 = 4/3*pi*(1.7e-15) 3 = 2.0579e-44 m 3
density = mass / volume = 1.67e-27 / 2.0579e-44
density = 8.115e16 kg/m 3
Mass of hydrogen atom = 1.67e-27
V = 4/2*pi*(5.4e-11) 3 = 6.596e-31 m 3
density = 1.67e-27 / 6.596e-31
density = 2531.9 kg/m3
Ratio =Â Â 8.115e16 / 2531.9
Ratio = 3.205e13
3) n 2 (Li) = (n 2 / Z 2 ) Hydrogen * Z 2 (Li)
for ground state, n and z = 1 for hydrogen
n 2 = 1*3 2 = 9
n (Li) = 3
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The main function of a cell membrane is to allow substances to enter a.docxkdavid658
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a. Diffusion, or passive transport, occurs when molecules diffuse from a lower concentration to a higher concentration.
b. Facilitated transport occurs when proteins that extend through the cell membrane provide a channel through which certain substances can diffuse more rapidly than by passive diffusion.
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Solution
Option b tends to be the appropriate answer for cell membrane function.
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Solution
10
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Please only answer if you know the answer- I have posted this twice an.docxkdavid658
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At April 30, partners\' capital balances in PDL Company are: G. Donley $51,400, C. Lamar $50,100, and J. Pinkston $15,200. The income sharing ratios are 5 4: 1, respectively. On May 1, the PDLT Company is formed by admitting ·Terrell to the firm as a partner Journalize the admission of Terrell under each of the following independent assumptions. (Credit account titles are automatically indented when amount is entered. Do not indent manually.) (1) (2) (3) (4) Terrell purchases 50% of Pinkston\'s ownership interest by paying Pinkston $16,140 in cash. Terrell purchases 331/3% of Lamar\'s ownership interest by paying Lamar $15,450 in cash. Terrell invests $63,100 for a 30% ownership interest, and bonuses are given to the old partners Terrell invests $43,500 for a 30% ownership interest, which includes a bonus to the new partner No. Account Titles and Explanation Debit Credit 1. 2. 3. Lamar\'s capital balance is $31,570 after admitting Terrell to the partnership by investment. If Lamar\'s ownership interest is 20% of total partnership capital, what were Terrell\'s cash investment and the bonus to the new partner? Terrell\'s cash investment Bonus to new partner
Solution
I have already answered this question once.
.
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Please make comments of the following discussion in 150-200 words.If you agree or disagree.why or why not?
EEO laws apply to recruiting activities because a firm is required by the laws to utilize a sufficiently diverse workforce without violating the privacy of others and without and kind of bias based on sex, race, religon, disabilities, and other such things. Without these laws, recruiting activities could become invasive, obtrusive, unfair, and biased in a multitude of ways.
The five main things i would do to help promote diversity in the workforce:
1.) Allow for flex-hours and as much remote working as possible for single parents and the elderly or disabled
2.) Hire on all mediums and through many agencies to try and reach the most demographically diverse audience possible
3.) Offer full-time, part-time, and temporary jobs in a way that is dynamic around the employees available hours
4.) Go through the Office of Disability Employement to provide work for the disabled
5.) Offer counseling and training for uneducated or low skill employees
Solution
Flexible working hours would offer an immense advantage to the employees as it would help to maintain a balance between their personal life and work obligations. Providing the facility of work from home or flexible work hours would help to employ single parents, elderly people and disabled. Thus, it would create diversity in the workforce.
Different agencies including the Office of Disability Employment would help to acquire diverse pool of employee. Full-time, temporary and part-time jobs would help to attract students, other part-time workers, housewives etc. Hiring uneducated or low-skills employees after providing them some training would also help to increase the diversity in workforce.
Above techniques are efficient to maintain a diverse work environment at the workplace without any kind of bias including sex, race, religion, or disabilities.
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The Level-2 instruction formats are:
Q1) ROT // rotate: Pop two words from stack as
// RotationCount: m[SP]
// ValueToBeRotated: m[SP-1]
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// Push the result as
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// m[SP - 3] = Result_High
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these will be uploaded as a .ijvm to a mic-1 simulator
Solution
Ans;
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PLEASE HELP! 1- The integrating power of globalization forces managers.docxkdavid658
PLEASE HELP!
1. The integrating power of globalization forces managers and their firms to be knowledgeable about the nations in which they operate.
(Points : 5) Â Â Â Â Â Â True
False
True
False
Solution
1. True
2. denationalization; internationalization
3. all of the above
4. all of the above
5. True
6. False
7. False
8. True
9. False
10. False
11. True
12. True
13. False
14. True
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16. True
17. value-added taxes
18. Civil law
19. True
20. True
.
please help with answer and explain homo and lumo in terms of acid-bas.docxkdavid658
please help with answer and explain homo and lumo in terms of acid/base. thanks!
10) A molecule with a high HOMO and a low LUMO can act as: (A) a Lewis base only (B) a Lewis acid only (C) a Lewis base and Lewis acid (D) neither a Lewis base, nor a Lewis acid (E) an inert molecule 11) A molecule with a low HOMO and a high LUMO can act as: (A) a Lewis base only (B) a Lewis acid only (C) a Lewis base and Lewis acid (D) an inert molecule (E) none of the above
Solution
10) a molecule with a high HOMO and low LUMO can act as a Lewis Base or Lewis Acid.
11) a molecule with low HOMO and high LUMO can act as an inert molecule.
According to lewis acid base concept, the Homo and Lumo are the pair of orbitals that lie closest.
When having a high HOMO, this is lewis base.
When having a low LUMO , this is lewis acid.
When the HOMO and LUMO are far they have a larger energy gap, and the HOMO-LUMO interactions do not happen.
And when the HOMO and LUMO of a molecule are closer they interact with each other.
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Please help me with this crossword!
Solution
Across:
4.Constitutional Isomers
Cis and trans isomers are formed when the substituents are on opposite sides. These are constitutional Isomers.
5. Levorotatory
When rotation of plane polarized light is towards the left, it is called levorotatory, and if to the right then dextrorotatory.
6. Stereoisomers
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8. Stereocenters
11.Chiral
Have non-superimposible mirror images
13. Constitutional Isomers
Have different connectivities.
14. Raesmic Mixture
Have no optical activity due to external compensation by as equal amounts of + and - enantiomers cancel each other.
15. Skeletol
These are skeletol isomers.
Down:
1. Diastereomers
They are stereoisomers which are not mirror images of each other or are not enantiomers.
2. Achiral
3. Dextrorotatory
7. Meso Compound
Show no optical rotation of plane polarized light due to internal compensation.
9. Functional
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10. Enantiomers
12. Positional
Different position of functional groups will make them positional isomers.
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Please Type Answer! Compare and contrast the properties of acids and b.docxkdavid658
Please Type Answer!
Compare and contrast the properties of acids and bases.
Solution
Acids are species which have the ability to accept a pair of electrons. Acids are sour in taste, corrosive in nature, and turn blue litmus paper to red. Reaction of acids with a base results into loss of acidity (acidic nature) of acid.
while the bases have the ability to donate a pair of electron. And, bases turn red litmum paper to blue. Bases lose their basic nature when they react with an acid.
The reaction between an acid and a base is called acid-base reaction. Two examples are discussed below
#1 HCl + NaOH ----> NaCl + H 2 O
(H + + OH - -----> H 2 O)
#2 BH 3 + NH 3 ----> BH 3 NH 3
In reaction 1, as H + ion of HCl can accept a pair of electron (from OH - of NaOH), thus HCl is an acid and NaOH is a base. Going by the same argument BH 3 in reaction 2, can accept a pair of elctron from NH 3 , thus BH3 is an acid, while NH3 is a base.
Acids and bases contrast in their ability to change the color of litmum. Acids turn blue litmum paper to red, while bases changes the red litmum to blue.
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Please show ALL work- If written please show with neat handwriting- I.docx
1. Please show ALL work. If written please show with neat handwriting. I will rate! Thank You!
Sketch a realistic titration curve for the following situation. For last name starting: A-L Titrate
20.00 mL of 0.300 M morpholine with 0.200 M HCl M-O Titrate 10.00 mL of 0.300 M sodium
4-nitrophenolate with 0.100 M HCI P-Z Titrate 30.00 mL of 0.100 M sodium cyanide with 0.200
M HOI You should show proof of some specific points in the titration curve. i) initial pH ii) pH
at 9.00 mL addition i) pH at the equiv. point iv) pH at 2.00 mL past the equiv. pt.
Solution
Titration
Morpholine with HCl
i) initial pH
[morpholine] = 0.3 M
morpholine + H2O <==> morpholineH+ + OH-
let x amount hydrolyzed
Kb = [morpholineH+][OH-]/[morpholine]
2.5 x 10^-6 = x^2/0.3
x = [OH-] = 8.7 x 10^-4 M
[H+] = 1 x 10^-14/8.7 x 10^-4 = 1.15 x 10^-11 M
pH = -log[H+] = 10.94
ii) 9.0 ml HCl added
moles morpholine = 0.3 M x 20 ml = 6 mmol
2. moles HCl = 0.2 M x 9 ml = 1.8 mmol
morpholineH+ formed = 1.8 mmol
morpholine remained = 6-1.8 = 4.2 mmol
pH = pKa + log(morpholine/morpholneH+)
= 8.4 + log(4.2/1.8)
= 8.77
iii) pH at equivalence point
volume HCl added = 6 mmol/0.2 M = 30 ml
[morpholineH+] formed = 6 mmo/50 ml = 0.12 M
morpholineH+ + H2O <==> morpholine + H3O+
let x amount hydrolyzed
Ka = [morpholine][H3O+]/[morpholineH+]
4 x 10^-9 = x^2/0.12
x = [H3O+] = 2.2 x 10^-5 M
pH = -log[H3O+] = 4.66
iv) pH at 2 ml past equivalence point
excess [HCl] = [H+] = 0.2 M x 2 ml/52 ml = 0.008 M
pH = -log(0.008) = 2.11
v) pH at half-equivalence point
[morpholineH+] formed = [morpholine] remained
pH = pKa = 8.4
Plot,
volume HCl on x-axis and pH on y-axis
![Please show ALL work. If written please show with neat handwriting. I will rate! Thank You!
Sketch a realistic titration curve for the following situation. For last name starting: A-L Titrate
20.00 mL of 0.300 M morpholine with 0.200 M HCl M-O Titrate 10.00 mL of 0.300 M sodium
4-nitrophenolate with 0.100 M HCI P-Z Titrate 30.00 mL of 0.100 M sodium cyanide with 0.200
M HOI You should show proof of some specific points in the titration curve. i) initial pH ii) pH
at 9.00 mL addition i) pH at the equiv. point iv) pH at 2.00 mL past the equiv. pt.
Solution
Titration
Morpholine with HCl
i) initial pH
[morpholine] = 0.3 M
morpholine + H2O <==> morpholineH+ + OH-
let x amount hydrolyzed
Kb = [morpholineH+][OH-]/[morpholine]
2.5 x 10^-6 = x^2/0.3
x = [OH-] = 8.7 x 10^-4 M
[H+] = 1 x 10^-14/8.7 x 10^-4 = 1.15 x 10^-11 M
pH = -log[H+] = 10.94
ii) 9.0 ml HCl added
moles morpholine = 0.3 M x 20 ml = 6 mmol](https://image.slidesharecdn.com/pleaseshowallwork-ifwrittenpleaseshowwithneathandwriting-i-230131015141-bb1fff86/85/Please-show-ALL-work-If-written-please-show-with-neat-handwriting-I-docx-1-320.jpg)
![moles HCl = 0.2 M x 9 ml = 1.8 mmol
morpholineH+ formed = 1.8 mmol
morpholine remained = 6-1.8 = 4.2 mmol
pH = pKa + log(morpholine/morpholneH+)
= 8.4 + log(4.2/1.8)
= 8.77
iii) pH at equivalence point
volume HCl added = 6 mmol/0.2 M = 30 ml
[morpholineH+] formed = 6 mmo/50 ml = 0.12 M
morpholineH+ + H2O <==> morpholine + H3O+
let x amount hydrolyzed
Ka = [morpholine][H3O+]/[morpholineH+]
4 x 10^-9 = x^2/0.12
x = [H3O+] = 2.2 x 10^-5 M
pH = -log[H3O+] = 4.66
iv) pH at 2 ml past equivalence point
excess [HCl] = [H+] = 0.2 M x 2 ml/52 ml = 0.008 M
pH = -log(0.008) = 2.11
v) pH at half-equivalence point
[morpholineH+] formed = [morpholine] remained
pH = pKa = 8.4
Plot,
volume HCl on x-axis and pH on y-axis](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)