Na2SeO3 --- 2 Na+ + SeO32- 0.08 0.16 0.08 .pdf

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Na2SeO3 ---> 2 Na+ + SeO32- 0.08 0.16 0.08 SeO32- + H2O <---> HSeO3- + OH- 0.08 0 0 -x x x 0.08-x x x Kb2 = Kw/Ka2 = 1E-14/(4.8E-9) Kb2 = 0.21E-5 0.21E-5 = x2/(0.08-x) x = 4.1E-4 HSeO3- + H2O <---> H2SeO3 + OH- 4.1E-4 0 0 -y y y 4.1E-4 - y y y Kb1 = Kw/Ka1 Kb1 = 1E-14/(2.4E-3) = 0.42E-11 The second hydrolysis constant is much smaller than the first, so we can the assume that the first step dominates. [H+]*[OH-]=1E-14 [H+]*4.1E-4=1E-14 [H+] = 0.24E-10 pH = 10.6 Ok? Solution Na2SeO3 ---> 2 Na+ + SeO32- 0.08 0.16 0.08 SeO32- + H2O <---> HSeO3- + OH- 0.08 0 0 -x x x 0.08-x x x Kb2 = Kw/Ka2 = 1E-14/(4.8E-9) Kb2 = 0.21E-5 0.21E-5 = x2/(0.08-x) x = 4.1E-4 HSeO3- + H2O <---> H2SeO3 + OH- 4.1E-4 0 0 -y y y 4.1E-4 - y y y Kb1 = Kw/Ka1 Kb1 = 1E-14/(2.4E-3) = 0.42E-11 The second hydrolysis constant is much smaller than the first, so we can the assume that the first step dominates. [H+]*[OH-]=1E-14 [H+]*4.1E-4=1E-14 [H+] = 0.24E-10 pH = 10.6 Ok?.

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SeO32- + H2O <---> HSeO3- + OH-
0.08 0 0
-x x x
0.08-x x x
Kb2 = Kw/Ka2 = 1E-14/(4.8E-9)
Kb2 = 0.21E-5
0.21E-5 = x2/(0.08-x)
x = 4.1E-4
HSeO3- + H2O <---> H2SeO3 + OH-
4.1E-4 0 0
-y y y
4.1E-4 - y y y
Kb1 = Kw/Ka1
Kb1 = 1E-14/(2.4E-3) = 0.42E-11
The second hydrolysis constant is much smaller than the first, so we can the assume that the first
step dominates.
[H+]*[OH-]=1E-14
[H+]*4.1E-4=1E-14
[H+] = 0.24E-10
pH = 10.6
Ok?

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false, Because Conservatsim is define as a plitical policy that promote the conservation of traditional ,cultural and social stability. establising institutions, and preferring gradual development to abrupt change. Solution false, Because Conservatsim is define as a plitical policy that promote the conservation of traditional ,cultural and social stability. establising institutions, and preferring gradual development to abrupt change..

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d. Fungiform, foliate, and circumvallate papillae Fungiform papillae are mushroom shaped, present at the dorsal surface of the tongue Foliate papillae are ridges and grooves present at the posterior edge of the tongue circumvallate papillae are only few in number, and are located posterior to the oral part of the tongue. ** Filiform papillae are not associated with taste buds. Solution d. Fungiform, foliate, and circumvallate papillae Fungiform papillae are mushroom shaped, present at the dorsal surface of the tongue Foliate papillae are ridges and grooves present at the posterior edge of the tongue circumvallate papillae are only few in number, and are located posterior to the oral part of the tongue. ** Filiform papillae are not associated with taste buds..

d. Fungiform, foliate, and circumvallate papillaeFungiform papilla.pdf

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Carrier sense multiple access with collision detection (CSMA/CD) is a media access method used by twisted-pair Ethernet networks. CSMA/CA is used in wireless networks . Token passing is used in token ring and ARCNET. OFDMA is used in WiMAX. Solution Carrier sense multiple access with collision detection (CSMA/CD) is a media access method used by twisted-pair Ethernet networks. CSMA/CA is used in wireless networks . Token passing is used in token ring and ARCNET. OFDMA is used in WiMAX..

Carrier sense multiple access with collision detection (CSMACD) is .pdf

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c) Why are financial markets essential for a healthy economy and economic growth? Financial markets are a common place where the funds are transferred from people who have surplus funds to those who have shortage of funds. It leads to exchange of funds between the borrowers and the lenders. There are two forms of exchange that can take place in an economy. They are direct exchange and indirect exchange. Direct exchange means that the borrowers and lenders meet each other and exchange their securities like stock, bonds etc. Direct exchange takes place through financial markets only. For an economy to function properly, the financial markets have to function efficiently. The health of an economy depends on the transfer of funds. Thus, financial markets are important for economic growth and healthy economy. d) What are derivatives? How can derivatives be used to reduce risk? Can derivatives be used to increase risk? Explain. Derivatives are financial instruments that are exchanged between two parties and the instrument is based on an underlying asset. The value of the derivative is derived from the value of the underlying asset. Derivatives can be used to reduce risk as well as to increase risk. Some companies use derivatives to reduce their exposure to risk while some companies use derivatives to speculate. The companies that use derivatives to speculate are actually trying to increase their income based on increase in risk. e) Briefly describe each of the following financial institutions: investment banks, commercial banks, financial services corporations, pension funds, mutual funds, exchange traded funds, hedge funds, and private equity companies. Invetsment banks: These are financial institutions that help businesses to launch their Initial Public Offerings and start trading their shares in the market. It helps the business to raise funds through equity. Commercial banks: These are financial institutions that help the individual borrowers to borrow money from the bank and other individuals to save their money in the banks through savings accounts. They accept deposits and provide loans as well as offer investment products for individual investors. Financial services corporations: These are conglomerates that provide financial services to individual investors. A group of such financial service providers are grouped together as a financial service corporation. For example: Citi group. Pension funds: Pension funds are plans or schemes that provide retirement benefits or retirement income to the employees of a company. These are invested in by the individual investors or by the employers or both. Mutual funds: These are financial instruments that consist of a combination of a variety of investment options. It can be a combination of stocks, bonds, gold etc. It attracts the investment from individual investors as well as companies. The mutual funds are managed by professional managers. The aim here is to diversify the risk over a variety of inve.

c) Why are financial markets essential for a healthy economy and eco.pdf

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