what is the ph of a buffered sol'n having a 1:20 H2CO3  & HCO3-  w/ 0.1 M concentration and dissociation constant of 7.9x10^-7.

Q: When 4.88 g of a solid mixture composed of NH¼CI and CaCl2 was dissolved in 100.0 mL of water, the t...

A: Given that : The mass of the solid mixture = 4.88 g The volume of water = 100.0 mL The rise in tempe...

Q: 3. 3 Draw resonance structures for the following: (a) H2 .C. HCO CH HC. CH (b) in

A: In resonating structure only charges move not any atom moves. More the number of resonating structur...

Q: H,N N- -NH3 CI CHRYSOIDINE

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Q: What is the electrophoresis in the aromatic nitration ?

A: We have to find which electrophile is correct for the nitration

Q: Use the dropdown menu to indicate whether the rate of the reaction shown below will increase decreas...

A: The correct option are as follows:  

Q: a. Choose the electron configuration of Bi. O (Xe]4fl45a0 6s²6p° O Xe]4f45d06s 6p O (Xe]4fl45d06s²6p...

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Q: 10. Balance the following chemical equation * CO2 + H2O → C,H12O6 + O2 O 6CO2 + 6H20 → C6H1206 + O2 ...

A: Balanced equation is =6CO2+6H2O=C6H12O6+6O2 OPTION B IS CORRECT. 

Q: This question is in organic chemistry: Complete the following reactions, writing the mechanism of t...

A: Ethyl acetoacetate is the active methylene compound because the methylene group (-CH2-) is sandwiche...

Q: H2O2(aq) + 3I-(aq) + 2H+(aq) → I3-(aq) + 2H2O(l) If the concentration of I- drops from 0.975 M to 0...

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Q: Multiple Choice First ionization energies (IE1) generally increase as you move up the periodic tabl...

A: As per Bartleby guidelines, tutors are allowed to answer only first question. So please repost other...

Q: Draw the product of each reaction. HBr CH;CH2OH а. С. H,SO4 [1] CH;O¯ b. [1] "CN d. [2] CH3OH [2] H2...

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Q: [References] ClO2F, use formal charges to choose the Lewis formula that gives the best description o...

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Q: For ionization energy, when is it more unfavorable? How does this relate to the ∆H ?

A: Unfavourable ionization energy means greater amount of energy requirements.  This is possible due to...

Q: 6. The composition of a given substance is as follows: 3.5 mol C, 2.52 g H, 24.0 g O, 3.01 x1023 ato...

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Q: TOPIC: QUANTUM, ATOMIC AND MOLECULAR PHYSICIS a) What are the electron configurations of the molecul...

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Q: the molecule in questionrepresents an enantiomer or ameso compound? This molecule isoptically active...

A: We have to Justify, including in its definition the concept of compound meso and enantiomer as follo...

Q: reference electrode

A: Individual half cell potential depends on temperature, pressure and concentration of solution. So ne...

Q: The following diagram illustrates the process of fragment-based drug discovery Binding site her Opti...

A: In the development of drug, it is necessary that drug must be attached to binding site. Only a speci...

Q: Relerences What are Lewis formulas for the following molecules? a. IBR2 :BrEl- b. CIF,+ 이: FEC-E: c....

A: Lewis formula for :  a) IBr2+ = ?  b) ClF2+ = ?  c) CN- = ? 

Q: Use the data below and Hess’ law to calculate the ΔrHo for the overall reaction: C2H4(g) + 6F2(g) → ...

A: The thermo chemical reactions given are,  Reaction 1: C (s) + 2 F2 (g) → CF4 (g), ∆rH° = – 680 kJ/mo...

Q: 2-methyl-2-pentene   (CH3)2C=CHCH2CH3 B. 2-ethyl-1-butene   (CH3CH2)2C=CH2   Give the name/s only...

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Q: Represent a diastereoisomer of theproposed molecule, indicate theabsolute settings of your carbonsch...

A: We have to indicate the absolute settings of your carbons chirals and discuss whether this is optica...

Q: propose a mechanism for the reaction shown below. If the mechanism has more than one step, show each...

A: H+(aq) from the Cat.HA attacks the lone pair on N to form -NH+. Now the C-N bond breaks to form the ...

Q: 18. Show the mechanism arrows and product for the rate determining step of the Wolff-Kishner reducti...

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Q: . TiCl4 (189.68 g/mol), a source of Ti metal, can be produced from titanium dioxide, carbon and chlo...

A: Given Reaction:-  TiO2(s) + C(s)  + Cl2(g) -----------> TiCl4(s) + CO2(g) +CO(g) Given mass of Ti...

Q: Which of the following statements is/are FALSE? I. A SYSTEM AT CONSTANT TEMPERATURE CANNOT EXPERIENC...

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Q: The reaction below is likely a: CH;CH,OH Cl OCH,CH3 Syl El E2 O. SN2

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Q: A reaction vessel initially contains 3.00 atm of SO2 and 1.00 atm of O2. A reaction occurs according...

A:  given: pressure of SO2 = 3.00 atm pressure of O2 = 1.00 atm total pressure = 3.75 atm To calculate...

Q: Solid sodium cyanide is slowly added to 50.0 mL of a 0.0334 M silver nitrate solution. The concentra...

A:   Ans - a)       First, identify the precipitate,        AgNO3(s) + NaCN(aq) ===>                ...

Q: 4. Determine if the molecules below are aromatic, antiaromatic, or nonaromatic. If it is not aromati...

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Q: a. Write the reagents to carry out the following reactions: A OH CH3-C-CH2-CH3 CH2 CH3-C-CH2-CH3 CH3...

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Q: 7. Identify the reducing agent in the following chemical reaction. 5Fe2 (aq) + MnO, (aq) + 8H* (aq) ...

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Q: 20.00 ml of sulfuric acid was titrated with 17.10 mL of 0.3125 M potassium hydroxide solution. What ...

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Q: Considering the observed rotation value indicated in the table, and considering that the measurement...

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Q: CH3 + N(CH3)3

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Q: Provide the mechanism for the Wittig reaction below.* H3C H3C- PPh3 CH3

A: In organic chemistry, an aldehyde or ketone when react with wittig reagent ( phosphorus ylide) gives...

Q: 5 Question: Synthesize the following compound from diethyl malonate or ethyl acetoacetate and any ot...

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Q: 4. The mass of silicon atoms is * no. of Si atoms 1.63x102 atom [Avogadro's = O 1.04 x 10 g O 4.58 x...

A: Given,  Number of Si atoms =   1.63 x 1021 atoms  Calculate the mass of Si atoms = ?  Options are : ...

Q: /hat is the most stable chair conformer for the compound shown (left)? Use the labels indicated the ...

A: In chair conformation most stable conformation is one in which more bulky group is equatorial.   

Q: A certain metal must absorb radiation with a wavelength no larger than 275 nm in order to eject an e...

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Q: The product of the following reaction is: H3C-C CH + NANH2 H3C-CECH H3C-C= Na H. OH C=C H3C H. O Non...

A: The hydrogen attached to sp hybridised carbon is very acidic due to higher s character.

Q: (a) Ca++, Mg++, K+, Ni++ are considered as exchangeable bases or non-acid cations; (b) Leaching of n...

A: Answer - A if a is correct Solution - According to the question  exchangeable bases' refers to the s...

Q: [References] What are Lewis formulas for the following molecules? a. Вr O: Br-Br: Br-Br. Br Br• O: B...

A:

Q: Which of the following denaturing agents affects disulfide bonds?   a. urea   b. detergents   c. ...

A: The denaturing agents that affects disulfide bonds is 

Q: (a) the molarity of Ag* ions in 100 mL of solution, which corresponds to 0.0001 g of remaining Ag* i...

A: Molarity is the moles of solute dissolved per liter of solution. It is a way of expressing concentra...

Q: Show the mechanism for the nucleophilic aromatic substitution below. Br NH2 NaNH, ZON NaBr ZON

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Q: التار الموضوع : EXS C5 Ha ighites inaiw aut omaticalg with aween SPark fowming cqog and water. what ...

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Q: 2. Indicate the direction of the polarity for each of the bonds indicated except for all carbon to c...

A: We have to indicate the direction of the polarity for each of the bonds indicated as follows in step...

Q: 11. Below is the incomplete mechanism for acetal formation. Draw in all the curved arrows necessary ...

A: aldehyde reacts with alcohol to form acetal.

Q: In the un-balanced reaction: Na2SiO3(s) + HF(aq) → H2SiF6(aq) + NaF(aq) + H2O(l) a) What mass of N...

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.