Which of the following acids is the weakest? * Acid THREE (pKa = 6.4) Acid FOUR (pKa = 3.74) Acid ONE (pKa = 3.14) Acid TWO (pKa = 3.35)

Q: MCQ 26: Protons are deflected from anode which reveals their A. positive charge B. negative charge…

A: Protons are deflected from anode which reveal their positive charge.

Q: How was the theoretical value of the pKa determined? In that given graph

A: Explanation is given in the following step.

Q: A solution is measured pH = 3.7 at room temperature. Calculate the activity of H+ = ______ mol/L.…

A: We know that pH of the solution can be expressed as the negative logarithm of hydrogen ion…

Q: You have a 11.5 mg sample of blood that contains various proteins. Hemoglobin is the only protein in…

A:

Q: 41 of 48 The Ksp expression is O [products] [reactants] O [reactants] [products] [cation][anion] 1…

A: Ksp is solubility product constant.

Q: Lis) + % F21g) → LiFs) -594.1 kJ/mol (réaction globale) l'énergie de cohésion du réseau ionique ???…

A: The Born-Haber cycle for LiF is as follows:

Q: A general expression for Alpha values Consider a 1.64 M solution of Phtalic acid C6H4 (CO2H)2…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: How did you get pKa? where did 1.8 * 10^-5 come from?

A:

Q: Given that Ka for HClO is 4.0 × 10-8 at 25 °C, what is the value of Kb for ClO– at 25 °C?

A: The relationship between Ka and kb is,

Q: Ka for boric acid is 7.3 x 10¯10.  What is the pKa of boric acid?   A 4.86   B 9.14   C 8.66…

A: Using relation between ka and pKa , we wi calculate pKa .

Q: Given that A = 115.47 and Emin/ Ocg= 852.9, What is the value of K12? a. 0.36 b. 0.31 c. 0.33

A: Given  A=115.47 Emin/Ocg=852.9 We have to find the value of K12.

Q: O The pH of the solution has decreased. O The pH of the solution has increased. O The green…

A: According to the question, the color of phenolphthalein changes from clear to pink in an acid-base…

Q: Sea water contains an average of 1.08 x 10 ppm of Na". Calculate the molar concentrations of Na…

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Q: Answer the following if True or False. (1-10) 1. Radioactivity emanates from stable isotopes of…

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Q: Calculate the alpha values for citric acid in a solution with a pH of 3.77, what is the predominate…

A: Citric acid is a triprotic acid.

Q: CH,OH 0- The following compound is best considered the: ÓH ОН ÓH A) alpha-form

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Q: For numbers 106 -110, refer to the given choices below. For each pair of isotopes listed, predict…

A: NOTE : Since you've posted multiple sub-parts,we'll solve first three sub-parts for you. To get the…

Q: If the pKa of an acid is 3.29 what is the aka of the acid? 1950 0.303 0.517 5.13x10^-4

A: pKa = -LogKa                       This is our working formula…

Q: Find the antilog of each of the following numbers: a. 0.6590 = b. 0.2304 =. c. 0.70 = c. 0.4997 =

A: Given:we have to find the antilog of each of the following numbers:a) 0.6590    b) 0.2304    c)0.70…

Q: Use a calculator when necessary to answer the following questions. a. What is the pKa for each Ka:…

A: Since the relationship between the pKa and Ka is given by  pKa = -log(Ka ) the above equation can…

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A: A plasma is an ionized gas that is reflective to low frequency electromagnetic waves like radio…

Q: copper occurs as a mixture of two isotopes: The isotope Cu has a relative abundance of 69%, while…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: Which Isotope has the same number of neurons as phosphorus-31

A: Isotopes are the elements having same atomic number but different mass number i.e. different number…

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A: Can either gain or lose electron -  Hydrogen  Hydrogen has only one electron. Thus, it can either…

Q: 100 pm in front of the nucleus, along the -y axis. 100 pm to the left of the nucleus, along the -x…

A: The orbital sketch given is

Q: 3

A:

Q: Which of the following has the lowest pKa value

A: The value that expresses negative logarithm10 of Ka (the dissociation constant of acid) is known as…

Q: nin x UNIT_8_PROGRESS_CHECK (Protected View) - Word (Unlicensed Product) Mailings Review View Help…

A: The dissociation reactions for 0.10 M HF and C2H4O2 are as follows:

Q: Which of the following is the main anion in the body? Cl- S2- SO42- CO32-

A: The main anion present in the body has to be given.

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Q: 70% VO2max is typically associated with sustained, uncomfortable activity O True O False

A: VO2 max is the rate of oxygen consumption that is maximum during excercise that are incremental.

Q: Activity 2: Isotope Notation and Symbols The composition of any atom can be represented in shorthand…

A: Isotopes have same atomic number but different mass number.  In representation of an element…

Q: You have a 11.5 mg sample of blood that contains various proteins. Hemoglobin is the only protein in…

A:

Q: A 50.0 gram sample of SAE 15W-40 motor oil is sent for testing. It was found to contain 13.4…

A: Given:Mass of SAE 15W-40 motor oil  = 50.0 gramMass of lead = 13.4 mgconcentration of oil in M is to…

Q: A substance has a half-live of 5 minutes.  We have 50 grams of substance.  If 60 minutes has passed,…

A: The solution is as follows :

Q: 2. 370

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Q: Which is a stronger acid: one with a pKa of 5.2 or one with a pKa of 5.8?

A: The value of dissociation constant of acids tells us about the acidic strength of acids. The acid…

Q: 3. Which is the stronger acid: (b) Boric acid with a pKa of 9.14 or carbonic acid with a pka of…

A: pKa value can be used for deciding acid is strong or weak. pKa=-log10(Ka)where Ka is acid…

Q: 3.25 mL of Biomarker A (4.21 x 10-7 mol L-) was brought up to volume with deionized water in a 50 mL…

A: Given data : Initial volume(V1) = 3.25 mL Initial concentration(M1) = 4.21 × 10-7 mol L-1 Final…

Q: What is the charge of the predominant form of phosphoric acid at pH=3.00 pKa 2.15, pKa27.20, pK=…

A: Given: pH = 3.00

Q: You have a 11.5 mg sample of blood that contains various proteins. Hemoglobin is the only protein in…

A: from the quantitative analysis we can get the idea about the amount of Hb present in the blood .

Q: Calculate the pKa of an acid with Ka = 7.77 x 10-4. %3D O A. 2.230 О в. 3.110 O C. 4.147 D. 7.160 O…

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Q: (References) Use the References to access important values if needed for this question. Taking…

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Q: All of the following statements concerning nuclei are true EXCEPT more stable isotopes have an even…

A: We know that any nuclei is stable if it has full electrons in its outer most orbital, and the fully…

Q: Why are the carboxylic acid groups of the amino acids more acidic (pKa - 2) than a carboxylic acid…

A: Given: The carboxylic acid groups of the amino acids = pKa = 2 The carboxylic acid groups of the…

Q: Acid A has a pKa value of 5.71, and acid B has a pKa value of 5.30. Which of the two acids is the…

A: Weak acid: Weak acid does not dissociate completely when dissolved in water. Strong acid:  Strong…

Q: (5): The pKa of HF is 3.167. What is Kb for F¯ ?

A: Write the dissociation reaction of HF in water.

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.