1)this question concerns 2-bromobutanoic acid CH3aCH2bCBrHcCOOHd a. for each group of protons (HaHbHcHd) state the splitting...

1)this question concerns 2-bromobutanoic acid CH₃^aCH₂^bCBrH^cCOOH^d

^{a. for each group of protons
(}H^aH^bH^cH^{d) state the
splitting pattern you would expect to see (assume splitting is only
due to neighboring protons)}

^{B. sketch the carbon-13 nmr (without looking it up).
clearly assign each peak.}

^{2) what are shim coils in NMR and what is their
purpose?}

^{3) what is the absorption frequency in a 2.4 T magnetic
field?}

^a)1H B) ¹³C C)¹⁹F D) ³¹P

Expert Solution

queen_honey_blossom answered 1 month ago

1. The carboxylic acid group of an amino acid has a pKa of approximately 2. However,...

1. The carboxylic acid group of an amino acid has a pKa of approximately 2. However, carboxylic acids like benzoic acid and acetic acid have pKas in the range of 4-5 pKa units. Explain why the carboxylic acid of an amino acid is more acidic. 2. Consider the amino acid arginine: a. At physiological pH (pH = 7.4), what is the predominant form in solution? b. What percent of the carboxylic acid group is ionized at this pH? c. What...

State whether each of the following is a group

State whether each of the following is a group.(a) All the real numbers with the rule of combination for forming the product of two elements being addition.(b) All positive integers with the rule of combination being multiplication.(c) All real numbers except zero, with the rule of combination being multiplication.

Each group will have a stock solution of 1M acetic acid and 1M sodium acetate. 2....

Each group will have a stock solution of 1M acetic acid and 1M sodium acetate. 2. Prepare 22mL buffer solution with 0.35M acetic acid and 0.35M sodium acetate. Given that the Ka of acetic acid is 1.8 x 10-5. What is the expected pH of the buffer? 3. Pipette the prepared buffer solution into two clean containers, each with 10mL buffer solution. Calculate and measure how the pH change if a. 2mL 0.025M NaOH is added to tube 1. b....

Question 641 pts In response to concerns over Mexico's inclusion in NAFTA, President Clinton Group of...

Question 641 pts In response to concerns over Mexico's inclusion in NAFTA, President Clinton Group of answer choices Negotiated a "side agreement" on labor Negotiated a "side agreement" on the environment Both A and B None of the above Flag this Question Question 651 pts According to lecture, NAFTA has resulted in: Group of answer choices Overall benefits for all three economies. Some job losses in the U.S. Some job losses in Mexico. All of the above. Flag this Question...

2. Identify stakeholders of HR management activities. For each stakeholder group, state at least one additional...

2. Identify stakeholders of HR management activities. For each stakeholder group, state at least one additional concern that you think might shape how organizations manage human resources. Then, give one specific example of how each stakeholder’s concerns could affect a major HR activity (e.g. planning, recruitment, compensation, training, safety and well-being, or unionization).

Question 2 Whistle-blowing 1 Required: If Ben decides to raise concerns about the product quality of...

Question 2 Whistle-blowing 1 Required: If Ben decides to raise concerns about the product quality of the Benfield Voyagers, he will become a whistle-blower. Explain the term whistle-blower, and distinguish between internal and external whistle- blowing. Which approach should Ben follow if he does decide to raise his concerns? If Ben decides to be a whistle-blower, discuss the five conditions that must exist for his action to be ethical.

QUESTION 1. For each of the following, state whether the occurrence of the variable x occurs...

QUESTION 1. For each of the following, state whether the occurrence of the variable x occurs bound, or free (i.e. unbound), both, or neither. 1. ∃xCube(x) 2. ∀xCube(a) ∧ Cube(x) 3. ∀x((Cube(a) ∧ Tet(b)) → ¬Dodec(x)) 4. ∃yBetween(a,x,y) 5. ¬∀x¬(¬Small(d) ∧ ¬LeftOf(c,x)) QUESTION 2. Correctly label each of the following strings of symbols as a sentence, or well-formed formula (but not a sentence), or neither. 1. Fx ∧ Gy 2. ∃bFb 3. ∃z(Fz → Gb) 4. ∀xFc 5. ∀yFy ∨...

1. Determine the number of electrons, protons and neutrons in each isotope of titanium based on...

1. Determine the number of electrons, protons and neutrons in each isotope of titanium based on the table below. Determine its atomic mass. Isotope Mass (Da) Natural Abundance (%) Electrons Protons Neutrons Atomic Mass 46Ti 45.9526294 8.25 47Ti 46.9517640 7.44 48Ti 47.9479473 73.72 49Ti 48.9478711 5.41 50Ti 49.9447921 5.18 2. For each compound listed below write down the correct formula and calculate the formula mass. • Iron(III) sulfide • Aluminum nitrate • Carbon tetrachloride • Perchloric acid • Ammonium hydroxide...

1- Because resources are scarce relative to individuals' wants, the study of economics concerns Group of...

1- Because resources are scarce relative to individuals' wants, the study of economics concerns Group of answer choices how money is important to people. how individuals make choices relating to how to use those scarce resources. 2- A decision made by a rational person Group of answer choices is intended to make the person worse off. would always make the person wealthier. is identical to a decision that would be made by any other person facing the same choices. is...

Part 2: For each hypothesis question (6 - 8): (a) state the claim mathematically, (b) identify...

Part 2: For each hypothesis question (6 - 8): (a) state the claim mathematically, (b) identify the null and alternate hypotheses, (c) determine the type of test to be used, (d) calculate the test statistic, (e) use either the p-value or critical region method to test the claim, (f) determine whether to reject or fail to reject the Null Hypothesis, (g) state your conclusion. 6. Fandango claim’s that the average cost of a movie ticket is at least $8.75 for...

Question