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Can You Please Answer #4 With The Correct Multiple Choice
Letter?
4. (2 pts) Which of...
Please show all work as needed and provide correct multiple choice answer. Thanks 5. You are...
Please show all work as needed
and provide correct multiple choice answer. Thanks
5. You are preparing a buffer of pH = 8.95 for an experiment. Your lab partner has already added 0.0455 moles of HBrO to a flask containing 1.00 L of water. A. (8 pts) You need to add some NaBrO to finish the buffer preparation. How many moles of NaBrO are required? Assume that the volume of the solution won't change when you add the solid. pK...
Please explain your answer: Of the following, only_forms a useful buffer system. A) 0.3M HCI /...
Please explain your answer:
Of the following, only_forms a useful buffer system. A) 0.3M HCI / 0.5M NaOH B) 0.3M HCI/ 0.5M NaC2H302 D) 0.3M HCI / 0.5M NaCl E) 0.3M HCI / 0.5M NH4CI
Multiple choice questions continued. Please circle the letter of your answer or write the letter of...
Multiple choice questions continued. Please circle the letter of your answer or write the letter of your answer clearly in the space provided. MC 7. (8 pts) Let f(1) = (1-3) Which of the following intervals describes ALL the points where f is concave up? (A) (0,3) (B) (-2,5) (C) (-2,00) (D) (-5,5) (E) (5,00) Answer: MC 8. (8 pts) Consider two numbers whose difference is -40. What is the smallest possible value of their product? (A) 41 (B) 400...
Multiple Choice (1 point cach): Circle the letter of the most correct answer 22. (1 pts)...
Multiple Choice (1 point cach): Circle the letter of the most correct answer 22. (1 pts) The TCA cycle intermediate that is a substrate for glutamate synthase is a Coenzyme A b. 2-oxo-glutarate Succinate d. Malate 23. (1 pts) Which of these compounds is typically released by root hair cells to act as an attractant to nitrogen-fixing bacteria? a Aspartate b. Flavonoid e Acetate d. Leghemoglobin 24.(1 pts) Binding of a Nod factor by a root hair receptor results in...
Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate,...
Say, for example, that you had prepared a Buffer C, in which you
mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0 M
acetic acid.
a. What would be the initial pH of Buffer C?
pH of Buffer C = 4.74, pH of Buffer B = 4.74
b. If you add 5.0 mL of 0.5 M NaOH solution to 20.0 mL
each of Buffer B and Buffer C, which buffer’s pH would change less?
Explain.
Buffer ABufferB...
4. Multiple Choice Place your answer in the space provided. (2 pts. each; 12 pts. total)...
4. Multiple Choice Place your answer in the space provided. (2 pts. each; 12 pts. total) Which is NOT true of the aldol condensation? A. It accomplishes the formation of a new carbon-carbon bond B. The enolate is favored at equilibrium (assume NaOH as the base) C. The key step is the mechanism is attack of the enolate ion on a carbonyl carbon atom D. Dehydration of the aldol product is often observed and is irreversible. _Which sets of hydrogen...
1. Which of the following make a buffer solution? (circle all the correct answers) a. 0.1...
1. Which of the following make a buffer solution? (circle all the correct answers) a. 0.1 M HCl and 0.1 M NaCl b. 0.1 M HF and 0.075 M KF C. 0.15 M Pentanoic acid and 0.15 M sodium pentanoate d. 0.1 M NaOH and 0.1 M HCI e. 0.1 M acetic acid and 0.00001 sodium acetate 2. Which of the following could make buffer systems when mixed together? (circle the correct answers) a. 0.10 M acetic acid and 0.05...
Identify the letter of choice that best completes the statement or answers the question. PLEASE ANSWER...
Identify the letter of choice that best completes the
statement or answers the question. PLEASE ANSWER ALL! Thank
you!
Part I. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question (2 points each). 1. Which atomic orbitals overlap to form the carbon-carbon o bond and bond of ethylene, HC-CH2? a. o: sp + sp, and sp?+ sp c. 0:sp+ sp, and spi+sp? b. o: sp + sp, and p+p d. o: sp+sp',...
PLEASE INDICATE WHICH LETTER YOU USED TO SOLVE AND THE NUMERICAL ANSWER WITH UNITS!! Please mark...
PLEASE INDICATE WHICH LETTER YOU USED TO SOLVE AND THE
NUMERICAL ANSWER WITH UNITS!!
Please mark your answers to the multiple choice questions and put the final number with correct units for the questions which require calculations. For each question involving calculations, the multiple choice part weights 5 points: correct number (sign/direction) - 9 points; correct units 1 point. Use scratch paper for your calculations but don't submit it. Submit only this file with your answers. 4. (15 points) The...
Name Multiple Choice. Please write the correct letter in the space provided. 4 points each. 1....
Name Multiple Choice. Please write the correct letter in the space provided. 4 points each. 1. The specific gravity of zinc is 7.1. A sample of zinc has a volume of 1.5 m. It has a mass of A) 3.55 kg 3 kg D) 355 kg B) 3.55x108 kg C) 3.55x10 2. In Bernoulli's Equation, the term that represents work done on a fluid due to gravitational potential energy effects is C) A) P, pgy B) 72 pv? D) AV...
Please show all work as needed
and provide correct multiple choice answer. Thanks
5. You are preparing a buffer of pH = 8.95 for an experiment. Your lab partner has already added 0.0455 moles of HBrO to a flask containing 1.00 L of water. A. (8 pts) You need to add some NaBrO to finish the buffer preparation. How many moles of NaBrO are required? Assume that the volume of the solution won't change when you add the solid. pK...
Please explain your answer:
Of the following, only_forms a useful buffer system. A) 0.3M HCI / 0.5M NaOH B) 0.3M HCI/ 0.5M NaC2H302 D) 0.3M HCI / 0.5M NaCl E) 0.3M HCI / 0.5M NH4CI
Multiple choice questions continued. Please circle the letter of your answer or write the letter of your answer clearly in the space provided. MC 7. (8 pts) Let f(1) = (1-3) Which of the following intervals describes ALL the points where f is concave up? (A) (0,3) (B) (-2,5) (C) (-2,00) (D) (-5,5) (E) (5,00) Answer: MC 8. (8 pts) Consider two numbers whose difference is -40. What is the smallest possible value of their product? (A) 41 (B) 400...
Multiple Choice (1 point cach): Circle the letter of the most correct answer 22. (1 pts) The TCA cycle intermediate that is a substrate for glutamate synthase is a Coenzyme A b. 2-oxo-glutarate Succinate d. Malate 23. (1 pts) Which of these compounds is typically released by root hair cells to act as an attractant to nitrogen-fixing bacteria? a Aspartate b. Flavonoid e Acetate d. Leghemoglobin 24.(1 pts) Binding of a Nod factor by a root hair receptor results in...
Say, for example, that you had prepared a Buffer C, in which you
mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0 M
acetic acid.
a. What would be the initial pH of Buffer C?
pH of Buffer C = 4.74, pH of Buffer B = 4.74
b. If you add 5.0 mL of 0.5 M NaOH solution to 20.0 mL
each of Buffer B and Buffer C, which buffer’s pH would change less?
Explain.
Buffer ABufferB...
4. Multiple Choice Place your answer in the space provided. (2 pts. each; 12 pts. total) Which is NOT true of the aldol condensation? A. It accomplishes the formation of a new carbon-carbon bond B. The enolate is favored at equilibrium (assume NaOH as the base) C. The key step is the mechanism is attack of the enolate ion on a carbonyl carbon atom D. Dehydration of the aldol product is often observed and is irreversible. _Which sets of hydrogen...
1. Which of the following make a buffer solution? (circle all the correct answers) a. 0.1 M HCl and 0.1 M NaCl b. 0.1 M HF and 0.075 M KF C. 0.15 M Pentanoic acid and 0.15 M sodium pentanoate d. 0.1 M NaOH and 0.1 M HCI e. 0.1 M acetic acid and 0.00001 sodium acetate 2. Which of the following could make buffer systems when mixed together? (circle the correct answers) a. 0.10 M acetic acid and 0.05...
Identify the letter of choice that best completes the
statement or answers the question. PLEASE ANSWER ALL! Thank
you!
Part I. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question (2 points each). 1. Which atomic orbitals overlap to form the carbon-carbon o bond and bond of ethylene, HC-CH2? a. o: sp + sp, and sp?+ sp c. 0:sp+ sp, and spi+sp? b. o: sp + sp, and p+p d. o: sp+sp',...
PLEASE INDICATE WHICH LETTER YOU USED TO SOLVE AND THE
NUMERICAL ANSWER WITH UNITS!!
Please mark your answers to the multiple choice questions and put the final number with correct units for the questions which require calculations. For each question involving calculations, the multiple choice part weights 5 points: correct number (sign/direction) - 9 points; correct units 1 point. Use scratch paper for your calculations but don't submit it. Submit only this file with your answers. 4. (15 points) The...
Name Multiple Choice. Please write the correct letter in the space provided. 4 points each. 1. The specific gravity of zinc is 7.1. A sample of zinc has a volume of 1.5 m. It has a mass of A) 3.55 kg 3 kg D) 355 kg B) 3.55x108 kg C) 3.55x10 2. In Bernoulli's Equation, the term that represents work done on a fluid due to gravitational potential energy effects is C) A) P, pgy B) 72 pv? D) AV...
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