Homework Answers
option b) is correct
Although Saturn is much larger than Earth, its surface gravity is only a little more than the surfacegravity on Earth. This is because Saturn is made up of gases and is not solid like Earth. This makesSaturn very light for its size.
The surface gravity on Saturn is about 107% of the surface gravity on Earth,
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10) Why does Saturn have rings formed by small pieces of material instead of continuous solid...
The Reactions Between Bromine and Antimony or Aluminum: In the hood, small pieces of aluminum foil...
The Reactions Between Bromine and Antimony or Aluminum: In the hood, small pieces of aluminum foil and antimony will be added to bromine under standard conditions. The bromine is in a flask with a narrow neck. Placing a beaker having a 1M aqueous solution of sodium thiosulfate nearby when performing the reaction. a) Provide balanced chemical reactions describing the behavior for each of the two reactions (bromine + antimony and bromine + aluminum)? b) Are there any particular hazards associated...
10. The formation of complex ions causes the solubility of a slightly soluble solid to: A...
10. The formation of complex ions causes the solubility of a slightly soluble solid to: A increase B. decrease C. stay the same D. none of the above 11. The equivalence point of a titration occurs: A. when all of the analyte has been titrated (reacted B. usually just before the endpoint. C. Both A and B D. Neither A or B 12. How does a buffer resist change in pH upon addition of a strong acid? A) The strong...
3 pts each la) A solid disk and a hoop have the same mass and radius....
3 pts each la) A solid disk and a hoop have the same mass and radius. If they have the same angular momentum, the angular speed of the disk is than the angular speed of the hoop. a) four times larger b) two times larger c) two times smaller d) four times smaller 1b) An object undergoing simple harmonic motion has a maximum potential energy of 12 J when it reaches its maximum displacement x = A. What the object's...
For questions 5-10, assume that A and B are 0/1 variables, y represents a non-negative continuous...
10 Logical constraints
For questions 5-10, assume that A and B are 0/1 variables, y represents a non-negative continuous variable and M represents a very large number. Choose the constraint that correctly models the preceding statement. 5. If A happens then B happens. 6. IfA or B happens, then C cannot happen. 7. If A happens then yc 6 a. Ус6A 8. If A happens then B and Cmust happen. a. A B+C 9. IfA does not happen then y...
Please explain why the correct answer is correct, and why the others can't be. 1. Why...
Please explain why the correct answer is correct, and
why the others can't be.
1. Why do astronauts on the International Space Station float, apparently weightless, rather than stand on the floor? (The space station is about 400km above the surface of the Earth) a. There is no gravity in space b. The gravitational field is virtually zero c. The astronauts have no mass in space d. The astronauts and space station are both in freefall e. The gravitational force...
help with 5 and 6 please 5. Choose the effective pH range of a HF/Naf buffer. For HF, Ka = 3.5 x 10-4 6. If a small...
help with 5 and 6 please
5. Choose the effective pH range of a HF/Naf buffer. For HF, Ka = 3.5 x 10-4 6. If a small amount of a strong acid is added to buffer made up of a weak acid, HA, and the sodium salt of its conjugate base, NaA, the pH of the buffer solution does not change appreciably because a) the Ka of HA is changed. b) the strong acid reacts with Ato give HA, which...
6) How many signals does the IH NMR spectrum of 4-methyl-1-propylbenzene have? A) 4 B) 5...
6) How many signals does the IH NMR spectrum of 4-methyl-1-propylbenzene have? A) 4 B) 5 C)6 D) E) 6) 7) - 7) What is the main intramolecular force between two molecules of propanoic acid? A) London dispersion forces B) hydrogen bonding C) dipole-dipole interaction D) induced dipole interactions E) none of the above 8) The best leaving group is a A) weak acid. B) strong base C) strong acid. D) weak base. E) none of the above. 9) 9)...
Page 3 of 6 10. Which of the following is correct? a) The rotation axes of...
Page 3 of 6 10. Which of the following is correct? a) The rotation axes of planets are always perpendicular to their orbital plane (the ecliptic). b) No planet's orbital inclination is more than 20 degrees from the ecliptic. c) Planets orbits are circular. d) Planets always rotate and revolve in the same direction. 11. Which of the following is not a real difference between asteroids and comets? a) Asteroids are made mostly of rock and comets are made mostly...
1. a) Why does biphenyl have a higher Rf value than either benzophenone or triphenylmethanol? Exp...
1. a) Why does biphenyl have a higher Rf value than either benzophenone or triphenylmethanol? Explain based on the structures and their effect on mobility in the TLC process. b) Which compound, benzophenone or triphenylmethanol has a higher Rf value? Explain, based on their structures, how you can predict this. c) You developed your TLC using a 10% mixture of diethyl ether in petroleum ether. Petroleum ether is a mixture of non-polar alkanes, so this TLC solvent is composed of...
2. A truck and a small car are both going 10 mph when they collide head...
2. A truck and a small car are both going 10 mph when they collide head on. a. Does the truck or the car experiences the largest force during the collision? Why? b. Which experiences the largest impulse during the collision? Why? c. Which experiences the largest change in momentum during the collision? Why? d. Which will experience the largest change in velocity? Why? 3. What is the difference between elastic and inelastic collisions?
10. The formation of complex ions causes the solubility of a slightly soluble solid to: A increase B. decrease C. stay the same D. none of the above 11. The equivalence point of a titration occurs: A. when all of the analyte has been titrated (reacted B. usually just before the endpoint. C. Both A and B D. Neither A or B 12. How does a buffer resist change in pH upon addition of a strong acid? A) The strong...
3 pts each la) A solid disk and a hoop have the same mass and radius. If they have the same angular momentum, the angular speed of the disk is than the angular speed of the hoop. a) four times larger b) two times larger c) two times smaller d) four times smaller 1b) An object undergoing simple harmonic motion has a maximum potential energy of 12 J when it reaches its maximum displacement x = A. What the object's...
10 Logical constraints
For questions 5-10, assume that A and B are 0/1 variables, y represents a non-negative continuous variable and M represents a very large number. Choose the constraint that correctly models the preceding statement. 5. If A happens then B happens. 6. IfA or B happens, then C cannot happen. 7. If A happens then yc 6 a. Ус6A 8. If A happens then B and Cmust happen. a. A B+C 9. IfA does not happen then y...
Please explain why the correct answer is correct, and
why the others can't be.
1. Why do astronauts on the International Space Station float, apparently weightless, rather than stand on the floor? (The space station is about 400km above the surface of the Earth) a. There is no gravity in space b. The gravitational field is virtually zero c. The astronauts have no mass in space d. The astronauts and space station are both in freefall e. The gravitational force...
help with 5 and 6 please
5. Choose the effective pH range of a HF/Naf buffer. For HF, Ka = 3.5 x 10-4 6. If a small amount of a strong acid is added to buffer made up of a weak acid, HA, and the sodium salt of its conjugate base, NaA, the pH of the buffer solution does not change appreciably because a) the Ka of HA is changed. b) the strong acid reacts with Ato give HA, which...
6) How many signals does the IH NMR spectrum of 4-methyl-1-propylbenzene have? A) 4 B) 5 C)6 D) E) 6) 7) - 7) What is the main intramolecular force between two molecules of propanoic acid? A) London dispersion forces B) hydrogen bonding C) dipole-dipole interaction D) induced dipole interactions E) none of the above 8) The best leaving group is a A) weak acid. B) strong base C) strong acid. D) weak base. E) none of the above. 9) 9)...
Page 3 of 6 10. Which of the following is correct? a) The rotation axes of planets are always perpendicular to their orbital plane (the ecliptic). b) No planet's orbital inclination is more than 20 degrees from the ecliptic. c) Planets orbits are circular. d) Planets always rotate and revolve in the same direction. 11. Which of the following is not a real difference between asteroids and comets? a) Asteroids are made mostly of rock and comets are made mostly...
2. A truck and a small car are both going 10 mph when they collide head on. a. Does the truck or the car experiences the largest force during the collision? Why? b. Which experiences the largest impulse during the collision? Why? c. Which experiences the largest change in momentum during the collision? Why? d. Which will experience the largest change in velocity? Why? 3. What is the difference between elastic and inelastic collisions?
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Brief Exercise 12-65
Profitability Ratios
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Assess the two types of tests of cognitive abilities. (
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Please answer this asap in MATLAB.
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