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Question 11 Tries remaining: 4 Points out of 1.00 p Flag question Luigi is driving a...
Question 19 Tries remaining: 4 Points out of 1.00 P Flag question The position of a 0.30-kg object attached to a spring is described by x(0.21 m) cos[(0.7n rad/s) q. (Assume tis in seconds.) X= (a) Find the amplitude of the motion. Answer: Check Question 20 Tries remaining: 4 Points out of 1.00 P Flag question (b) Find the spring constant. Answer: Check Question 21 Tries remaining 4 Points out of 1.00 P Flag question (c) Find the position of...
Question 5 Tries remaining: 3 Points out of 1.00 P Flag question To measure their mass while staying in zero-g environments, astronauts use a body-mass measuring device (BMMD). This consist of them grabbing a big spring, and oscillating on it in simple harmonic motion, and measuring the period. The spring constant of the BMMD is 3100 N/m. A) If the astronaut has a period of 1.07 s, what is their mass? Answer: Check Question 6 Points out of 1.00 Tries...
Question 12 Tries remaining: 4 Points out of 1.00 p Flag question In Edgar Allen Poe's short story "The Pit and the Pendulum" includes a scene where a bladed pendulum swings over a person, slowly getting closer. A) If the pendulum has a period of 5.73 s ("Its sweep was brief, and of course slow."), how long is the pendulum? Answer: Check Question 13 Tries remaining: 4 Points out of 1.00 Flag question B) The story also claims that the...
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Tries remaining Points out of 1.00 P Flag question The molar solubility of mercury (1) sulfate (Hg2SO4) is 5.7 x 10-3 M. Determine the Ksp This question allows multiple attempts, however, 1/5 (20%) point will be deducted if an incorrect submission is submitted. Answer: Check Question 2 Tres remaining Points out of 100 pFing question The Ksp for the salt calcium hydroxide (Ca(OH)2) is 1.3 x 10-6. Determine its molar solubility This question allows...
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Question 8 Tries remaining: 2 Points out of 1.00 P Flag question What is the poH of a 0.05611 M solution of LiHS? The Ką of H2S is 8.9x10-8 Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response.
Question 13 Tries remaining 2 Points out of 1.00 P Flag question If the AH for a given reaction is -14.9 kJ, and AS is -78.1 J/K, indicate whether the reaction is spontaneous (and the sign for AG) at the temperature listed. This question allows multiple attempts, however, 1/4 (25%) point will be deducted if an incorrect submission is submitted. T = 150K T298 K Choose Choose Check
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Question 13 Tries remaining 2 Points out of 1.00 P Flag question What is the pH of a solution of the buffer containing 0.004 M HCNO and 0.062 M NaCNO?! The K of HCNO is 2.0x10-4 Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response.
Question 1 Tries remaining: 2 Points out of 1.00 P Flag question What is the percent ionization of a 0.00478 M solution of HF? The Kais 6.4x10-4. Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response. Answer: Check
Check Question 8 Tries remaining: 2 Points out of 1.00 P Flag question What is the poH of a 0.01305 M solution of LiHS? The Ka of H2S is 8.9x10-8. Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response. Answer: Check 59% A RAPJA ві в е год. е
Question 11 Tries remaining 1 Points out of 1.00 Flag question For the reaction below, determine the standard change in Gibb's free energy, 4Gº (kJ). Reference relevant 4Gº formation values in Appendix G. P(s) +506) - PO.(*); K = 0 Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response Answer: Check