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QUESTION 19 The correct answer (reported to the proper number of...
Be sure to put your answer into the proper number of significant digits. > Question 22...
Be sure to put your answer into the proper number of significant digits. > Question 22 4 pts The total pressure exerted by a mixture of nitrogen, oxygen and water vapor is 742 mmHg in a sealed container. The partial pressure of N, is 581 mmHg, and the partial pressure of water vapor is 18 mmHg. What is the pressure (in atm) of the O2 in the container? Make sure to provide your answer to the proper number of significant...
Question 43 2 pts When adding 19.6, 4.79, and 5.819, the correct answer (with significant figures)...
Question 43 2 pts When adding 19.6, 4.79, and 5.819, the correct answer (with significant figures) is 30.2 O 30 30.209 30.21 Question 44 2 pts Given: H2S, H2SO4, H2SO3, HBrO4. Which of these are strong acids? O H2SO4 H2S H2SO4 H2SO3, and HBrO4 H2S, H2SO4, and H2SO3 Question 45 2 pts Which 1M solution would have the lowest pH? NaBr OKOH Sr(OH)2 O HNO3 Question 46 2 pts Isotopes of a given element have different number of neutrons but...
What answer should be reported, with the correct number of significant figures, for the following calculation?...
What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362+ 41)/63.498 =
D Question 3 6 pts Short Answer 3. (6 pts) An alpha particle is simply a...
D Question 3 6 pts Short Answer 3. (6 pts) An alpha particle is simply a helium atom stripped of its electrons (i.e., it is the nucleus of a helium atom, which consists of two protons and two neutrons). If this alpha particle is accelerated through a potential difference of 588 V, how much kinetic energy does it gain in units of eV (electron volts)? Answer to at least three significant figures. 1 eV = 1.6 x 10-19 J and...
Question 26 (5 points) Saved The following calculation is carried out reported to the correct number...
Question 26 (5 points) Saved The following calculation is carried out reported to the correct number of significant figures. (12.25 + 1.00008)x(1.1) = How many significant figures should the final answer be rounded to? 2. 4 6
estion I t yet answeredthe answer with the correct number of significant figures nts out of...
estion I t yet answeredthe answer with the correct number of significant figures nts out of 1.00 Flag question What is the % yield of a nitration reaction where 2 199of methyl benzoote was used and 10 28 mmolofproduct (methy3ntrobenzoate, Pw-181 15) was obtained, ( Answer
Question 38 of 44 Using the correct number of significant figures, calculate the perimeter and volume...
Question 38 of 44 Using the correct number of significant figures, calculate the perimeter and volume of a small, rectangular mirror that is 3.665 in long, 1.519 in wide, and 0.063 in thick. Make sure to calculate the the perimeter of the front of the mirror, and not the side. Dimensions are given in inches, but the final answer should be in centimeters. Recall that 1 in 2.54 cm exactly. cm volume: cm
Chapter 18, Problem 19 Your answer is partially correct. Try again. provides some pertinent background for...
Chapter 18, Problem 19 Your answer is partially correct. Try again. provides some pertinent background for this problem. Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally ng electrons is removed. The radius of the orbit is 4.13 x 10-11 m. Determine the magnitude of the electron's centripetal acceleration. Number2969914218000000000 the tolerance is +/-5% UnitsT m/s 2 LINK TO TEXT By accessing...
i need help with 1-6 i need help with questions 1-6 Question 1 8 pts Choose...
i need help with 1-6
i need help with questions 1-6
Question 1 8 pts Choose the best classification for each of the following substances. a) a substance made from the combination of group 1A element and a group 7A element [Select) > b) [Select) c) [Select) d) C10HSCIN2 (Select) Question 1 Choose the best classification for each of the following substances. a) a substance made from the combination of group 1A element and a group 7A eleme [Select] S...
atom question significant thank you atomic theory of matter Chemistry | early atomic theory I general...
atom question
significant
thank you
atomic theory of matter Chemistry | early atomic theory I general chemistry | isotope POINTS: DIFFICULTY: Easy REFERENCES: 2.5 QUESTION TYPE: Multiple Choice HAS VARIABLES: False KEYWORDS: OTHER: Conceptual DATE CREATED: 3/4/2016 4:31 PM DATE MODIFIED: 2/17/2017 1:56 AM 28. An isotope, X, of a particular element has an atomic number of 8 and a mass number of 18. Therefore: a. X is an isotope of oxygen. b. X has 10 neutrons per atom. c....
Be sure to put your answer into the proper number of significant digits. > Question 22 4 pts The total pressure exerted by a mixture of nitrogen, oxygen and water vapor is 742 mmHg in a sealed container. The partial pressure of N, is 581 mmHg, and the partial pressure of water vapor is 18 mmHg. What is the pressure (in atm) of the O2 in the container? Make sure to provide your answer to the proper number of significant...
Question 43 2 pts When adding 19.6, 4.79, and 5.819, the correct answer (with significant figures) is 30.2 O 30 30.209 30.21 Question 44 2 pts Given: H2S, H2SO4, H2SO3, HBrO4. Which of these are strong acids? O H2SO4 H2S H2SO4 H2SO3, and HBrO4 H2S, H2SO4, and H2SO3 Question 45 2 pts Which 1M solution would have the lowest pH? NaBr OKOH Sr(OH)2 O HNO3 Question 46 2 pts Isotopes of a given element have different number of neutrons but...
What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362+ 41)/63.498 =
D Question 3 6 pts Short Answer 3. (6 pts) An alpha particle is simply a helium atom stripped of its electrons (i.e., it is the nucleus of a helium atom, which consists of two protons and two neutrons). If this alpha particle is accelerated through a potential difference of 588 V, how much kinetic energy does it gain in units of eV (electron volts)? Answer to at least three significant figures. 1 eV = 1.6 x 10-19 J and...
Question 26 (5 points) Saved The following calculation is carried out reported to the correct number of significant figures. (12.25 + 1.00008)x(1.1) = How many significant figures should the final answer be rounded to? 2. 4 6
estion I t yet answeredthe answer with the correct number of significant figures nts out of 1.00 Flag question What is the % yield of a nitration reaction where 2 199of methyl benzoote was used and 10 28 mmolofproduct (methy3ntrobenzoate, Pw-181 15) was obtained, ( Answer
Question 38 of 44 Using the correct number of significant figures, calculate the perimeter and volume of a small, rectangular mirror that is 3.665 in long, 1.519 in wide, and 0.063 in thick. Make sure to calculate the the perimeter of the front of the mirror, and not the side. Dimensions are given in inches, but the final answer should be in centimeters. Recall that 1 in 2.54 cm exactly. cm volume: cm
Chapter 18, Problem 19 Your answer is partially correct. Try again. provides some pertinent background for this problem. Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally ng electrons is removed. The radius of the orbit is 4.13 x 10-11 m. Determine the magnitude of the electron's centripetal acceleration. Number2969914218000000000 the tolerance is +/-5% UnitsT m/s 2 LINK TO TEXT By accessing...
i need help with 1-6
i need help with questions 1-6
Question 1 8 pts Choose the best classification for each of the following substances. a) a substance made from the combination of group 1A element and a group 7A element [Select) > b) [Select) c) [Select) d) C10HSCIN2 (Select) Question 1 Choose the best classification for each of the following substances. a) a substance made from the combination of group 1A element and a group 7A eleme [Select] S...
atom question
significant
thank you
atomic theory of matter Chemistry | early atomic theory I general chemistry | isotope POINTS: DIFFICULTY: Easy REFERENCES: 2.5 QUESTION TYPE: Multiple Choice HAS VARIABLES: False KEYWORDS: OTHER: Conceptual DATE CREATED: 3/4/2016 4:31 PM DATE MODIFIED: 2/17/2017 1:56 AM 28. An isotope, X, of a particular element has an atomic number of 8 and a mass number of 18. Therefore: a. X is an isotope of oxygen. b. X has 10 neutrons per atom. c....
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