Coulombic Potential Energy states that magnitude of attraction or repulsion between two charged particles is O directly proportional to the product of the particles' charges and the distance separating them. O directly proportional to the particles' charges and inversely proportional to the distance separating them. O inversely proportional to the particles' charges and the distance separating them. O inversely proportional to the particles' charges and directly proportional to the distance separating them.

Coulombic Potential Energy states that magnitude of attraction or repulsion between two charged particles is O directly proportional to the product of the particles' charges and the distance separating them. O directly proportional to the particles' charges and inversely proportional to the distance separating them. O inversely proportional to the particles' charges and the distance separating them. O inversely proportional to the particles' charges and directly proportional to the distance separating them.

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter5: Nomenclature

Section: Chapter Questions

Problem 12CR

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hat does temperature measure? Are the molecules in a beaker of warm water moving at the same speed as the molecules in a beaker of cold water? Explain? What is heat? Is heat the same as temperature?
The compound hexaazaisowurtzitane is one of the highest-energy explosives known (C E News, Jan. 17, 1994, p. 26). The compound, also known as CL-20, was first synthesized in 1987. The method of synthesis and detailed performance data are still classified because of CL-20s potential military application in rocket boosters and in warheads of smart weapons. The structure of CL-20 is In such shorthand structures, each point where lines meet represents a carbon atom. In addition, the hydrogens attached to the carbon atoms are omitted; each of the six carbon atoms has one hydrogen atom attached. Finally, assume that the two O atoms in the NO2 groups are attached to N with one single bond and one double bond. Three possible reactions for the explosive decomposition ofCL-20 are i. C6H6N12O12(s)6CO(g)+6N2(g)+3H2O(g)+32O2(g) ii. C6H6N12O12(s) 3CO(g) + 3CO2(g) + 6N2(g) + 3H2O(g) iii. C6H6N12O12(s) 6CO2(g) + 6N2(g) + 3H2 (g) a. Use bond energies to estimate E for these three reactions. b. Which of the above reactions releases the largest amount of energy per kilogram of CL-20?
Arrange the following series of compounds in order of increasing lattice energies. (a) NaBr, NaCl, KBr (b) MgO, CaO, CaCl2 (c) LiF, BeF2, BeO
Given the following data calculate H for the reaction On the basis of the enthalpy change, is this a useful reaction for the synthesis of ammonia?
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The standard enthalpies of formation for S(g), F(g), SF4(g), and SF6(g) are + 278.8, + 79.0, 775, and 1209 kJ/mol, respectively. a. Use these data to estimate the energy of an SF bond. b. Compare your calculated value to the value given in Table 8.5. What conclusions can you draw? c. Why are the Ht0 values for S(g) and F(g) not equal to zero, since sulfur and fluorine are elements?
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A neutral object is sketched below, in black and white. There are positive and negative electric charges inside this object, and at least some of those charges can move around. Now suppose a positive charge comes close to this object, as shown in the sketch. Shade the object red anywhere you expect it to become more negatively charged, and shade the object blue anywhere you expect it to become more positively charged.
The lattice energy of NaBr is –752 kJ/mol. This energy corresponds to which reaction below? Na(s) + 1/2 Br2(g) → NaBr(s) Na(g) + Br(g) → NaBr(s) Na(g) + Br(g) → NaBr(s) Na+(g) + Br–(g) → NaBr(s) Na+(aq) + Br–(aq) → NaBr(s)
The ionic radii of element E and a different metallic element, M, are shown in the following table: Both elements form oxides, E2O and MO. If lattice energy is defined as the energy required to separate an ionic solid into individual separate gaseous ions, would the lattice energy of MO be less than, equal to, or greater than the lattice energy of the oxide E2O? Justify your answer in terms of Coulomb's law
6.941 mol atomic mass electronegativity 0.98 kJ 59.6 mol electron affinity kJ 520.2 mol ionization energy kJ 3.0 mol heat of fusion Does the following reaction absorb or release energy? O release O absorb (1) Li (g) + e Li(g) O Car be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? O yes O no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): O k/mol Does the following reaction absorb or release energy? O release O absorb (2) Li(g) → Li (g) + e O Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? O yes O no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): I kJ/mol
g 6.941 mol atomic mass electronegativity 0.98 kJ 59.6 mol electron affinity kJ 520.2 mol ionization energy kJ 3.0 mol heat of fusion Does the following reaction absorb or release energy? O release O absorb (1) Li (g) + e Li(g) O Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? O yes no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): I kJ/mol Does the following reaction absorb or release energy? O release O absorb (2) Li(g) → Li (g) + e O Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? O yes O no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): I kJ/mol

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