Chemistry: A Molecular Approach, 1ce Chapter 11: Liquids, Solids, and Intermolecular Forces 18) How much heat is released when 105 g of steam at 100.0 °C is cooled to ice at -15.0 °C? The enthalpy of vaporization of water is 40.67 kJ mol-1, the enthalpy of fusion for water is 6.01 kJ mol-1, the molar heat capacity of liquid water is 75.4 J mol-1 °C-1, and the molar heat capacity of ice is 36.4 J mol-1 °C-1. A) 54.8 kJ B) 273 kJ C) 319 kJ D) 347 kJ Answer: C Diff: 3
Type: MC
Var: 5
Page Ref: 11.7
19) What is the edge length of a face-centred cubic unit cell made up of atoms having a radius of 128 pm? A) 181 pm B) 362 pm C) 512 pm D) 1020 pm Answer: B Diff: 3
Type: MC
Var: 5
Page Ref: 11.11
20) Nickel has a face-centred cubic structure and has a density of 8.90 g cm-3. What is its atomic radius? A) 125 pm B) 249 pm C) 353 pm D) 997 pm Answer: A Diff: 3
Type: MC
Var: 5
Page Ref: 11.11
21) Gold crystallizes in a face-centred cubic structure. What is the edge length of the unit cell if the atomic radius of gold is 144 pm? A) 204 pm B) 288 pm C) 333 pm D) 407 pm Answer: D Diff: 3
Type: MC
Var: 5
Page Ref: 11.11
22) Cesium has a radius of 272 pm and crystallizes in a body-centred cubic structure. What is the edge length of the unit cell? A) 314 pm B) 385 pm C) 544 pm D) 628 pm Answer: D Diff: 3
Type: MC
Var: 5
Page Ref: 11.11
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