Domanda del libro di testo
Which solid in each pair has the higher melting point and why? d. NaCl(s) or CaO(s)
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Ch.12 - Solids and Modern Material
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving136
- Ch.2 - Atoms & Elements112
- Ch.3 - Molecules, Compounds & Chemical Equations159
- Ch.4 - Chemical Quantities & Aqueous Reactions140
- Ch.5 - Gases118
- Ch.6 - Thermochemistry106
- Ch.7 - Quantum-Mechanical Model of the Atom62
- Ch.8 - Periodic Properties of the Elements103
- Ch.9 - Chemical Bonding I: The Lewis Model104
- Ch.10 - Chemical Bonding II: Molecular Shapes & Valence Bond Theory89
- Ch.11 - Liquids, Solids & Intermolecular Forces73
- Ch.12 - Solids and Modern Material59
- Ch.13 - Solutions110
- Ch.14 - Chemical Kinetics140
- Ch.15 - Chemical Equilibrium78
- Ch.16 - Acids and Bases155
- Ch.17 - Aqueous Ionic Equilibrium176
- Ch.18 - Free Energy and Thermodynamics108
- Ch.19 - Electrochemistry118
- Ch.20 - Radioactivity and Nuclear Chemistry82
- Ch.21 - Organic Chemistry150
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831Non è quello che usi tu?Cambia libro di testo
Capitolo 12, Problema 46
An oxide of rhenium crystallizes with the unit cell shown here (rhenium=gray; oxygen=red). What is the formula of the oxide?
Guida verificata passo dopo passo1
Identify the type of unit cell and the positions of the atoms within the unit cell.
Count the number of rhenium atoms in the unit cell. Consider atoms at corners, edges, faces, and within the cell.
Count the number of oxygen atoms in the unit cell. Consider atoms at corners, edges, faces, and within the cell.
Determine the ratio of rhenium to oxygen atoms in the unit cell.
Use the ratio to write the empirical formula of the oxide.
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Unit Cell Structure
A unit cell is the smallest repeating unit in a crystal lattice that reflects the symmetry and structure of the entire crystal. Understanding the arrangement of atoms within the unit cell is crucial for determining the overall composition and formula of the compound. In this case, the positions of rhenium and oxygen atoms within the unit cell will help deduce the stoichiometry of the oxide.
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Percorso guidato
01:27
Simple Cubic Unit Cell
Stoichiometry
Stoichiometry involves the calculation of reactants and products in chemical reactions, based on the conservation of mass. In the context of determining the formula of a compound, it refers to the ratio of different elements present in the compound. By analyzing the number of rhenium and oxygen atoms in the unit cell, one can derive the empirical formula of the oxide.
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Percorso guidato
01:16Stoichiometry Concept
Oxide Compounds
Oxides are compounds formed by the reaction of oxygen with another element, typically resulting in a binary compound. The properties and formulas of oxides can vary significantly based on the oxidation states of the metal involved. In this case, understanding the common oxidation states of rhenium will aid in predicting the possible formula of the rhenium oxide based on its crystal structure.
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Percorso guidato
00:58Oxide Reactions
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Which solid in each pair has the higher melting point and why?
a. TiO2(s) or HOOH(s)
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c. Kr(s) or Xe(s)
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Domanda del libro di testo
Which solid in each pair has the higher melting point and why?
a. Fe(s) or CCl4(s)
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Domanda del libro di testo
Identify the structure of each of the two unit cells shown in Problem 48 as the rock salt structure, zinc blende structure, fluorite structure, antifluorite structure, or none of these.
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