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.13 - Solids & Modern Materials
Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving117
- Ch.2 - Atoms & Elements106
- Ch.3 - Molecules and Compounds128
- Ch.4 - Chemical Reactions and Chemical Quantities56
- Ch.5 - Introduction to Solutions and Aqueous Solutions84
- Ch.6 - Gases112
- Ch.7 - Thermochemistry96
- Ch.8 - The Quantum-Mechanical Model of the Atom60
- Ch.9 - Periodic Properties of the Elements86
- Ch.10 - Chemical Bonding I: The Lewis Model91
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory85
- Ch.12 - Liquids, Solids & Intermolecular Forces51
- Ch.13 - Solids & Modern Materials48
- Ch.14 - Solutions93
- Ch.15 - Chemical Kinetics114
- Ch.16 - Chemical Equilibrium68
- Ch.17 - Acids and Bases137
- Ch.18 - Aqueous Ionic Equilibrium154
- Ch.19 - Free Energy & Thermodynamics91
- Ch.20 - Electrochemistry105
- Ch.21 - Radioactivity & Nuclear Chemistry74
- Ch.22 - Organic Chemistry141
Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371Non è quello che usi tu?Cambia libro di testo
Capitolo 13, 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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