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What is smog? List the gasses.

Smog can be defined as a mixture of gases and very small solid or liquid particles, also known as particulate matter. Smog consists of such gases as ozone, oxides of nitrogen, Sulphur dioxide, and NOx.

What role does dancing play in Pride & Prejudice?

In “Pride and Prejudice”, dance performs as the setting for some social rituals. Like that of courtship, for example. Dance enables people to learn and socialize with each other. It goes this way both in the novel and in real life. Especially when it comes to the Victorian era. It...

a. Explain the use of Kroger-Vink notation to describe the formation of and interactions between point defects in solids. What rules must be followed in constructing defect chemical equations? b. Using the Kroger-Vink notation, write defect chemical equations representing the following reduction/oxidation reactions: 1. The reduction of TiO2, with the formation of oxygen vacancies and electrons. 2. The reduction of TiO2, with the formation of titanium interstitials and electrons. 3. The oxidation of TiO2, with the formation of titanium vacancies and electron holes. 4. The oxidation of TiO2, with the formation of oxygen interstitials and electron holes. c. For each of the reactions (1) to (4) above, explain whether the electronic conductivity is expected to change as a function of the oxygen partial pressure. d. 1. Construct defect chemical equations to describe the dissolution of Sb2O5 in TiO2, with charge compensation by either titanium vacancies of free electrons. 2. In a similar way, write defect chemical equations to describe the dissolution of MgO in TiO2, with charge compensation by either oxygen vacancies or electron holes.

a. The anion (more electronegative) component in an ionic compound is typically a nonmetallic element and designated as X. The cation (more electropositive) component is a metallic element and designated as M. A vacant lattice site is designated as V. Atoms or ions can occupy cation (M) sites, anion (X)...

a. Outline the principles of Pauling’s 5 rules for predicting the crystal structures of ionic solids. b. Show how Pauling’s rules can be used, together with the data give in Tables 1 and 2, to explain the crystal structure of Na2O, which is based on an fcc array of oxide ions. Draw a schematic diagram showing a unit cell of this structure. Explain which interstitial sites are occupied by the Na+ ions. c. Sketch a plan view of the Na2O unit cell, marking on your diagram the height of all ions present. d. Calculate a theoretical value for the density of Na2O, given that the relative atomic masses of sodium and oxygen are 22.99 and 16.00 respectively.

a. The rules of Pauling’s relating crystal structures are: bonding strength, coordination of the polyhedral, linkage for polyhedral, cation evasion, environment homogeneity. b. Na2O When two sodium atoms combine to form a molecule, they share two electrons. Each atom then has a complete shell of eight electrons. The electron structure...

Uncovered lightbulbs may expose food to which type of hazard?

Uncovered lightbulbs may expose food to physical and chemical hazard. Explanation: Food safety is concerns with a variety of hazards, including biological, chemical, and physical. Biological hazards occur due to bacteria, viruses, parasites, and mold in products, which lead to foodborne illness. Chemical hazards happen when toxic chemicals or allergens...

Which of the following is true about energy drinks and mixers a) Carbonation generally slows the rate of alcohol absorption b) A sweet taste can hide the taste of alcohol c) Caffeine helps keep the person aware of how intoxicated he or she is d) All of the above?

A sweet taste can hide the taste of alcohol so answer B is the correct one. Explanation: Most of the energy drinks that people use as mixers are very sweet because they contain a lot of artificial sweeteners. These help to hide the taste of alcohol and makes drinking easier...

Why are proteins considered polymers but lipids not?

Proteins are polymers because they consist of long sequences of amino acids. Lipids have a single structure formed by glycerol and three fatty acids. Explanation: A monomer is a molecule that can attach itself to other monomers, thus forming a more complex structure. A large molecule that is composed of...