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HIGH SCHOOL CHEMISTRY REVIEW LECTURE 2: REACTION
... Now we take things just a single step further by applying these concepts of stoichiometry to CHEMICAL REACTIONS. After all, since we know there is conservation of mass in the world, then when a chemical change occurs and new compounds are formed by chemical reaction, there must be a collection of si ...
... Now we take things just a single step further by applying these concepts of stoichiometry to CHEMICAL REACTIONS. After all, since we know there is conservation of mass in the world, then when a chemical change occurs and new compounds are formed by chemical reaction, there must be a collection of si ...
Document
... It will include questions on analysis and evaluation of practical work. Quality of written communication will also be assessed in this section. ...
... It will include questions on analysis and evaluation of practical work. Quality of written communication will also be assessed in this section. ...
AP Chemistry
... (C) The density of the gas (D) The volume of the gas (E) The number of molecules in the gas 97. A sample of gas in a closed container is raised to double its initial pressure while remaining at constant temperature. Which of the following occurs? (A) The volume of the gas doubles. (B) The density of ...
... (C) The density of the gas (D) The volume of the gas (E) The number of molecules in the gas 97. A sample of gas in a closed container is raised to double its initial pressure while remaining at constant temperature. Which of the following occurs? (A) The volume of the gas doubles. (B) The density of ...
IB:Enthalpy Review Questions
... b) Is the reaction endothermic or exothermic? c) Explain what this implies in terms of the chemical potential energy contained in the reactants and products. d) Draw an energy level diagram for this reaction. Clearly label the reactant side, product side, the enthalpy of reaction, and the activation ...
... b) Is the reaction endothermic or exothermic? c) Explain what this implies in terms of the chemical potential energy contained in the reactants and products. d) Draw an energy level diagram for this reaction. Clearly label the reactant side, product side, the enthalpy of reaction, and the activation ...
File
... Gases tend to react faster than solids or liquids: It takes energy to separate particles from each other. In order to burn candle wax, the solid wax has to be melted and then vaporized before it reacts with oxygen. Methane gas is already in the gas state so it burns faster than wax. fast slow Althou ...
... Gases tend to react faster than solids or liquids: It takes energy to separate particles from each other. In order to burn candle wax, the solid wax has to be melted and then vaporized before it reacts with oxygen. Methane gas is already in the gas state so it burns faster than wax. fast slow Althou ...
Complete the following equations
... (d) A compound composed of lithium boron and hydrogen that is used as a reducing agent in organic synthesis: _LiBH4__________ (e) An aluminum compound used for the treatment of municipal water: __Al2(SO4)3__________ ...
... (d) A compound composed of lithium boron and hydrogen that is used as a reducing agent in organic synthesis: _LiBH4__________ (e) An aluminum compound used for the treatment of municipal water: __Al2(SO4)3__________ ...
CHEM 1405 Practice Exam #2 (2015)
... C) Sb and Te D) Po and At C) Ca D) none of the above 8) Which of the following elements are fourth period metalloids? A) Si and Ge B) Ge and As 9) Which of the following is an alkali metal? A) Al B) Fe 10) How many valence electrons does the representative element with the electron configuration 1s2 ...
... C) Sb and Te D) Po and At C) Ca D) none of the above 8) Which of the following elements are fourth period metalloids? A) Si and Ge B) Ge and As 9) Which of the following is an alkali metal? A) Al B) Fe 10) How many valence electrons does the representative element with the electron configuration 1s2 ...
Problem 5. The Second Law of thermodynamics
... kJ·mol–1. The ordinate is log p = 1.2. The ratio of the lengths of the line segments from this point to the borders of the phase coexistence curve (blue and red line segments in the figure below) is equal to the ratio of the number of moles of methane in vapor and liquid phases. One can find that ab ...
... kJ·mol–1. The ordinate is log p = 1.2. The ratio of the lengths of the line segments from this point to the borders of the phase coexistence curve (blue and red line segments in the figure below) is equal to the ratio of the number of moles of methane in vapor and liquid phases. One can find that ab ...
Problem 5. The Second Law of thermodynamics
... kJ·mol–1. The ordinate is log p = 1.2. The ratio of the lengths of the line segments from this point to the borders of the phase coexistence curve (blue and red line segments in the figure below) is equal to the ratio of the number of moles of methane in vapor and liquid phases. One can find that ab ...
... kJ·mol–1. The ordinate is log p = 1.2. The ratio of the lengths of the line segments from this point to the borders of the phase coexistence curve (blue and red line segments in the figure below) is equal to the ratio of the number of moles of methane in vapor and liquid phases. One can find that ab ...
ICSE Board Class X Chemistry Board Paper – 2015
... affinity towards oxygen and so cannot be reduced by carbon. (Note: Error in the question. Zinc oxide can be reduced to zinc metal by using carbon, but aluminium oxide cannot be reduced by a reducing agent.) (ii) Carbon tetrachloride is made of individual covalently bonded molecules, CCl 4. In additi ...
... affinity towards oxygen and so cannot be reduced by carbon. (Note: Error in the question. Zinc oxide can be reduced to zinc metal by using carbon, but aluminium oxide cannot be reduced by a reducing agent.) (ii) Carbon tetrachloride is made of individual covalently bonded molecules, CCl 4. In additi ...
Final Exam Practice Questions for General Chemistry NOTICE TO
... NaOH (aq) + HNO2 (aq) → NaNO2 (aq) + H2O (aq) are examples of a) precipitation, redox, and acid-base reactions, respectively. b) unbalanced reactions. c) precipitation, acid-base, and redox reactions, respectively. d) redox, acid-base, and precipitation reactions, respectively. e) acid-base reaction ...
... NaOH (aq) + HNO2 (aq) → NaNO2 (aq) + H2O (aq) are examples of a) precipitation, redox, and acid-base reactions, respectively. b) unbalanced reactions. c) precipitation, acid-base, and redox reactions, respectively. d) redox, acid-base, and precipitation reactions, respectively. e) acid-base reaction ...
Chemistry II Exams and Answer Keys 2015 Season
... 16. Oxygen (O2) and Ozone (O3) are allotropes of the element oxygen. Which of the following pairs is NOT an allotropic pair? A. Cgraphite and Cdiamond B. rhombic sulfur and amorphous sulfur C. white tin and gray tin D. nitrogen-14 and nitrogen-15 17. Green light breaks the bond between two chlorine ...
... 16. Oxygen (O2) and Ozone (O3) are allotropes of the element oxygen. Which of the following pairs is NOT an allotropic pair? A. Cgraphite and Cdiamond B. rhombic sulfur and amorphous sulfur C. white tin and gray tin D. nitrogen-14 and nitrogen-15 17. Green light breaks the bond between two chlorine ...
www.theallpapers.com
... The alternating oppositely charged ions in 3 dimensions in ionic solids allows a strong attraction between them. The continuous, 3dimensional, tetrahedral, strongly-bonded covalent structures of diamond and silicon(IV) oxide also result in strong attractions and hence high m.pts. The layer nature of ...
... The alternating oppositely charged ions in 3 dimensions in ionic solids allows a strong attraction between them. The continuous, 3dimensional, tetrahedral, strongly-bonded covalent structures of diamond and silicon(IV) oxide also result in strong attractions and hence high m.pts. The layer nature of ...
Ch 17 practice assessment w
... package and sealing. Some perishable items can be sensitive to changes in temperature and humidity. If they are to stay fresh for the longest possible time, they need to be kept in a controlled environment. But, how can this be accomplished if they are traveling in a truck through different weather ...
... package and sealing. Some perishable items can be sensitive to changes in temperature and humidity. If they are to stay fresh for the longest possible time, they need to be kept in a controlled environment. But, how can this be accomplished if they are traveling in a truck through different weather ...
MODULE FOR INTERNATIONAL STANDARD CLASS
... The name system of Ionic Compound by IUPAC Oxidation number can used for indicate “muatan” ionic metal in the ionic ...
... The name system of Ionic Compound by IUPAC Oxidation number can used for indicate “muatan” ionic metal in the ionic ...
CP - Fundamentals
... Now Davis makes a big deal about ions not being able to form molecules. Thus, NaCl is not a molecule; it is just a simple way of describing the appropriate ratio of ions which come together to form regularly packed crystals. For example, shown in Figure 2 are ball and stick and space-filled models o ...
... Now Davis makes a big deal about ions not being able to form molecules. Thus, NaCl is not a molecule; it is just a simple way of describing the appropriate ratio of ions which come together to form regularly packed crystals. For example, shown in Figure 2 are ball and stick and space-filled models o ...
Solutions (DOC format, upgraded July 20)
... kJ·mol–1. The ordinate is log p = 1.2. The ratio of the lengths of the line segments from this point to the borders of the phase coexistence curve (blue and red line segments in the figure below) is equal to the ratio of the number of moles of methane in vapor and liquid phases. One can find that ab ...
... kJ·mol–1. The ordinate is log p = 1.2. The ratio of the lengths of the line segments from this point to the borders of the phase coexistence curve (blue and red line segments in the figure below) is equal to the ratio of the number of moles of methane in vapor and liquid phases. One can find that ab ...
BONUS: Which line in the above graph represents G for the reaction
... the addition of what ion would effectively increase the S2– concentration? (A) ...
... the addition of what ion would effectively increase the S2– concentration? (A) ...
Indian National Chemistry Olympiad Theory 2014
... Aluminum is produced from bauxite by electro-reduction of alumina. The process is known as Hall- Herault’s process Alumina is dissolved in a conducting medium like cryolite Na3AlF6, as it cannot conduct electricity in the molten state. The temperature of melting of cryolite is reduced by adding cond ...
... Aluminum is produced from bauxite by electro-reduction of alumina. The process is known as Hall- Herault’s process Alumina is dissolved in a conducting medium like cryolite Na3AlF6, as it cannot conduct electricity in the molten state. The temperature of melting of cryolite is reduced by adding cond ...
New Advances in Catalytic Systems for Conversion of CH4 and CO2
... of natural enzymes, chemically mimic MMO has been widely investigated since 1990’s. Although many different kinds of mimic enzymes have the ability to activate the C-H bond in methane to a certain extent, a rule manifests that the more similar a structure it has, the higher oxidative activity it exh ...
... of natural enzymes, chemically mimic MMO has been widely investigated since 1990’s. Although many different kinds of mimic enzymes have the ability to activate the C-H bond in methane to a certain extent, a rule manifests that the more similar a structure it has, the higher oxidative activity it exh ...
Chapter 24. Organic Chemistry
... The outermost electron-occupied shell of an atom Valence electrons are mostly responsible for covalent bonding Valence-shell electron-pair repulsion model Geometric arrangement of electron pairs around a central atom in terms of the electrostatic repulsion between electron pairs A molecule forms a g ...
... The outermost electron-occupied shell of an atom Valence electrons are mostly responsible for covalent bonding Valence-shell electron-pair repulsion model Geometric arrangement of electron pairs around a central atom in terms of the electrostatic repulsion between electron pairs A molecule forms a g ...
10/18/11 - Note: Once it is downloaded, click SET
... - the number of atoms in exactly 12 grams of the carbon isotope-12 - 1 mole = atomic mass on periodic table Molar Mass- the mass, in grams, of 1 mole of an element - g/mol - the mass of 1 mole of an element = the element’s atomic mass (from P.T.) Avogadro’s Number- the number of particles in 1 mole ...
... - the number of atoms in exactly 12 grams of the carbon isotope-12 - 1 mole = atomic mass on periodic table Molar Mass- the mass, in grams, of 1 mole of an element - g/mol - the mass of 1 mole of an element = the element’s atomic mass (from P.T.) Avogadro’s Number- the number of particles in 1 mole ...
General Chemistry I - University of Toledo
... 6.1 Write ground-state electron configurations for main group and transition metal ions. 6.2 Determine the number of unpaired electrons in a transition metal ion. 6.3 Predict the relative size of anions, cations, and atoms. 6.4 Predict the relative size of isoelectronic ions. 6.5 Order elements from ...
... 6.1 Write ground-state electron configurations for main group and transition metal ions. 6.2 Determine the number of unpaired electrons in a transition metal ion. 6.3 Predict the relative size of anions, cations, and atoms. 6.4 Predict the relative size of isoelectronic ions. 6.5 Order elements from ...
to view
... (ii) In the crystal of FeO, some of the Fe2+ cations are replaced by Fe3+ ions. Three Fe2+ ions are replaced by two Fe3+ ions to make up for the loss of positive charge. Thus there would be less amount of metal as compared to stoichiometric ...
... (ii) In the crystal of FeO, some of the Fe2+ cations are replaced by Fe3+ ions. Three Fe2+ ions are replaced by two Fe3+ ions to make up for the loss of positive charge. Thus there would be less amount of metal as compared to stoichiometric ...
Redox
![](https://commons.wikimedia.org/wiki/Special:FilePath/NaF.gif?width=300)
Redox reactions include all chemical reactions in which atoms have their oxidation state changed; in general, redox reactions involve the transfer of electrons between species. The term ""redox"" comes from two concepts involved with electron transfer: reduction and oxidation. It can be explained in simple terms: Oxidation is the loss of electrons or an increase in oxidation state by a molecule, atom, or ion. Reduction is the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.Although oxidation reactions are commonly associated with the formation of oxides from oxygen molecules, these are only specific examples of a more general concept of reactions involving electron transfer.Redox reactions, or oxidation-reduction reactions, have a number of similarities to acid–base reactions. Like acid–base reactions, redox reactions are a matched set, that is, there cannot be an oxidation reaction without a reduction reaction happening simultaneously. The oxidation alone and the reduction alone are each called a half-reaction, because two half-reactions always occur together to form a whole reaction. When writing half-reactions, the gained or lost electrons are typically included explicitly in order that the half-reaction be balanced with respect to electric charge.Though sufficient for many purposes, these descriptions are not precisely correct. Oxidation and reduction properly refer to a change in oxidation state — the actual transfer of electrons may never occur. The oxidation state of an atom is the fictitious charge that an atom would have if all bonds between atoms of different elements were 100% ionic. Thus, oxidation is better defined as an increase in oxidation state, and reduction as a decrease in oxidation state. In practice, the transfer of electrons will always cause a change in oxidation state, but there are many reactions that are classed as ""redox"" even though no electron transfer occurs (such as those involving covalent bonds).There are simple redox processes, such as the oxidation of carbon to yield carbon dioxide (CO2) or the reduction of carbon by hydrogen to yield methane (CH4), and more complex processes such as the oxidation of glucose (C6H12O6) in the human body through a series of complex electron transfer processes.