Chemistry EOC Review
... 131. What is the formula for molarity? (Formula provided on EOC). 132. Calculate the molarity of a solution that contains 85 g BaCl2 in 500 mL of water. 133. What is entropy? 134. What does it mean when entropy has a negative value? 135. Indicate if the following will have a positive or negative val ...
... 131. What is the formula for molarity? (Formula provided on EOC). 132. Calculate the molarity of a solution that contains 85 g BaCl2 in 500 mL of water. 133. What is entropy? 134. What does it mean when entropy has a negative value? 135. Indicate if the following will have a positive or negative val ...
2013 - NESACS
... A student wanted to find out how much stomach acid would be neutralized by one TUMS antacid tablet whose active ingredient is CaCO3 (100.8 g/mole). After weighing the tablets in one bottle, the student found that the average mass of TUMS tablet was 1.31 grams. Several TUMS antacid tablets were groun ...
... A student wanted to find out how much stomach acid would be neutralized by one TUMS antacid tablet whose active ingredient is CaCO3 (100.8 g/mole). After weighing the tablets in one bottle, the student found that the average mass of TUMS tablet was 1.31 grams. Several TUMS antacid tablets were groun ...
Chemical Equations
... Reaction Types: Synthesis or Composition • Synthesis are, at this introductory level, almost always the reverse of a decomposition reaction. That means that two pieces join together to produce one, a more complex compounds. These pieces can be elements or simpler compounds. • A + B ---> AB Reaction ...
... Reaction Types: Synthesis or Composition • Synthesis are, at this introductory level, almost always the reverse of a decomposition reaction. That means that two pieces join together to produce one, a more complex compounds. These pieces can be elements or simpler compounds. • A + B ---> AB Reaction ...
Final Exam Study Guide Word document
... Identify solids and liquids held together by ionic bonds, covalent bonds, Van der Waals forces or hydrogen bonding and relate these forces to physical properties such as electrical conductivity, volatility and boiling/melting point temperatures. Chapter 16 Kinetics: Rates and Mechanisms of Chemical ...
... Identify solids and liquids held together by ionic bonds, covalent bonds, Van der Waals forces or hydrogen bonding and relate these forces to physical properties such as electrical conductivity, volatility and boiling/melting point temperatures. Chapter 16 Kinetics: Rates and Mechanisms of Chemical ...
E - Analytical Chemistry
... second through a circuit. The unit of current is the ampere (A). A current of 1 A is a charge of 1 C s-1 flowing past a point in a circuit. The difference in electric potential, E, between two points, is the work needed (or that can be done) when moving an electric charge from one point to the other ...
... second through a circuit. The unit of current is the ampere (A). A current of 1 A is a charge of 1 C s-1 flowing past a point in a circuit. The difference in electric potential, E, between two points, is the work needed (or that can be done) when moving an electric charge from one point to the other ...
Chemistry EOC Review Spring 2013
... 2. Distinguish between hypothesis, theory, and law. 3. Classify the following as having good or poor accuracy and good or poor precision: 4. A scientist experimentally determines the speed of light to be 2.98 x 108 m/sec. In a second experiment, she determines the speed to be 2.99 x 108 m/sec. 5. Th ...
... 2. Distinguish between hypothesis, theory, and law. 3. Classify the following as having good or poor accuracy and good or poor precision: 4. A scientist experimentally determines the speed of light to be 2.98 x 108 m/sec. In a second experiment, she determines the speed to be 2.99 x 108 m/sec. 5. Th ...
Dr. Audrey Lugo`s AP Chemistry Course Syllabus
... These descriptive facts, including the chemistry involved in environmental and societal issues, should not be isolated from the principles being studied but should be taught throughout the course to illustrate and illuminate the principles. The following areas should be covered: 1. Chemical reactivi ...
... These descriptive facts, including the chemistry involved in environmental and societal issues, should not be isolated from the principles being studied but should be taught throughout the course to illustrate and illuminate the principles. The following areas should be covered: 1. Chemical reactivi ...
practice final examination
... The following are some physical and chemical properties of metals and nonmetals. Match the stated properties in column one with the type of element (metal or nonmetal) that can exhibit the given property. State your answer in column two ...
... The following are some physical and chemical properties of metals and nonmetals. Match the stated properties in column one with the type of element (metal or nonmetal) that can exhibit the given property. State your answer in column two ...
Redox Reactions - hrsbstaff.ednet.ns.ca
... Oxidation and reduction reaction = redox rxn Oxidation is loss of electrons and reduction is gain of electrons = transfer of electrons Those 2 reactions are occurring simultaneously ...
... Oxidation and reduction reaction = redox rxn Oxidation is loss of electrons and reduction is gain of electrons = transfer of electrons Those 2 reactions are occurring simultaneously ...
3. What is the empirical formula of a compound that is
... 5. How many grams of NaCl are made if 1.36 × 1024 formula units of NaNO2 react in the presence of excess hydrochloric acid? ...
... 5. How many grams of NaCl are made if 1.36 × 1024 formula units of NaNO2 react in the presence of excess hydrochloric acid? ...
Conservation of Mass Lab
... during a chemical reaction. This means that all chemical reactions must be balanced—the number of atoms, moles, and ultimately the total mass must be conserved during a chemical process. Here are the rules to follow when balancing equations: ...
... during a chemical reaction. This means that all chemical reactions must be balanced—the number of atoms, moles, and ultimately the total mass must be conserved during a chemical process. Here are the rules to follow when balancing equations: ...
KIN1PP - Knockhardy
... Recall and understand the statements in Collision Theory Know six ways to increase the rate of reaction Explain qualitatively how each way increases the rate of reaction Understand how the Distribution of Molecular Energies is used to explain rate increase Understand how the importance of Activation ...
... Recall and understand the statements in Collision Theory Know six ways to increase the rate of reaction Explain qualitatively how each way increases the rate of reaction Understand how the Distribution of Molecular Energies is used to explain rate increase Understand how the importance of Activation ...
Kinetics and Equilibrium
... [H2O] = [CO] = 0.55 mol/L (a) What is the mole fraction of CO(g) in the equilibrium mixture? (b) Using the equilibrium concentrations given above, calculate the value of Kc, the equilibrium constant for the reaction. (c) Determine Kp in terms of Kc for this system. (d) When the system is cooled from ...
... [H2O] = [CO] = 0.55 mol/L (a) What is the mole fraction of CO(g) in the equilibrium mixture? (b) Using the equilibrium concentrations given above, calculate the value of Kc, the equilibrium constant for the reaction. (c) Determine Kp in terms of Kc for this system. (d) When the system is cooled from ...
oxidation and reduction
... f) When a species is oxidised or reduced, what relationship is there between the change in oxidation number of the central atom and the number of electrons lost or gained? Illustrate your answer by referring to the MnO4and Cr2O72- ions, both in acidic solution. ...
... f) When a species is oxidised or reduced, what relationship is there between the change in oxidation number of the central atom and the number of electrons lost or gained? Illustrate your answer by referring to the MnO4and Cr2O72- ions, both in acidic solution. ...
100 Problems and Exercises in Organometallic Chemistry Anil J. Elias
... gives peaks in the range of 1859-1960 cm-1. Compound A on refluxing in toluene releases CO gas and on cooling and further bubbling acetylene gas for 12 hours converts to a new compound B with the empirical formula C8H6O2Mo. The infrared spectrum of this compound shows CO stretching bands in the ran ...
... gives peaks in the range of 1859-1960 cm-1. Compound A on refluxing in toluene releases CO gas and on cooling and further bubbling acetylene gas for 12 hours converts to a new compound B with the empirical formula C8H6O2Mo. The infrared spectrum of this compound shows CO stretching bands in the ran ...
objectives chm 1025 - Miami Dade College
... b. Using the structure of the periodic table to classify elements (e.g., metal, nonmetal, metalloid, noble gas, representative element, transition element, inner transition element, alkali metal, alkaline earth metal, and/or halogen). c. Using the periodic table to identify common patterns such as a ...
... b. Using the structure of the periodic table to classify elements (e.g., metal, nonmetal, metalloid, noble gas, representative element, transition element, inner transition element, alkali metal, alkaline earth metal, and/or halogen). c. Using the periodic table to identify common patterns such as a ...
Energetic
... H = Enthalpy of reaction (or heat of reaction) (4) Heat Change and Bond Energy (a) Energy change in a reaction Any chemical change involves a change in bonding between atoms or ions. Some bonds in reactants are broken and new bonds are formed to give the product. Breaking of bonds absorbs energy a ...
... H = Enthalpy of reaction (or heat of reaction) (4) Heat Change and Bond Energy (a) Energy change in a reaction Any chemical change involves a change in bonding between atoms or ions. Some bonds in reactants are broken and new bonds are formed to give the product. Breaking of bonds absorbs energy a ...
Chemical Equilibrium Stress? What stress? 1
... liquid cannot change, it is fixed and equal to the liquid’s K = [H2]2 [O2] density. [H2O]2 We know that K remains constant for all combinations of reactant and product K[H2O]2 = [H2]2 [O2] = K concentrations at equilibrium. Therefore, since K is constant and the concentration of water is constan ...
... liquid cannot change, it is fixed and equal to the liquid’s K = [H2]2 [O2] density. [H2O]2 We know that K remains constant for all combinations of reactant and product K[H2O]2 = [H2]2 [O2] = K concentrations at equilibrium. Therefore, since K is constant and the concentration of water is constan ...
Chemical Changes and Structure Homework Booklet
... b. State which factor is being studied if experiments C and F are compared. c. Assuming the order of reactivity of metals is Mg>Fe>Cu, state which experiment would show the fastest reaction. ...
... b. State which factor is being studied if experiments C and F are compared. c. Assuming the order of reactivity of metals is Mg>Fe>Cu, state which experiment would show the fastest reaction. ...
Electrochemistry
... A. Any chemical process in which electrons are transferred from one atom to another is an _________-__________ reaction. 1. The name for this type of reaction is often shortened to what is called a ________ reaction. 2. A species _____ _________ when _______ (LEO). A species _____ ________ when ____ ...
... A. Any chemical process in which electrons are transferred from one atom to another is an _________-__________ reaction. 1. The name for this type of reaction is often shortened to what is called a ________ reaction. 2. A species _____ _________ when _______ (LEO). A species _____ ________ when ____ ...
PRE AP CHEMISTRY REVIEW PROBLEMS NON COLLEGE
... The following are problems that students entering AP Chemistry are expected to solve and answer without difficulty. You may use a scientific calculator. A periodic table and other helpful information are provided on the last page. If you are finding the need to refer to a textbook or other resources ...
... The following are problems that students entering AP Chemistry are expected to solve and answer without difficulty. You may use a scientific calculator. A periodic table and other helpful information are provided on the last page. If you are finding the need to refer to a textbook or other resources ...
Lewis acid catalysis
In Lewis acid catalysis of organic reactions, a metal-based Lewis acid acts as an electron pair acceptor to increase the reactivity of a substrate. Common Lewis acid catalysts are based on main group metals such as aluminum, boron, silicon, and tin, as well as many early (titanium, zirconium) and late (iron, copper, zinc) d-block metals. The metal atom forms an adduct with a lone-pair bearing electronegative atom in the substrate, such as oxygen (both sp2 or sp3), nitrogen, sulfur, and halogens. The complexation has partial charge-transfer character and makes the lone-pair donor effectively more electronegative, activating the substrate toward nucleophilic attack, heterolytic bond cleavage, or cycloaddition with 1,3-dienes and 1,3-dipoles.Many classical reactions involving carbon–carbon or carbon–heteroatom bond formation can be catalyzed by Lewis acids. Examples include the Friedel-Crafts reaction, the aldol reaction, and various pericyclic processes that proceed slowly at room temperature, such as the Diels-Alder reaction and the ene reaction. In addition to accelerating the reactions, Lewis acid catalysts are able to impose regioselectivity and stereoselectivity in many cases.Early developments in Lewis acid reagents focused on easily available compounds such as TiCl4, BF3, SnCl4, and AlCl3. The relative strengths of these (and other) Lewis acids may be estimated from NMR spectroscopy by the Childs method or the Gutmann-Beckett method. Over the years, versatile catalysts bearing ligands designed for specific applications have facilitated improvement in both reactivity and selectivity of Lewis acid-catalyzed reactions. More recently, Lewis acid catalysts with chiral ligands have become an important class of tools for asymmetric catalysis.Challenges in the development of Lewis acid catalysis include inefficient catalyst turnover (caused by catalyst affinity for the product) and the frequent requirement of two-point binding for stereoselectivity, which often necessitates the use of auxiliary groups.