printable version
... • Equilibrium is a dynamic state, this means that even though it seems that the reaction has stopped, in fact the products are still being made and used up-but at the same speed (rate). • Equilibrium is symbolized by the use of a double arrow ( ) or an equals sign (=) ...
... • Equilibrium is a dynamic state, this means that even though it seems that the reaction has stopped, in fact the products are still being made and used up-but at the same speed (rate). • Equilibrium is symbolized by the use of a double arrow ( ) or an equals sign (=) ...
Problem 1: A brief history of life in the universe
... Atoms in interstellar space seldom meet. When they do (most likely on ice surfaces), they produce radicals and molecules. These species, some of which presumably played a role in the origin of life, have been identified through the use of different spectroscopic methods. Absorption spectra of inters ...
... Atoms in interstellar space seldom meet. When they do (most likely on ice surfaces), they produce radicals and molecules. These species, some of which presumably played a role in the origin of life, have been identified through the use of different spectroscopic methods. Absorption spectra of inters ...
File - Grade 12 Chemistry
... Dispersion forces are very weak intermolecular forces that exist between molecules. When a carbon atom is bonded to another carbon atom, or to a hydrogen atom, the bond is not considered to be polar because the electronegativity difference between carbon atoms is zero and between carbon and hydrogen ...
... Dispersion forces are very weak intermolecular forces that exist between molecules. When a carbon atom is bonded to another carbon atom, or to a hydrogen atom, the bond is not considered to be polar because the electronegativity difference between carbon atoms is zero and between carbon and hydrogen ...
Chapter 12 Packet
... evaporates during respiration. A camel can lose as much as 25% of its body weight from water loss and still survive. An average size camel also has the ability to drink about 200L of water in 3 minutes. If a 450kg camel were to lose 25% of its mass due to water loss, how long would it take it to reg ...
... evaporates during respiration. A camel can lose as much as 25% of its body weight from water loss and still survive. An average size camel also has the ability to drink about 200L of water in 3 minutes. If a 450kg camel were to lose 25% of its mass due to water loss, how long would it take it to reg ...
Topic 4 - Lloyd Crosby
... c. A complex ion is an ion in which a ligand is covalently bound to a metal. d. A ligand is any molecule or ion connected to the central ion or atom of a complex by means of a coordinate covalent bond. e. Coordination number The coordination number is the total number of bonds the metal ion forms wi ...
... c. A complex ion is an ion in which a ligand is covalently bound to a metal. d. A ligand is any molecule or ion connected to the central ion or atom of a complex by means of a coordinate covalent bond. e. Coordination number The coordination number is the total number of bonds the metal ion forms wi ...
Balancing Chemical Reactions
... Things That You Can’t Do When Balancing a Chemical Reaction. One of the most common mistakes when balancing a chemical reaction is to change the subscripts on compounds instead of changing the stoichiometric coefficients. For example, in the presence of a spark, gaseous mixtures of H2 and O2 react f ...
... Things That You Can’t Do When Balancing a Chemical Reaction. One of the most common mistakes when balancing a chemical reaction is to change the subscripts on compounds instead of changing the stoichiometric coefficients. For example, in the presence of a spark, gaseous mixtures of H2 and O2 react f ...
1)A neutral atom has no overall charge, and ion is a
... 5)a)Create graph, will be gone over in class. b)These are the smallest atoms on each of their respective rows, and electrons are being removed from filled orbitals, which have strong stability, which takes a lot of energy to do. c)The valence electrons experience a smaller nuclear force of attractio ...
... 5)a)Create graph, will be gone over in class. b)These are the smallest atoms on each of their respective rows, and electrons are being removed from filled orbitals, which have strong stability, which takes a lot of energy to do. c)The valence electrons experience a smaller nuclear force of attractio ...
1C - Edexcel
... In this reaction there is a colour change from blue to pink. (i) Which word describes both cobalt compounds in equation 1? ...
... In this reaction there is a colour change from blue to pink. (i) Which word describes both cobalt compounds in equation 1? ...
the Language of Chemistry
... Some questions that I have been often asked by the students and parents alike have been—“What do we do by learning Chemistry?” “For a student of Literature or even History what role can Chemistry play?” But the answers came very simply. A mother administering her child a tablet for fever should know ...
... Some questions that I have been often asked by the students and parents alike have been—“What do we do by learning Chemistry?” “For a student of Literature or even History what role can Chemistry play?” But the answers came very simply. A mother administering her child a tablet for fever should know ...
DOC
... conc of products are too large reaction shifts in reverse to reach equilibrium if Q < K conc of reactants are too large reaction shifts forward to reach equilibrium ...
... conc of products are too large reaction shifts in reverse to reach equilibrium if Q < K conc of reactants are too large reaction shifts forward to reach equilibrium ...
Practice Writing AP Questions
... 11. A piece of lithium metal is dropped into a container of nitrogen gas. a. If the container was sealed quickly, what would you expect to happen to the pressure inside the container as the reaction proceeds? 12. Powdered magnesium oxide is added to a container of carbon dioxide gas. a. State the ox ...
... 11. A piece of lithium metal is dropped into a container of nitrogen gas. a. If the container was sealed quickly, what would you expect to happen to the pressure inside the container as the reaction proceeds? 12. Powdered magnesium oxide is added to a container of carbon dioxide gas. a. State the ox ...
Spring 2013 Semester Exam Study Guide (Bonding, Nomenclature
... ____ 95. A chemical equation is balanced when the a. coefficients of the reactants equal the coefficients of the products. b. same number of each kind of atom appears in the reactants and in the products. c. products and reactants are the same chemicals. d. subscripts of the reactants equal the sub ...
... ____ 95. A chemical equation is balanced when the a. coefficients of the reactants equal the coefficients of the products. b. same number of each kind of atom appears in the reactants and in the products. c. products and reactants are the same chemicals. d. subscripts of the reactants equal the sub ...
Belarus, National Final, 2001 (PDF 149K).
... b) Identify compounds C and D and write their Fischer projection formulas. c) Explain why compounds A and B predominantly yield C and D, respectively. d) What type of isomerism is exhibited by compound C at low temperatures? Why are these isomers not observed at ordinary temperatures? e) Draw the st ...
... b) Identify compounds C and D and write their Fischer projection formulas. c) Explain why compounds A and B predominantly yield C and D, respectively. d) What type of isomerism is exhibited by compound C at low temperatures? Why are these isomers not observed at ordinary temperatures? e) Draw the st ...
Enzymes
... CM, are made possible by coupling endergonic movement of ions with a 2nd spontaneous process with a large –ve ΔG, e.g., hydrolysis of ATP • The simplest example of energy coupling in biologic reactions occurs when energy-requiring & energy-yielding reactions share a common intermediate ...
... CM, are made possible by coupling endergonic movement of ions with a 2nd spontaneous process with a large –ve ΔG, e.g., hydrolysis of ATP • The simplest example of energy coupling in biologic reactions occurs when energy-requiring & energy-yielding reactions share a common intermediate ...
chemical equilibrium
... continues on microscopic scale. This is called dynamic equilibrium. 2. Chemical Equilibrium Chemical equilibrium is a state of balance in which the rate of a forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants remain unchanged. H2(g) + I2(g) ...
... continues on microscopic scale. This is called dynamic equilibrium. 2. Chemical Equilibrium Chemical equilibrium is a state of balance in which the rate of a forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants remain unchanged. H2(g) + I2(g) ...
Solution Stoichiometry - Angelo State University
... • For a chemical reaction to occur, the reacting species have to come in close contact with each other. Most chemical reactions are performed in a solution (or in the gas phase) rather than in the solid state. • A solution consists of a smaller amount of one substance, the solute (usually a liquid o ...
... • For a chemical reaction to occur, the reacting species have to come in close contact with each other. Most chemical reactions are performed in a solution (or in the gas phase) rather than in the solid state. • A solution consists of a smaller amount of one substance, the solute (usually a liquid o ...
Electrochemistry Oxidation – Reduction and Oxidation Numbers
... Rules for assigning oxidation numbers: 1. Elements in their most abundant naturally occurring form are assigned an oxidation number of zero. e.g. Na, Fe, Cl2, O2 2. The sum of the oxidation numbers for a compound or formula unit is zero. 3. For a polyatomic ion, the oxidation numbers of the constit ...
... Rules for assigning oxidation numbers: 1. Elements in their most abundant naturally occurring form are assigned an oxidation number of zero. e.g. Na, Fe, Cl2, O2 2. The sum of the oxidation numbers for a compound or formula unit is zero. 3. For a polyatomic ion, the oxidation numbers of the constit ...
Camp 1 - drjosephryan.com Home Page
... The following chemical equation tells us that propane gas and oxygen gas react to form carbon dioxide gas and water vapor C3 H8 ( g) + O2 (g) ...
... The following chemical equation tells us that propane gas and oxygen gas react to form carbon dioxide gas and water vapor C3 H8 ( g) + O2 (g) ...
Chemistry 12 is an intensive course, covering a great deal of
... – sufficient kinetic energy (KE) and favourable geometry are required – to increase the rate of a reaction, one must increase the frequency of successful collisions – energy changes are involved in reactions as bonds are broken and formed – a KE distribution curve can explain how changing temperatur ...
... – sufficient kinetic energy (KE) and favourable geometry are required – to increase the rate of a reaction, one must increase the frequency of successful collisions – energy changes are involved in reactions as bonds are broken and formed – a KE distribution curve can explain how changing temperatur ...
File - wilson science WEBSITE
... 8. For a certain reactions at 25oC, the value of K is 1.2 x 10-3. At 50oC, the value of K is 3.4 x 10-1. This means that the reaction is a. exothermic b. endothermic c. more information is needed 9. Given the equation A(g) ↔ B(g) + 2C(g). At a particular temperature, K = 1.4 x 105. If you initially ...
... 8. For a certain reactions at 25oC, the value of K is 1.2 x 10-3. At 50oC, the value of K is 3.4 x 10-1. This means that the reaction is a. exothermic b. endothermic c. more information is needed 9. Given the equation A(g) ↔ B(g) + 2C(g). At a particular temperature, K = 1.4 x 105. If you initially ...
Chemical Kinetics – Reaction Orders
... It would have been patently impossible, by merely looking at the chemical equation for this reaction, to have come up with this rate law for the reaction between H2 and Br2. Note that as far as the order of this reaction is concerned, one can only say that it is first order in H2; it is impossible t ...
... It would have been patently impossible, by merely looking at the chemical equation for this reaction, to have come up with this rate law for the reaction between H2 and Br2. Note that as far as the order of this reaction is concerned, one can only say that it is first order in H2; it is impossible t ...
1996 Free Response Answers
... 8) The reaction between NO and H2 is believed to occur in the following three-step process. NO + NO <===> N2O2 (fast) N2O2 + H2 ---> N2O + H2O (slow) N2O + H2 ---> N2 + H2O (fast) (a) Write a balanced equation for the overall reaction. (b) Identify the intermediates in the reaction. Explain your rea ...
... 8) The reaction between NO and H2 is believed to occur in the following three-step process. NO + NO <===> N2O2 (fast) N2O2 + H2 ---> N2O + H2O (slow) N2O + H2 ---> N2 + H2O (fast) (a) Write a balanced equation for the overall reaction. (b) Identify the intermediates in the reaction. Explain your rea ...