Bonding 1. Which one of the following is most likely to be an ionic
... is 4.0. Starting with equimolar quantities of H2 and I2 and no HI, when equilibrium was established, 0.20 moles of HI was present. How much H2 was used to start the reaction? a. 0.10 mol b. 0.23 mol c. 0.20 mol d. 4.0 mol e. Need to know the volume of the reaction vessel. 8. At a certain temperature ...
... is 4.0. Starting with equimolar quantities of H2 and I2 and no HI, when equilibrium was established, 0.20 moles of HI was present. How much H2 was used to start the reaction? a. 0.10 mol b. 0.23 mol c. 0.20 mol d. 4.0 mol e. Need to know the volume of the reaction vessel. 8. At a certain temperature ...
CHE 106 Chapter 5
... A. A system does 195 kJ of of PV work and absorbs 38 J of heat. B. A chemical reaction in a piston chamber gives off 500 j of heat to its surroundings. The expanding gas moves the piston upward and does 240J of work. C. The chemical reaction from (B) was rerun with the piston in a locked position an ...
... A. A system does 195 kJ of of PV work and absorbs 38 J of heat. B. A chemical reaction in a piston chamber gives off 500 j of heat to its surroundings. The expanding gas moves the piston upward and does 240J of work. C. The chemical reaction from (B) was rerun with the piston in a locked position an ...
1 8. Entropy (Hiroshi Matsuoka) Why do we need entropy? There
... Entropy is extensive We can show that entropy is an “extensive” variable by noting that if we combine two identical systems each of which receives an infinitesimal amount of heat ! Qq s, then the combined system receives the total amount 2! Qq s of heat so that the entropy of the combined system cha ...
... Entropy is extensive We can show that entropy is an “extensive” variable by noting that if we combine two identical systems each of which receives an infinitesimal amount of heat ! Qq s, then the combined system receives the total amount 2! Qq s of heat so that the entropy of the combined system cha ...
Chemical Reactions Notes-1a-1
... Stoichiometric coefficients give the ratio in which the reactants and products exist. The subscripts give the ratio in which the atoms are found in the molecule. ...
... Stoichiometric coefficients give the ratio in which the reactants and products exist. The subscripts give the ratio in which the atoms are found in the molecule. ...
5 Thermochemistry
... Mechanical force; work is done because the force of the coiled spring is opposed as the spring is compressed over a distance. ...
... Mechanical force; work is done because the force of the coiled spring is opposed as the spring is compressed over a distance. ...
Final Review
... 45. Projectiles won’t go as high or as far when they are affected by ______________. 46. ____________ is the ability of an object to do work. It’s measured in Joules. There are many forms of it. 47. _________ is the energy change an object experiences when a force is applied over a given distance. I ...
... 45. Projectiles won’t go as high or as far when they are affected by ______________. 46. ____________ is the ability of an object to do work. It’s measured in Joules. There are many forms of it. 47. _________ is the energy change an object experiences when a force is applied over a given distance. I ...
Cheat Sheet for Chemical Equilibrium
... • The equilibrium constant for these problems is called the solubility product while the solubility is the concentration that is actually dissolved or “x”. • The way to show the dissolving of the solid is AgI Ag+ + Cl‐ • Since the reactants are solids, the equilibrium expression would be Ksp= [p ...
... • The equilibrium constant for these problems is called the solubility product while the solubility is the concentration that is actually dissolved or “x”. • The way to show the dissolving of the solid is AgI Ag+ + Cl‐ • Since the reactants are solids, the equilibrium expression would be Ksp= [p ...
Reactions
... 7. Always consult the Activity Series of metals and non-metals before attempting to write equations for replacement reactions. 8. If a reactant or product is solid, place (s) after the formula 9. If the reactant or product is a liquid, place (l) after the formula 10. If the reactant or product is a ...
... 7. Always consult the Activity Series of metals and non-metals before attempting to write equations for replacement reactions. 8. If a reactant or product is solid, place (s) after the formula 9. If the reactant or product is a liquid, place (l) after the formula 10. If the reactant or product is a ...
Resumen Science I Trimestre II Parcial Definitions: Element: pure
... Ratio: is the amount of elements in a compound. Element join in a specific ratio (amount of the element), according to their mass to form a compound. Ex. 16g Mixture: combination of 2 or more substances that are not chemically combined. (Physical change: so each substance has the same chemical makeu ...
... Ratio: is the amount of elements in a compound. Element join in a specific ratio (amount of the element), according to their mass to form a compound. Ex. 16g Mixture: combination of 2 or more substances that are not chemically combined. (Physical change: so each substance has the same chemical makeu ...
L1 – CHEMISTRY FINAL REVIEW
... or Hydrogen bonds. H-bond is a strong intermolecular bond between the slightly positive Hydrogen end of one water molecule and the slightly neg. oxygen end of an adjacent water molecule. 33. Name 4 unique properties of water due to Hydrogen bonding. high surface tension; capillary action; high speci ...
... or Hydrogen bonds. H-bond is a strong intermolecular bond between the slightly positive Hydrogen end of one water molecule and the slightly neg. oxygen end of an adjacent water molecule. 33. Name 4 unique properties of water due to Hydrogen bonding. high surface tension; capillary action; high speci ...
Thermo chemistry Dealing with
... Energy is the driving force for changes. A change often is associated with a certain amount of energy and amounts of energy can be measured according to the quantities changed. Like other quantities, energy is an extensive property, unlike temperature. Heat is energy in transfer or energy transferre ...
... Energy is the driving force for changes. A change often is associated with a certain amount of energy and amounts of energy can be measured according to the quantities changed. Like other quantities, energy is an extensive property, unlike temperature. Heat is energy in transfer or energy transferre ...
1.ThermoStudentNotes
... 3. _________________ the reactants and products where possible to ______________________ (you must end up with your net equation!) 4. _________ the component enthalpy changes to get the ____________ ...
... 3. _________________ the reactants and products where possible to ______________________ (you must end up with your net equation!) 4. _________ the component enthalpy changes to get the ____________ ...
Thermodynamics
... Shown in the picture below are the pressure versus volume graphs for two thermal processes, in each case moving a system from state A to state B along the straight line shown. In which case is the work done by the system the biggest? ...
... Shown in the picture below are the pressure versus volume graphs for two thermal processes, in each case moving a system from state A to state B along the straight line shown. In which case is the work done by the system the biggest? ...
Unit 6 Study Guide – Chemical Bonding 1. A _ chemical
... 31. Draw a Lewis structure for each of the following molecules, and then use VSEPR theory to predict the molecular geometry of each and specify the type of geometry: a. SCl2 bent trigonal pyramidal b. PI3 c. SiCl3Br tetrahedral d. NO3 trigonal planar e. SO42tetrahedral ...
... 31. Draw a Lewis structure for each of the following molecules, and then use VSEPR theory to predict the molecular geometry of each and specify the type of geometry: a. SCl2 bent trigonal pyramidal b. PI3 c. SiCl3Br tetrahedral d. NO3 trigonal planar e. SO42tetrahedral ...
Welcome to 3FF3! Bio
... • In (R) glyceraldehyde, H is to the left, OH to the right D configuration; if OH is on the left, then it is L • D/L does NOT correlate with R/S • Most naturally occurring sugars are D, e.g. D-glucose • (R)-glyceraldehyde is optically active: rotates plane polarized light (def. of chirality) • (R ...
... • In (R) glyceraldehyde, H is to the left, OH to the right D configuration; if OH is on the left, then it is L • D/L does NOT correlate with R/S • Most naturally occurring sugars are D, e.g. D-glucose • (R)-glyceraldehyde is optically active: rotates plane polarized light (def. of chirality) • (R ...
AP Chem Unit 6
... It has been suggested that hydrogen gas obtained by the decomposition of water might be a substitute for natural gas (principally methane). To compare the energies of combustion of these fuels, the following experiment was carried out using a bomb calorimeter with a heat capacity of 11.3 kJ/°C. When ...
... It has been suggested that hydrogen gas obtained by the decomposition of water might be a substitute for natural gas (principally methane). To compare the energies of combustion of these fuels, the following experiment was carried out using a bomb calorimeter with a heat capacity of 11.3 kJ/°C. When ...
Chapter 19: Thermochemistry II: Entropy and free Energy
... The Third Law and Standard Entropies We have already talked about the fact that as the temperature increases, the random molecular motions of a substance increase and therefore the entropy increases. What happens if you do the opposite, decrease the temperature further and further ? The random ...
... The Third Law and Standard Entropies We have already talked about the fact that as the temperature increases, the random molecular motions of a substance increase and therefore the entropy increases. What happens if you do the opposite, decrease the temperature further and further ? The random ...
AP Chemistry Summer Study Guide
... Electronegativity: The ability of an atom to attract electrons from another atom Empirical Formula: Lowest whole number ratio of atoms in a compound Endothermic: Energy is gained by the system Evaporation: Process of removing water from an aqueous solution. Solute is left behind Exothermic: Energy i ...
... Electronegativity: The ability of an atom to attract electrons from another atom Empirical Formula: Lowest whole number ratio of atoms in a compound Endothermic: Energy is gained by the system Evaporation: Process of removing water from an aqueous solution. Solute is left behind Exothermic: Energy i ...
Thermodynamics1 Relationships Between Heat and Work Internal
... Decrease of internal energy leads to a decrease in internal temperature of the balloon (decrease in kinetic energy inside the balloon) Increase in atmospheric temperature (due to the work done on the atmosphere by the balloon) is transferred into the balloon as heat. Net result = equilibrium; amount ...
... Decrease of internal energy leads to a decrease in internal temperature of the balloon (decrease in kinetic energy inside the balloon) Increase in atmospheric temperature (due to the work done on the atmosphere by the balloon) is transferred into the balloon as heat. Net result = equilibrium; amount ...
Diversity-oriented synthesis - David Spring
... space analysis is used. Each molecule, as a function of its associated chemical descriptors,21–24 resides at a discrete point in chemical space.25 Natural products and currently available compound libraries occupy only a small proportion of bioactive chemical space.8,25 Therefore, there may be value ...
... space analysis is used. Each molecule, as a function of its associated chemical descriptors,21–24 resides at a discrete point in chemical space.25 Natural products and currently available compound libraries occupy only a small proportion of bioactive chemical space.8,25 Therefore, there may be value ...
Chemical thermodynamics
Chemical thermodynamics is the study of the interrelation of heat and work with chemical reactions or with physical changes of state within the confines of the laws of thermodynamics. Chemical thermodynamics involves not only laboratory measurements of various thermodynamic properties, but also the application of mathematical methods to the study of chemical questions and the spontaneity of processes.The structure of chemical thermodynamics is based on the first two laws of thermodynamics. Starting from the first and second laws of thermodynamics, four equations called the ""fundamental equations of Gibbs"" can be derived. From these four, a multitude of equations, relating the thermodynamic properties of the thermodynamic system can be derived using relatively simple mathematics. This outlines the mathematical framework of chemical thermodynamics.