Topic 1: Quantitative chemistry (12
... Be able to identify the ultraviolet, visible and infrared regions, and to describe the variation in wavelength, frequency and energy across the spectrum. TOK: Infrared and ultraviolet spectroscopy are dependent on technology for their existence. What are the knowledge implications of this? Distingui ...
... Be able to identify the ultraviolet, visible and infrared regions, and to describe the variation in wavelength, frequency and energy across the spectrum. TOK: Infrared and ultraviolet spectroscopy are dependent on technology for their existence. What are the knowledge implications of this? Distingui ...
CHE 106 Chapter 5
... The standard enthalpy of formation of the most stable form of any element is zero. (That way we don’t need to find out how much energy is required to produce each element involved in a reaction). DH°rxn = •nDH°f (products) - mDH°f (reactants) Where m and n are stoichiometric coefficients from balanc ...
... The standard enthalpy of formation of the most stable form of any element is zero. (That way we don’t need to find out how much energy is required to produce each element involved in a reaction). DH°rxn = •nDH°f (products) - mDH°f (reactants) Where m and n are stoichiometric coefficients from balanc ...
General Chemistry Discretes Test
... For question 3, the correct choice is A . One is asked in this question to determine which of the choices contains a false description of the gas. Under conditions of high pressure and low temperature, the gas is not behaving ideally and corrections must be made for the volume of the gas molecules a ...
... For question 3, the correct choice is A . One is asked in this question to determine which of the choices contains a false description of the gas. Under conditions of high pressure and low temperature, the gas is not behaving ideally and corrections must be made for the volume of the gas molecules a ...
OCR_AS_Level_Chemistry_Unit_F321_Atoms
... o Most are insoluble in polar solvents, like water, because they do not interact with the dipoles in the solvent. Alcohols, however, can hydrogen bond to water molecules o Tend to dissolve in non-polar organic solvents, like cyclohexane, because the solvent can interact with the simple covalent subs ...
... o Most are insoluble in polar solvents, like water, because they do not interact with the dipoles in the solvent. Alcohols, however, can hydrogen bond to water molecules o Tend to dissolve in non-polar organic solvents, like cyclohexane, because the solvent can interact with the simple covalent subs ...
N2(g)
... – the study of transformations of energy – especially as heat and work Used to describe mechanical systems e.g. steam engine all chemical processes (e.g. combustion, dissolving of a solid, expansion of a gas) also involve exchange of heat or work. Terms you’ll use in thermodynamics: Energy – the cap ...
... – the study of transformations of energy – especially as heat and work Used to describe mechanical systems e.g. steam engine all chemical processes (e.g. combustion, dissolving of a solid, expansion of a gas) also involve exchange of heat or work. Terms you’ll use in thermodynamics: Energy – the cap ...
X012/13/02
... 8. A kinetics study was carried out on the reaction between a halogenoalkane, C4H9Br, and aqueous sodium hydroxide. C4H9Br + NaOH → C4H9OH + NaBr The following results were obtained. ...
... 8. A kinetics study was carried out on the reaction between a halogenoalkane, C4H9Br, and aqueous sodium hydroxide. C4H9Br + NaOH → C4H9OH + NaBr The following results were obtained. ...
Chemistry HSC - The Bored of Studies Community
... alkanes and cycloalkanes and smaller amounts of unsaturated including alkenes), which is called feedstock. The feedstock is refined by fractional distillation to obtain alkenes since alkanes are susceptible to combustion and unreactive (not useful as starting material). Ethylene is the most versatil ...
... alkanes and cycloalkanes and smaller amounts of unsaturated including alkenes), which is called feedstock. The feedstock is refined by fractional distillation to obtain alkenes since alkanes are susceptible to combustion and unreactive (not useful as starting material). Ethylene is the most versatil ...
Subject Area Assessment Guides
... element from Group 2 will most often combine with two atoms of an element from Group 17 (e.g., MgCl2) because Group 2 elements have two electrons available for bonding, and Group 17 elements have only one electron position open in the outermost energy level. (Note that some periodic tables indicate ...
... element from Group 2 will most often combine with two atoms of an element from Group 17 (e.g., MgCl2) because Group 2 elements have two electrons available for bonding, and Group 17 elements have only one electron position open in the outermost energy level. (Note that some periodic tables indicate ...
Welcome`to`AP`Chemistry!
... needed as a placeholder, and yet it was included by the person recording the measurement. It must have been recorded as a part of the measurement, making it significant. Zeros to the right of the decimal point, and at the end of the number, are significant figures. Zeros at the End of a Whole Number ...
... needed as a placeholder, and yet it was included by the person recording the measurement. It must have been recorded as a part of the measurement, making it significant. Zeros to the right of the decimal point, and at the end of the number, are significant figures. Zeros at the End of a Whole Number ...
O 95: Metal Substrates: Adsorption of Atoms and Inorganic Molecules
... — ∙Tilman Kisslinger, Pascal Ferstl, M. Alexander Schneider, and Lutz Hammer — Lehrstuhl für Festkörperphysik, Universität Erlangen–Nürnberg, D–91058 Erlangen, Germany ...
... — ∙Tilman Kisslinger, Pascal Ferstl, M. Alexander Schneider, and Lutz Hammer — Lehrstuhl für Festkörperphysik, Universität Erlangen–Nürnberg, D–91058 Erlangen, Germany ...
mole concept and stoichiometry
... 2.5 Gay Lussac’s Law of combining Volumes Sir Gay Lussac found the relationship existing between the volumes of the gaseous reactants and their products. In 1808, he put forward a generalization known as the Gay Lussac’s Law of combining volumes. According to this Law “When gases react together, the ...
... 2.5 Gay Lussac’s Law of combining Volumes Sir Gay Lussac found the relationship existing between the volumes of the gaseous reactants and their products. In 1808, he put forward a generalization known as the Gay Lussac’s Law of combining volumes. According to this Law “When gases react together, the ...
Nature of chemical reaction - Environmental-Chemistry
... • The reaction in which two or more substances combined to form a new compound. • When many Ethylene molecules combine then polyethylene is produced. It is synthesis or addition reaction. • 2Na + Cl2 --- 2NaCl • sodium metal + chlorine gas table salt. ...
... • The reaction in which two or more substances combined to form a new compound. • When many Ethylene molecules combine then polyethylene is produced. It is synthesis or addition reaction. • 2Na + Cl2 --- 2NaCl • sodium metal + chlorine gas table salt. ...
2 - College of Arts and Sciences
... Phase diagrams display the state of a substance at various pressures and temperatures, and the places where equilibria exist between phases. The solid - liquid line marks the melting point at each pressure The liquid – vapor line is the boiling point at that pressure The high critical temperature an ...
... Phase diagrams display the state of a substance at various pressures and temperatures, and the places where equilibria exist between phases. The solid - liquid line marks the melting point at each pressure The liquid – vapor line is the boiling point at that pressure The high critical temperature an ...
Production of Materials by Jason Yu #2
... o Reaction is carried out with an excess of high-pressure steam Catalyst is needed because water molecule itself will not attack the electrons in the ethylene double bond o The electron-rich double bond is likely to be attacked by an ion that has an electron deficiency (e.g. H+ ion); and so acid cat ...
... o Reaction is carried out with an excess of high-pressure steam Catalyst is needed because water molecule itself will not attack the electrons in the ethylene double bond o The electron-rich double bond is likely to be attacked by an ion that has an electron deficiency (e.g. H+ ion); and so acid cat ...
Midterm Practice Exam Key
... that corresponds to the question. DO NOT write your answers directly on the examination. Using a term from the word bank provided below, complete each of the statements that follow. Each blank is worth one mark; therefore, some questions have a total value of two marks. There are MORE terms provided ...
... that corresponds to the question. DO NOT write your answers directly on the examination. Using a term from the word bank provided below, complete each of the statements that follow. Each blank is worth one mark; therefore, some questions have a total value of two marks. There are MORE terms provided ...
Final Exam - Seattle Central College
... – Recognize how IMF’s influence vapor pressure and boiling point. – Given different substances, determine which has the highest boiling point based on IMF’s. • Given a bond or intermolecular force, identify it a polar covalent, nonpolar covalent, ionic, metallic, ion-dipole forces, London/dispersion ...
... – Recognize how IMF’s influence vapor pressure and boiling point. – Given different substances, determine which has the highest boiling point based on IMF’s. • Given a bond or intermolecular force, identify it a polar covalent, nonpolar covalent, ionic, metallic, ion-dipole forces, London/dispersion ...
Today Electrochemistry electrons moving about equilibrium with a
... balance each half reaction separately 1. balance all elements except H & O 2. balance O by adding H2O 3. balance H by adding H+ 4. balance the charge by adding e- add half reactions together to balance electrons multiply each half reaction by proper factor to get the same number of electron i ...
... balance each half reaction separately 1. balance all elements except H & O 2. balance O by adding H2O 3. balance H by adding H+ 4. balance the charge by adding e- add half reactions together to balance electrons multiply each half reaction by proper factor to get the same number of electron i ...
Today Electrochemistry electrons moving about equilibrium with a
... electrons are moving from the Na to the water! start with Na metal end up with Na ions! start with H2O end up with H2 + OH-! ...
... electrons are moving from the Na to the water! start with Na metal end up with Na ions! start with H2O end up with H2 + OH-! ...
Limiting Reactants and Percent Yield
... ___slices of bread ___slices of meat ___slices of cheese ...
... ___slices of bread ___slices of meat ___slices of cheese ...
solutions - Scarsdale Public Schools
... The expected value for i is not always the real value because of ion pairing - at a given instant a small number of ions are paired and thus counted as a single particle. Ion pairing is important in concentrated solutions and where ions have multiple charges. Note that i for nonelectrolytes will = 1 ...
... The expected value for i is not always the real value because of ion pairing - at a given instant a small number of ions are paired and thus counted as a single particle. Ion pairing is important in concentrated solutions and where ions have multiple charges. Note that i for nonelectrolytes will = 1 ...
Electrolysis of water
Electrolysis of water is the decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) due to an electric current being passed through the water.This technique can be used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though currently most industrial methods make hydrogen fuel from natural gas instead.