CAPE CHEMISTRY UNIT TWO REVISION PAPER MODULE 1 (a
... biodegradable , the chlorine may be converted by microorganisms into organochlorine compounds which may be harmful. Materials containing chlorine on incineration produces toxic gases such as hydrogen chloride and may also form the very toxic dioxins which are suspected of causing cancer in humans. ( ...
... biodegradable , the chlorine may be converted by microorganisms into organochlorine compounds which may be harmful. Materials containing chlorine on incineration produces toxic gases such as hydrogen chloride and may also form the very toxic dioxins which are suspected of causing cancer in humans. ( ...
Word document format
... It is often used in introductory chemistry classes as a calorimeter. Although the temperature insulating properties of styrofoam cup are fairly good, the cup will absorb some heat. Thus, to obtain the most accurate result, the "coffee cup calorimeter" must be calibrated. This is often performed as a ...
... It is often used in introductory chemistry classes as a calorimeter. Although the temperature insulating properties of styrofoam cup are fairly good, the cup will absorb some heat. Thus, to obtain the most accurate result, the "coffee cup calorimeter" must be calibrated. This is often performed as a ...
Gen Chem Final--review problems Fall 2006
... This is a list of questions to help you study for the final exam. You should know that this list is not all-inclusive. I recommend using this list only in conjunction with going back over the old practice sheets (still online) and exams. ...
... This is a list of questions to help you study for the final exam. You should know that this list is not all-inclusive. I recommend using this list only in conjunction with going back over the old practice sheets (still online) and exams. ...
Unique Solutions
... The chemical reaction between copper chloride and potassium iodide is characterised by : a evolution of chlorine b formation of brown precipitate of cupric iodide c formation of white precipitate of cupric iodide d formation of copper metal How are food products containing fats and oils are packaged ...
... The chemical reaction between copper chloride and potassium iodide is characterised by : a evolution of chlorine b formation of brown precipitate of cupric iodide c formation of white precipitate of cupric iodide d formation of copper metal How are food products containing fats and oils are packaged ...
Resource for Final Exam Prep
... E = q + w [where q is heat and w is work and they are NOT state functions] Sign of q and w and their meanings. Energy profile diagrams for an endo and exothermic reactions Recognize the chemical equation for standard enthalpy of formation, Hof Calculation of H using standard enthalpy of formation, ...
... E = q + w [where q is heat and w is work and they are NOT state functions] Sign of q and w and their meanings. Energy profile diagrams for an endo and exothermic reactions Recognize the chemical equation for standard enthalpy of formation, Hof Calculation of H using standard enthalpy of formation, ...
Problem Set: Empirical and Molecular Formulas
... 6. Titanium (IV) oxide, TiO2, is used as a pigment in paints and as a whitening and coating agent for paper. It can be made by reacting O2 with TiCl4. TiCl4 + O2 TiO2 + 2 Cl2 (already balanced) a) If 4.5 mol of TiCl4 react with 3.5 mol O2, identify both the limiting and excess reactants. b) How ma ...
... 6. Titanium (IV) oxide, TiO2, is used as a pigment in paints and as a whitening and coating agent for paper. It can be made by reacting O2 with TiCl4. TiCl4 + O2 TiO2 + 2 Cl2 (already balanced) a) If 4.5 mol of TiCl4 react with 3.5 mol O2, identify both the limiting and excess reactants. b) How ma ...
Energy and Matter Lecture 5
... Quantities like !E are independent of how you get from the intial to the final state. ...
... Quantities like !E are independent of how you get from the intial to the final state. ...
Chapter 6 Chemical reactions Classification And Mass Relationships
... The Mole • When two things have different sizes you can't get equal numbers by taking equal weights. For example since one grape weighs less than one cabbage, one pound of each will have different numbers. • The same is true for atoms or molecules of different substances. Equal numbers hydrogen and ...
... The Mole • When two things have different sizes you can't get equal numbers by taking equal weights. For example since one grape weighs less than one cabbage, one pound of each will have different numbers. • The same is true for atoms or molecules of different substances. Equal numbers hydrogen and ...
Lecture 4/5 - TCD Chemistry
... regarded as positive since the latter work results in an increase in the energy of the system. In contrast the work done by the system is negative due to the fact that the system loses energy by doing work on the surroundings. The total energy of a system at any given time is termed the internal ene ...
... regarded as positive since the latter work results in an increase in the energy of the system. In contrast the work done by the system is negative due to the fact that the system loses energy by doing work on the surroundings. The total energy of a system at any given time is termed the internal ene ...
Inorganic Chemistry Lesson 3
... (i.e. a chemical formula of water) means there are two hydrogen atoms and one oxygen atom in each water molecule. Is the composition of molecules arbitrary, or there is some law that defines it? If such a law does exists, then is it possible to predict composition of molecules? Yes, it is possible ...
... (i.e. a chemical formula of water) means there are two hydrogen atoms and one oxygen atom in each water molecule. Is the composition of molecules arbitrary, or there is some law that defines it? If such a law does exists, then is it possible to predict composition of molecules? Yes, it is possible ...
STUDY GUIDE
... r activity series (360) r double-replacement reaction (362) r combustion reaction (363) ...
... r activity series (360) r double-replacement reaction (362) r combustion reaction (363) ...
Power point types of chemical rxn
... 1. Elements that form ionic compounds: Magnesium metal reacts with oxygen gas to form magnesium oxide. • 2Mg + O2 2MgO 2. Elements that form covalent compounds: Nitrogen gas and oxygen gas join to form dinitrogen monoxide. • 2N2 + O2 2N2O SYNTHESIS REACTION (iron + sulphur): http://www.youtube.c ...
... 1. Elements that form ionic compounds: Magnesium metal reacts with oxygen gas to form magnesium oxide. • 2Mg + O2 2MgO 2. Elements that form covalent compounds: Nitrogen gas and oxygen gas join to form dinitrogen monoxide. • 2N2 + O2 2N2O SYNTHESIS REACTION (iron + sulphur): http://www.youtube.c ...
Fugacity model
... Descriptor calculation can be made using the software Dragon (Talete srl, Italy). Dragon requires a 3-D structure as input. Often, quantum or molecular mechanics software is used for 3D optimization of chemical structures. However, such software is often expensive and optimization can be very time c ...
... Descriptor calculation can be made using the software Dragon (Talete srl, Italy). Dragon requires a 3-D structure as input. Often, quantum or molecular mechanics software is used for 3D optimization of chemical structures. However, such software is often expensive and optimization can be very time c ...
Physical Chemistry
... Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. Osmosis is a special case of diffusion in which the molecules are water and the concentration gradient occurs across a semipermeable membrane. The semipermeable membrane allows the passag ...
... Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. Osmosis is a special case of diffusion in which the molecules are water and the concentration gradient occurs across a semipermeable membrane. The semipermeable membrane allows the passag ...
Pure substances
... − When pure substances are blended together the components have the same properties as when they are separate o Melting point, boiling point, density, resistance to ...
... − When pure substances are blended together the components have the same properties as when they are separate o Melting point, boiling point, density, resistance to ...
Enzymology Lecture 5 - ASAB-NUST
... Calculations indicate that quantum tunnelling is important in this reaction, but find no role for large-scale protein dynamics in driving the reaction. John D. McGeagh, Kara E. Ranaghan, Adrian J. Mulholland, Biochimica et Biophysica Acta (BBA) Proteins and Proteomics. Volume 1814, Issue 8, August 2 ...
... Calculations indicate that quantum tunnelling is important in this reaction, but find no role for large-scale protein dynamics in driving the reaction. John D. McGeagh, Kara E. Ranaghan, Adrian J. Mulholland, Biochimica et Biophysica Acta (BBA) Proteins and Proteomics. Volume 1814, Issue 8, August 2 ...
IB:Enthalpy Review Questions
... a) What bonds must be broken? Does this process absorb or release energy? b) What bonds are made? Does this process absorb or release energy? c) Explain what is meant by the term “enthalpy change”. d) If the bonds made are less strong than those broken, will the enthalpy change be positive or negati ...
... a) What bonds must be broken? Does this process absorb or release energy? b) What bonds are made? Does this process absorb or release energy? c) Explain what is meant by the term “enthalpy change”. d) If the bonds made are less strong than those broken, will the enthalpy change be positive or negati ...
File
... Lesson 2.4: Combustion Reactions In some areas of the Arctic, large amounts of methane, CH4 (g) are entering the atmosphere. Where is it coming from? As the climate becomes warmer and the ground thaws bacteria produce methane from the remains of dead plants and animals. How do scientists find the me ...
... Lesson 2.4: Combustion Reactions In some areas of the Arctic, large amounts of methane, CH4 (g) are entering the atmosphere. Where is it coming from? As the climate becomes warmer and the ground thaws bacteria produce methane from the remains of dead plants and animals. How do scientists find the me ...
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.