File - Mc Guckin Science
... o) Electron Configuration: a way of showing where the electrons are found in an atom. Includes the number of electrons found in each quantum level of the atom, arranged in order from lowest to highest energy. p) Orbital: a region in three-dimensional space around the nucleus of an atom where there i ...
... o) Electron Configuration: a way of showing where the electrons are found in an atom. Includes the number of electrons found in each quantum level of the atom, arranged in order from lowest to highest energy. p) Orbital: a region in three-dimensional space around the nucleus of an atom where there i ...
aq - HCC Learning Web
... Balance the Chemical Equations • Aqueous solutions of lead(II) nitrate and potassium iodide produce a yellow precipitate of lead(II) iodide and an aqueous solution of potassium nitrate Pb(NO3)2(aq) + KI(aq) PbI2(s) + KNO3(aq) • Aqueous solutions of calcium nitrate and sodium carbonate react to gi ...
... Balance the Chemical Equations • Aqueous solutions of lead(II) nitrate and potassium iodide produce a yellow precipitate of lead(II) iodide and an aqueous solution of potassium nitrate Pb(NO3)2(aq) + KI(aq) PbI2(s) + KNO3(aq) • Aqueous solutions of calcium nitrate and sodium carbonate react to gi ...
Midterm 2 from Summer 2012
... 45.7 mL of 0.500 M H2SO4 is required to completely neutralize an NaOH solution. How many grams of NaOH were required to carry-out this neutralization? ...
... 45.7 mL of 0.500 M H2SO4 is required to completely neutralize an NaOH solution. How many grams of NaOH were required to carry-out this neutralization? ...
Cool Chemical Reactions Lab Partners: Background Information
... Zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas. Zn + 2 HCl ZnCl2 + H2 The “Hear It Pop” experiment was a single replacement reaction because the reaction started with one compound and one element and the products were also one compound and one element. It followed the pa ...
... Zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas. Zn + 2 HCl ZnCl2 + H2 The “Hear It Pop” experiment was a single replacement reaction because the reaction started with one compound and one element and the products were also one compound and one element. It followed the pa ...
Chemistry - SchoolNotes.com
... 54) How does shielding affect the ionization energy? 55) How many valence electrons are there in an atom of phosphorus? 5 56) What is the electron configuration of the calcium ion, Ca2+? 1s22s22p63s23p6 57) How many electrons does barium have to give up to achieve a noble-gas electron configuration? ...
... 54) How does shielding affect the ionization energy? 55) How many valence electrons are there in an atom of phosphorus? 5 56) What is the electron configuration of the calcium ion, Ca2+? 1s22s22p63s23p6 57) How many electrons does barium have to give up to achieve a noble-gas electron configuration? ...
Chemistry II Exams and Keys 2013 Season
... 10. A sample containing 7.45 grams of KCl is dissolved in sufficient distilled water and reacted with 1000.0 mL 0.300 M AgNO3 solution. Excess silver nitrate solution reacted with the metallic copper according to the following reaction: Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s) The precipitate is f ...
... 10. A sample containing 7.45 grams of KCl is dissolved in sufficient distilled water and reacted with 1000.0 mL 0.300 M AgNO3 solution. Excess silver nitrate solution reacted with the metallic copper according to the following reaction: Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s) The precipitate is f ...
Chemical Equations
... that two molecules of hydrogen need to react for every 1 molecule of oxygen ...
... that two molecules of hydrogen need to react for every 1 molecule of oxygen ...
Week 7 - Acid-base, redox
... Classifying, Writing, and Balancing Redox Reactions We previously classified, wrote, and balanced precipitation, acid-base, and gas-forming reactions. Redox reactions have electron transfer, and that is what sets them apart from the other reaction types. With redox, one atom loses one or more electr ...
... Classifying, Writing, and Balancing Redox Reactions We previously classified, wrote, and balanced precipitation, acid-base, and gas-forming reactions. Redox reactions have electron transfer, and that is what sets them apart from the other reaction types. With redox, one atom loses one or more electr ...
PPT - mvhs-fuhsd.org
... • General rules for predicting entropy changes. 1. Look at the states first. (gases > liquids > solids) 2. If both states are the same then look at the number of moles of reactants and products and decide if there has been an increase in the number of moles or a decrease. 3. If the volume of a conta ...
... • General rules for predicting entropy changes. 1. Look at the states first. (gases > liquids > solids) 2. If both states are the same then look at the number of moles of reactants and products and decide if there has been an increase in the number of moles or a decrease. 3. If the volume of a conta ...
Utah - Wavefunction, Inc.
... Solutions make up many of the ordinary substances encountered in everyday life. The relative amounts of solutes and solvents determine the concentration and the physical properties of a solution. Two important categories of solutions are acids and bases. STANDARD VI: S ...
... Solutions make up many of the ordinary substances encountered in everyday life. The relative amounts of solutes and solvents determine the concentration and the physical properties of a solution. Two important categories of solutions are acids and bases. STANDARD VI: S ...
Synthesis of monoselenanedisulfanediphosphonate by the reaction
... the amount of which is in proportion to the amount of selenite ions, was again titrated with thiosulfate. Selenium was also determined iodometrically in another way. A sample was oxidized by bromine to selenous acid, which has been determined by the reaction (8). The sample was dissolved in a mixtur ...
... the amount of which is in proportion to the amount of selenite ions, was again titrated with thiosulfate. Selenium was also determined iodometrically in another way. A sample was oxidized by bromine to selenous acid, which has been determined by the reaction (8). The sample was dissolved in a mixtur ...
CH100: Fundamentals for Chemistry
... Atoms can neither be created nor destroyed All atoms of a given element are identical Atoms combined chemically in definite whole-number ratios to form compounds Atoms of different elements have different ...
... Atoms can neither be created nor destroyed All atoms of a given element are identical Atoms combined chemically in definite whole-number ratios to form compounds Atoms of different elements have different ...
File
... When electrons move from one area to another they produce an electric current (electricity!). Since redox reactions involve the transfer of electrons, these chemical reactions can be used to produce electricity. ...
... When electrons move from one area to another they produce an electric current (electricity!). Since redox reactions involve the transfer of electrons, these chemical reactions can be used to produce electricity. ...
Acids and Bases
... General rule: The conjugate base of a strong acid is a weak base. Similarly, the conjugate acid of a strong base is a weak acid. ...
... General rule: The conjugate base of a strong acid is a weak base. Similarly, the conjugate acid of a strong base is a weak acid. ...
Print out Reviews # 1 through # 17
... 6. Round off each of the following measurements to 3 significant figures. (A) 98.473 L (B) 12.17 oC (C) 0.00076321 kg (D) 7.485 x 104 mm (E) 57.048 m (F) 1764.9 mL 7. Distinguish between accuracy and precision of a measurement. 8. A technician experimentally determined the boiling point of octane as ...
... 6. Round off each of the following measurements to 3 significant figures. (A) 98.473 L (B) 12.17 oC (C) 0.00076321 kg (D) 7.485 x 104 mm (E) 57.048 m (F) 1764.9 mL 7. Distinguish between accuracy and precision of a measurement. 8. A technician experimentally determined the boiling point of octane as ...
2010 Chemistry Written examination 2
... C. Electrons pass from the reductant to the anode as electricity is produced. D. Electrical energy is converted to chemical energy as the cell is recharged. Question 20 Why is it not possible to plate an object with magnesium metal using an aqueous 1.0 M MgI2 solution as the ...
... C. Electrons pass from the reductant to the anode as electricity is produced. D. Electrical energy is converted to chemical energy as the cell is recharged. Question 20 Why is it not possible to plate an object with magnesium metal using an aqueous 1.0 M MgI2 solution as the ...
Chapter 4: Aqueous Reactions and Solution Stoichiometry
... weighs out a known mass (and, therefore, number of moles) of the solute. The solute is added to a volumetric flask, and solvent is added to the line on the neck of the flask. ...
... weighs out a known mass (and, therefore, number of moles) of the solute. The solute is added to a volumetric flask, and solvent is added to the line on the neck of the flask. ...
Review Packet - Daigneault Chem.is.try
... 1. Compare the parts of an atom based on location, charge and mass: - proton - neutron - electron 2. Define: - isotope - ion - atomic number - mass number - atomic mass unit 3. How many neutrons does U-238 have? 4. Write isotope notation for the particle that contains 17 neutrons and 15 protons. 5. ...
... 1. Compare the parts of an atom based on location, charge and mass: - proton - neutron - electron 2. Define: - isotope - ion - atomic number - mass number - atomic mass unit 3. How many neutrons does U-238 have? 4. Write isotope notation for the particle that contains 17 neutrons and 15 protons. 5. ...
Answers - Scioly.org
... coordinate covalent bonds to the center metal cation? Explain your answer. The lower Kf value for tetraamminecadmium(II) indicates that a larger concentration of ammonia molecules is present in the equilibrium mixture. This implies that the degree of dissociation (the reverse reaction of formation) ...
... coordinate covalent bonds to the center metal cation? Explain your answer. The lower Kf value for tetraamminecadmium(II) indicates that a larger concentration of ammonia molecules is present in the equilibrium mixture. This implies that the degree of dissociation (the reverse reaction of formation) ...
Unit 1: Basic Chemistry for Biology QUIZ STUDY GUIDE Things to
... -Know the difference between a covalent bond and an ionic bond. -Be able to answer questions about a bond similar to the ones on Activity 2. ...
... -Know the difference between a covalent bond and an ionic bond. -Be able to answer questions about a bond similar to the ones on Activity 2. ...
Preview Sample 1
... D) are always some form of carbohydrate. E) are naturally similar to sugars. 102) Alaska Natives have a lower incidence of heart disease even though their diets are high in fat and cholesterol. This may be due to the large amount of ________ in their diets. A) steroids B) omega-3 fatty acids C) trig ...
... D) are always some form of carbohydrate. E) are naturally similar to sugars. 102) Alaska Natives have a lower incidence of heart disease even though their diets are high in fat and cholesterol. This may be due to the large amount of ________ in their diets. A) steroids B) omega-3 fatty acids C) trig ...
Full research publication
... conditions for the delocalization of double bonds in the chelate stabilized by intramolecular hydrogen bonds in the steady-chelating heterocyclic NH. At the same time, the ester moiety of the molecule does not form a chelate-NH depolarizing influence due to the unshared electron pairs of oxygen alko ...
... conditions for the delocalization of double bonds in the chelate stabilized by intramolecular hydrogen bonds in the steady-chelating heterocyclic NH. At the same time, the ester moiety of the molecule does not form a chelate-NH depolarizing influence due to the unshared electron pairs of oxygen alko ...
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.