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Ch. 3 - Chemical Reactions
... D. Writing Equations Two atoms of aluminum react with three units of aqueous copper(II) chloride to produce three atoms of copper and two units of aqueous aluminum chloride. ...
... D. Writing Equations Two atoms of aluminum react with three units of aqueous copper(II) chloride to produce three atoms of copper and two units of aqueous aluminum chloride. ...
Chemical Equation Interpretations – Match the chemical equation
... carbonate in seashells and marble structures. This reaction produces calcium sulfate dissolved in water and carbon dioxide gas. ...
... carbonate in seashells and marble structures. This reaction produces calcium sulfate dissolved in water and carbon dioxide gas. ...
Word and Skeleton Equations
... Word and Skeleton Equations 1. Examine the following word equation: propane + oxygen carbon dioxide + water a) List all the reactants in this reaction. ___________________________________ b) List all the products in this reaction. ___________________________________ c) What is the purpose of the a ...
... Word and Skeleton Equations 1. Examine the following word equation: propane + oxygen carbon dioxide + water a) List all the reactants in this reaction. ___________________________________ b) List all the products in this reaction. ___________________________________ c) What is the purpose of the a ...
Exam 3 - Canvas by Instructure
... B. NH3(g) C. CO2(g) D. All of these gases have EQUAL average kinetic energy E. Cannot determine from information provided 22. MARK ALL THAT APPLY: Which statement(s) below are TRUE? A. At a constant temperature, gaseous helium atoms are ALWAYS moving FASTER than gaseous neon atoms. B. On average, he ...
... B. NH3(g) C. CO2(g) D. All of these gases have EQUAL average kinetic energy E. Cannot determine from information provided 22. MARK ALL THAT APPLY: Which statement(s) below are TRUE? A. At a constant temperature, gaseous helium atoms are ALWAYS moving FASTER than gaseous neon atoms. B. On average, he ...
Chapter 4
... added gradually added to another solution of unknown concentration until the chemical reaction between the two solutions is complete. Equivalence point – the point at which the reaction is complete Indicator – substance that changes color at (or near) the ...
... added gradually added to another solution of unknown concentration until the chemical reaction between the two solutions is complete. Equivalence point – the point at which the reaction is complete Indicator – substance that changes color at (or near) the ...
C2 Knowledge PowerPoint
... Ion = an atom with a positive or negative charge. Cations = metal atoms lose electrons to form positively charged ions called cations. Anions = Non-metal atoms gain electrons to form negatively ions called anions. ...
... Ion = an atom with a positive or negative charge. Cations = metal atoms lose electrons to form positively charged ions called cations. Anions = Non-metal atoms gain electrons to form negatively ions called anions. ...
Document
... Ion = an atom with a positive or negative charge. Cations = metal atoms lose electrons to form positively charged ions called cations. Anions = Non-metal atoms gain electrons to form negatively ions called anions. ...
... Ion = an atom with a positive or negative charge. Cations = metal atoms lose electrons to form positively charged ions called cations. Anions = Non-metal atoms gain electrons to form negatively ions called anions. ...
Chapter 8
... 1. Some oxy-acids, when heated, decompose to form water and the nonmetal oxide. Example: Sulfuric acid is heated Example: Nitric acid is heated 2. Some metallic hydroxides (bases), when heated, decompose to form the metal oxide and water. Example: Sodium hydroxide is heated Example: Calcium hydroxid ...
... 1. Some oxy-acids, when heated, decompose to form water and the nonmetal oxide. Example: Sulfuric acid is heated Example: Nitric acid is heated 2. Some metallic hydroxides (bases), when heated, decompose to form the metal oxide and water. Example: Sodium hydroxide is heated Example: Calcium hydroxid ...
Biochemistry Introduction day 1
... Isotopes: Atoms of an element that have the same number of protons but a different number of neutrons. Ex: Oxygen usually has 8 neutrons but 9 and 10 neutrons can be found in some oxygen atoms. Some isotopes are unstable in the nucleus which makes it more likely to decay and release energy. This i ...
... Isotopes: Atoms of an element that have the same number of protons but a different number of neutrons. Ex: Oxygen usually has 8 neutrons but 9 and 10 neutrons can be found in some oxygen atoms. Some isotopes are unstable in the nucleus which makes it more likely to decay and release energy. This i ...
ACP Chemistry Semester 1 Final Exam - Doc-U-Ment
... B) Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C. C) Two different samples of table salt are found to have the same ratio of sodium to chlorine. D) The atomic mass of bromine is found to be 79.90 amu. E) Nitrogen dioxide alw ...
... B) Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C. C) Two different samples of table salt are found to have the same ratio of sodium to chlorine. D) The atomic mass of bromine is found to be 79.90 amu. E) Nitrogen dioxide alw ...
HOMEWORK : CHAPTER 20
... third ionization energy is 10 times as great. Why does it take so much more energy to remove the third electron? 20.38 Helium contains the same number of electrons in its outer shell as do the alkaline earth metals. Explain why helium is inert whereas the Group 2A metals are not. 20.40 Write chemica ...
... third ionization energy is 10 times as great. Why does it take so much more energy to remove the third electron? 20.38 Helium contains the same number of electrons in its outer shell as do the alkaline earth metals. Explain why helium is inert whereas the Group 2A metals are not. 20.40 Write chemica ...
Chapter 4:Chemical Quantities and Aqueous Reactions:
... expected products. Refer to the solubility rules to determine if solid forms. (D-D) double displacement: AB + CD AD + CB A double displacement reaction starts with two ionic compounds in which the ions exchange to produce new balanced ionic compounds. Always write the cation before the anion and v ...
... expected products. Refer to the solubility rules to determine if solid forms. (D-D) double displacement: AB + CD AD + CB A double displacement reaction starts with two ionic compounds in which the ions exchange to produce new balanced ionic compounds. Always write the cation before the anion and v ...
PRACTICE FINAL EXAM CHEMISTRY 152 This
... Which of the following mixtures would produce an effective buffer solution? a) 1.0 M H2SO4 / 1.0 M NaHSO4 b) 1.0 M H2 SO3 / 1.0 M Na2SO3 c) 1.0 M Na2SO3/ 1.0 M NaHSO3 d) 1.0 M HNO2 / 1.0 M NaF e) 1.0 M HNO3 / 1.0 M NaNO3 ...
... Which of the following mixtures would produce an effective buffer solution? a) 1.0 M H2SO4 / 1.0 M NaHSO4 b) 1.0 M H2 SO3 / 1.0 M Na2SO3 c) 1.0 M Na2SO3/ 1.0 M NaHSO3 d) 1.0 M HNO2 / 1.0 M NaF e) 1.0 M HNO3 / 1.0 M NaNO3 ...
97KB - NZQA
... If the solution turns pale green and a grey deposit forms on the iron metal, then the solution contains lead ions, as Fe is higher on the activity series than Pb. The pale green solution is due to iron(II) ions being formed. The grey deposit is lead. Fe + Pb2+ Fe2+ + Pb If the solution remains col ...
... If the solution turns pale green and a grey deposit forms on the iron metal, then the solution contains lead ions, as Fe is higher on the activity series than Pb. The pale green solution is due to iron(II) ions being formed. The grey deposit is lead. Fe + Pb2+ Fe2+ + Pb If the solution remains col ...
Key To T2 Review For Final Study Guide File - District 196 e
... 8. What is a limiting reactant? Why is this reactant so important? The limiting reactant is the reactant that runs out first in a chemical reaction, therefore determining the amount of product produced. 9. What is an excess reactant? The reactant that there is more than enough of to complete the lim ...
... 8. What is a limiting reactant? Why is this reactant so important? The limiting reactant is the reactant that runs out first in a chemical reaction, therefore determining the amount of product produced. 9. What is an excess reactant? The reactant that there is more than enough of to complete the lim ...
Chemical Reaction Th..
... rxn (2) won’t complete (with a feed CH4=CO2=1 & CO=H2=0, max. conv.=63% at 1000K) ...
... rxn (2) won’t complete (with a feed CH4=CO2=1 & CO=H2=0, max. conv.=63% at 1000K) ...
Lecture syllabus - Linfield College
... - teach foundational principles that underlie the chemical and physical behavior of compounds constructed mainly of carbon atoms - foster scientific critical thinking skills - provide experience in common laboratory techniques and “chemical common sense” in the laboratory - provide practice in writi ...
... - teach foundational principles that underlie the chemical and physical behavior of compounds constructed mainly of carbon atoms - foster scientific critical thinking skills - provide experience in common laboratory techniques and “chemical common sense” in the laboratory - provide practice in writi ...
Thermochemistry Questions
... (ΔH f) of solid Mg(OH)2, • given the following information: • Rxn 1: 2Mg (s) + O2 (g) → 2MgO (s) ΔH = -1203.6 kJ • Rxn 2: Mg(OH)2 (s) → MgO (s) + H2O (l) ΔH = +37.1 kJ • Rxn 3: 2H2O (l) → 2H2 (g) + O2 (g) ΔH = +571.7 kJ ...
... (ΔH f) of solid Mg(OH)2, • given the following information: • Rxn 1: 2Mg (s) + O2 (g) → 2MgO (s) ΔH = -1203.6 kJ • Rxn 2: Mg(OH)2 (s) → MgO (s) + H2O (l) ΔH = +37.1 kJ • Rxn 3: 2H2O (l) → 2H2 (g) + O2 (g) ΔH = +571.7 kJ ...
Chem 1411 Chapter 4
... 1. The oxidation number of any free element is zero. 2. Sum of the oxidation numbers of all the atoms in a species is equal to the net charge of that species. For compounds it is zero. 3. Group I metals are assigned an oxidation number of +1, Group II ,(+2) and Group III (+3). 4. F is always assigne ...
... 1. The oxidation number of any free element is zero. 2. Sum of the oxidation numbers of all the atoms in a species is equal to the net charge of that species. For compounds it is zero. 3. Group I metals are assigned an oxidation number of +1, Group II ,(+2) and Group III (+3). 4. F is always assigne ...
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.