Chemistry concepts and calculations

± Introduction to Electroplating Galvanized nails are iron nails that have been

± Introduction to Electroplating Galvanized nails are iron nails that have been plated with zinc to grevent rusting. The relevanid reaction is For a large botch of nails, a manufa…

± Introduction to Electroplating To relate current, time, charge, and mass for e

± Introduction to Electroplating To relate current, time, charge, and mass for electroplating calculations, Electroplating is a form of electrolysis in which a metal is deposited …

± Introduction to Reaction Rates (2) Learning Goal: To calculate average and rel

± Introduction to Reaction Rates (2) Learning Goal: To calculate average and relative reaction rates. Reaction rate can be defined either as the increasein the concentration of a …

± Introduction to Reaction Rates Learning Goal: To calculate average and relativ

± Introduction to Reaction Rates Learning Goal: To calculate average and relative reaction rates. You can measure the rate of a reaction, just like you can measure the speed a jog…

± Introduction to Reaction Rates Learning Goal: To calculate average and relativ

± Introduction to Reaction Rates Learning Goal: To calculate average and relative reaction rates. You can measure the rate of a reaction, just like you can measure the speed a jog…

± Introduction to Reaction Rates Learning Goal: To calculate average and relativ

± Introduction to Reaction Rates Learning Goal: To calculate average and relative reaction rates. You can measure the rate of a reaction, just like you can measure the speed a jog…

± Introduction to Solubility and the Solubility Product Constant Learning Goal:

± Introduction to Solubility and the Solubility Product Constant Learning Goal: To learn how to calculate the solubility from Kspand vice versa. CaF2(s)Ca2+(aq)+2F(aq) Ksp=[Ca2+][…

± Introduction to Units of Concentration mass %=mass of componenttotal mass of s

± Introduction to Units of Concentration mass %=mass of componenttotal mass of solution×100% mole fraction (X)=moles of componenttotal moles of solution molarity (M)=moles of solu…

± Introduction to the Ideal Gas Law Learning Goal: To apply the ideal gas law to

± Introduction to the Ideal Gas Law Learning Goal: To apply the ideal gas law to problems involving temperature, pressure, volume, and moles of a gas. PV=nRT Part A A balloon is f…

± Introduction to the Nernst Equation Consider the reaction Mg(s) + Fe2+ (aq)Mg2

± Introduction to the Nernst Equation Consider the reaction Mg(s) + Fe2+ (aq)Mg2+ (aq) + Fe(s) Learning Goal at 67C , where Fe2+ ] = 2.80mol L-1 and [Mg2+-0.3 10mol L-1 To learn h…

± Introduction to the Nernst Equation Consider the reaction Mg(s) + Fe2+ (aq)Mg2

± Introduction to the Nernst Equation Consider the reaction Mg(s) + Fe2+ (aq)Mg2+ (aq) + Fe(s) Learning Goal at 67C , where Fe2+ ] = 2.80mol L-1 and [Mg2+-0.3 10mol L-1 To learn h…

± Introduction to the Nernst Equation Learning Goal: To learn how to use the Ner

± Introduction to the Nernst Equation Learning Goal: To learn how to use the Nernst equation. E=E2.303RTnFlog10Q Substituting each constant into the equation the result is E=E0.05…

± Introduction to the Nernst Equation Learning Goal: To learn how to use the Ner

± Introduction to the Nernst Equation Learning Goal: To learn how to use the Nernst equation. E=E2.303RTnFlog10Q Substituting each constant into the equation the result is E=E0.05…

± Kinetic Energy A goose is flying south for the winter at a constant speed. Kee

± Kinetic Energy A goose is flying south for the winter at a constant speed. Keep in mind that one mile is 1.61 km , and one pound is 454 g . Part A The goose has a mass of 20.5 l…

± Linking Equilibrium and Kine5cs Formation of nitrosyl bromide Nitrosyl bromide

± Linking Equilibrium and Kine5cs Formation of nitrosyl bromide Nitrosyl bromide, NOBr,s formed in the reaction of nitric oxide, NO, with bromne, Br The generic reaction has the f…

± Masses of Components in a Mixture Part A An organic liquid is a mixture of met

± Masses of Components in a Mixture Part A An organic liquid is a mixture of methyl alcohol CH3 OH) and ethyl alcohol (C2H; OH). A 0.220-g sample of the liquid is burned in an exc…

± Molar Mass from Colligative Properties Part A The molar mass of a compound exp

± Molar Mass from Colligative Properties Part A The molar mass of a compound expresses the ratio of mass to moles tert-Butyl alcohol is a solvent with a Kf of 9.10 C/m and a freez…

± Molarity A solution is a homogeneous mixture of two or more substances. In a s

± Molarity A solution is a homogeneous mixture of two or more substances. In a solution, the component present in a smaller proportion is called the solute while the component pre…

± Molarity The The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better kno

± Molarity The The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-…

± Nuclear Decay Calculations: Radioactive decay is characterized by the equation

± Nuclear Decay Calculations: Radioactive decay is characterized by the equation ln(NtN0)=kt where N0 is the initial amount, Nt is the amount remaining at time t, and k is the rat…

± Nutritional Energy One gram of fat contains 9 Calories, whereas each gram of p

± Nutritional Energy One gram of fat contains 9 Calories, whereas each gram of protein and carbohydrates contains 4 Calories. Part A Alexander wants to know exactly how many bars …

± Nutritional Energy Part A Alexander wants to know exactly how many bars to pac

± Nutritional Energy Part A Alexander wants to know exactly how many bars to pack in his backpack for the journey. To provide a margin of safety, he assumes that he will need as m…

± Percent Ionization A certain weak acid, HA, has a Ka value of 8.8 10-7 Percent

± Percent Ionization A certain weak acid, HA, has a Ka value of 8.8 10-7 Percent ionization can be used to quantify the extent of ionization of an acid in solution and is defined …

± Percent Ionization Percent ionization=[HA] ionized[HA] initial×100% Percent io

± Percent Ionization Percent ionization=[HA] ionized[HA] initial×100% Percent ionization increases with increasing Ka. Strong acids, for which Ka is very large, ionize completely …

± Percent Yield 1.84 g H2 is allowed to react with 10.2 g N2, producing 2.91 g N

± Percent Yield 1.84 g H2 is allowed to react with 10.2 g N2, producing 2.91 g NH3 The Haber-Bosch process is a very important industrial process. In the Haber-Bosch process, hydr…

± Percent Yield 3H2(g)+N2(g)2NH3(g) The ammonia produced in the Haber-Bosch proc

± Percent Yield 3H2(g)+N2(g)2NH3(g) The ammonia produced in the Haber-Bosch process has a wide range of uses, from fertilizer to pharmaceuticals. However, the production of ammoni…

± Percent Yield 3H2(g)+N2(g)2NH3(g) The ammonia produced in the Haber-Bosch proc

± Percent Yield 3H2(g)+N2(g)2NH3(g) The ammonia produced in the Haber-Bosch process has a wide range of uses, from fertilizer to pharmaceuticals. However, the production of ammoni…

± PhET Simulation - Concentration Solutions consist of a solute dissolved into a

± PhET Simulation - Concentration Solutions consist of a solute dissolved into a solvent, e.g., a salt dissolved in water. There is often a need to quantify how much solute is pre…

± PhET Simulation-Concentration Solutions consist of a solute dissolved into a s

± PhET Simulation-Concentration Solutions consist of a solute dissolved into a solvent, eg, a salt dissolved in water. There is often a need to quantify how much solute is present…

± Pressure-Based versus Concentration-Based Equilibrium Constants Part A For the

± Pressure-Based versus Concentration-Based Equilibrium Constants Part A For the reaction 3A(g)+3B(g)C(g) Kc = 32.8 at a temperature of 377 C . Calculate the value of Kp. Express …

± Problem 10.75 with feedback Ammonium nitrate can decompose explosively when he

± Problem 10.75 with feedback Ammonium nitrate can decompose explosively when heated according to the following equation: 2NH4NO3(s) 2N2(g)+4H2O(g)+O2(g) Part A How many liters of…

± Radioactive Decay Calculations If a substance is radioactive, this means that

± Radioactive Decay Calculations If a substance is radioactive, this means that the nucleus is unstable and will therefore decay by any number of processes (alpha decay, beta deca…

± Radioactive Decay Calculations If a substance is radioactive, this means that

± Radioactive Decay Calculations If a substance is radioactive, this means that the nucleus is unstable and will therefore decay by any number of processes (alpha decay, beta deca…

± Radioactive Decay Calculations: If a substance is radioactive, this means that

± Radioactive Decay Calculations: If a substance is radioactive, this means that the nucleus is unstable and will therefore decay by any number of processes (alpha decay, beta dec…

± Reaction Order Part A For the reaction A + B + CD + E, the initial reaction ra

± Reaction Order Part A For the reaction A + B + CD + E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected …

± Reaction Rates To measure the speed of a car, we use miles per hour (miles/hou

± Reaction Rates To measure the speed of a car, we use miles per hour (miles/hour or mi/h or mph). To measure the rate of a reaction we use molar concentration per second(M/s). Pa…

± Reaction Rates and Temperature The rate constant of a chemical reaction increa

± Reaction Rates and Temperature The rate constant of a chemical reaction increased from 0.100 s1 to 2.80 s1 upon raising the temperature from 25.0 C to 41.0 C . Part A Calculate …

± Relating Different Forms of the Equibrium Constant Part A For chemical reactio

± Relating Different Forms of the Equibrium Constant Part A For chemical reactions involving ideal gases, the equilbrium constant K can be expressed either in terms of the concent…

± Relating Different Forms of the Equilibrium Constant For chemical reactions in

± Relating Different Forms of the Equilibrium Constant For chemical reactions involving ideal gases, the equilibrium constant K can be expressed either in terms of the concentrati…

± Solubility Constant Expression Part A Enter the the K sp expression for the so

± Solubility Constant Expression Part A Enter the the Ksp expression for the solid AB2 in terms of the molar solubility x. Express your answer in terms of x. Ksp =??? Part C Enter…

± Solubility of Zinc Hydroxide in Basic Solution The formation constant for the

± Solubility of Zinc Hydroxide in Basic Solution The formation constant for the hydroxo complex, Zn(OH)42, is Kf=4.60×1017. A solubility-product constant, Ksp, corresponds to a re…

± Solubility of Zinc Hydroxide in Basic Solution The formation constant for the

± Solubility of Zinc Hydroxide in Basic Solution The formation constant for the hydroxo complex, Zn(OH)42, is Kf=4.60×1017. A solubility-product constant, Ksp, corresponds to a re…

± Stoichiometric Relationships with Gases P V = n R T relates pressure P , volum

± Stoichiometric Relationships with Gases PV=nRT relates pressure P, volume V, temperature T, and number of moles of a gas, n. The gas constant Requals 0.08206 Latm/(Kmol) or 8.31…

± Stoichiometric Relationships with Gases Part A When heated, calcium carbonate

± Stoichiometric Relationships with Gases Part A When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction What is the mass of calci…

± Study of Plutonium Levels in a Human Population 411 02 dps Hints My Answers Gi

± Study of Plutonium Levels in a Human Population 411 02 dps Hints My Answers Give Up Revlew Pat Radation can be measured according to activity, exposure, or its effect on biologi…

± The Arrhenius Equation Part A The Arrhenius equation shows the relationship be

± The Arrhenius Equation Part A The Arrhenius equation shows the relationship between the rate constant k and the temperature T in kelvins and is typically written as The activati…

± The Arrhenius Equation Part A The activation energy of a certain reaction is 3

± The Arrhenius Equation Part A The activation energy of a certain reaction is 38.6 kJ/mol . At 24 C , the rate constant is 0.0160s1. At what temperature in degrees Celsius would …

± The Common-Ion Effect Part A - Calculate the molar solubility in water Mg(OH)2

± The Common-Ion Effect Part A - Calculate the molar solubility in water Mg(OH)2 is a sparingly soluble compound, in this case a base, with a solubility product, Ksp, of 5.61×10?1…

± The Common-Ion Effect The common-ion effect and solubility The common-ion effe

± The Common-Ion Effect The common-ion effect and solubility The common-ion effect is an application of Le Châtlier's principle, which states that an equilibrium system that is st…

± The Heisenberg Uncertainty Principle Part A What is the uncertainty of the pos

± The Heisenberg Uncertainty Principle Part A What is the uncertainty of the position of the bacterium? A student is examining a bacterium under the microscope. The E coll bacteri…