homework assignment 2 - the Petersen Home Page
... 1. A 15.40-g sample of a finely-divided mixture of only Fe2S3 and FeS was reacted with excess H2 at elevated temperatures. If the weight percent of Fe2S3 in this mixture is 57.4%, then calculate the total mass in grams of Fe that can be produced. Assume the only other product of these reactions is H ...
... 1. A 15.40-g sample of a finely-divided mixture of only Fe2S3 and FeS was reacted with excess H2 at elevated temperatures. If the weight percent of Fe2S3 in this mixture is 57.4%, then calculate the total mass in grams of Fe that can be produced. Assume the only other product of these reactions is H ...
Chapter 3 Chemical Reactions
... achieved, the amount of each reactant and product remains constant. ...
... achieved, the amount of each reactant and product remains constant. ...
Dr. Audrey Lugo`s AP Chemistry Course Syllabus
... Knowledge of specific facts of chemistry is essential for an understanding of principles and concepts. These descriptive facts, including the chemistry involved in environmental and societal issues, should not be isolated from the principles being studied but should be taught throughout the course t ...
... Knowledge of specific facts of chemistry is essential for an understanding of principles and concepts. These descriptive facts, including the chemistry involved in environmental and societal issues, should not be isolated from the principles being studied but should be taught throughout the course t ...
1 Lecture 11. Redox Chemistry Many elements in the periodic table
... The pE provides a non-dimensional scale (like pH) that expresses the activity of electrons in factors of 10. Eh, called the redox potential, is measured in volts. F is the Faraday constant, which is the electric charge of one mole of electrons (96,500 coulombs). F has a value of 0.059 V at 25°C. Wit ...
... The pE provides a non-dimensional scale (like pH) that expresses the activity of electrons in factors of 10. Eh, called the redox potential, is measured in volts. F is the Faraday constant, which is the electric charge of one mole of electrons (96,500 coulombs). F has a value of 0.059 V at 25°C. Wit ...
Language of chemistry
... Among these the first three states are found on earth naturally. The plasma state is present in the stars. Plasma state is similar to gaseous state but in which some of the particles are in an ...
... Among these the first three states are found on earth naturally. The plasma state is present in the stars. Plasma state is similar to gaseous state but in which some of the particles are in an ...
1C - Edexcel
... In this reaction there is a colour change from blue to pink. (i) Which word describes both cobalt compounds in equation 1? ...
... In this reaction there is a colour change from blue to pink. (i) Which word describes both cobalt compounds in equation 1? ...
X012/13/02
... 2 For this section of the examination you must use an HB pencil and, where necessary, an eraser. 3 Check that the answer sheet you have been given has your name, date of birth, SCN (Scottish Candidate Number) and Centre Name printed on it. Do not change any of these details. 4 If any of ...
... 2 For this section of the examination you must use an HB pencil and, where necessary, an eraser. 3 Check that the answer sheet you have been given has your name, date of birth, SCN (Scottish Candidate Number) and Centre Name printed on it. Do not change any of these details. 4 If any of ...
17 ADSORPTION AND CATALYSIS S MODULE - 5
... that are porous in nature and have rough surfaces are better adsorbents. The extent of adsorption also depends upon the surface area of the solid. Greater the surface area, more is the surface available for adsorption and greater is the adsorption. The surface area depends upon the particle size of ...
... that are porous in nature and have rough surfaces are better adsorbents. The extent of adsorption also depends upon the surface area of the solid. Greater the surface area, more is the surface available for adsorption and greater is the adsorption. The surface area depends upon the particle size of ...
AP Chemistry - cloudfront.net
... (b) Which point corresponds to the critical point? Which point corresponds to the triple point? (c) What curve corresponds to the conditions at which the solid and gas are in equilibrium? (d) Describe what happens when you start at point H and decrease the pressure at constant temperature. (f) is li ...
... (b) Which point corresponds to the critical point? Which point corresponds to the triple point? (c) What curve corresponds to the conditions at which the solid and gas are in equilibrium? (d) Describe what happens when you start at point H and decrease the pressure at constant temperature. (f) is li ...
Physical Chemistry (SCQF level 7)
... acid provides the conjugate base, which can absorb excess hydrogen ions produced by the addition of a small amount of acid. A basic buffer consists of a solution of a weak base and one of its salts. In a basic buffer solution the weak base removes excess hydrogen ions and the conjugate acid provided ...
... acid provides the conjugate base, which can absorb excess hydrogen ions produced by the addition of a small amount of acid. A basic buffer consists of a solution of a weak base and one of its salts. In a basic buffer solution the weak base removes excess hydrogen ions and the conjugate acid provided ...
Synthesis of Aliphatic Nitro Compounds1i2 A simple new
... Preparation of %nitrooctane from b-iodo~ctane.~2-Iodooctane (71.2 g., 0.30 mole) was poured into a stirred solution of 225 ml. dimethyl sulfoxide (DMSO) and 36 g. of sodium nitrite (0.52 mole) contained in a 500 ml. flask immersed in a water bath held a t room temperature. Stirring was continued for ...
... Preparation of %nitrooctane from b-iodo~ctane.~2-Iodooctane (71.2 g., 0.30 mole) was poured into a stirred solution of 225 ml. dimethyl sulfoxide (DMSO) and 36 g. of sodium nitrite (0.52 mole) contained in a 500 ml. flask immersed in a water bath held a t room temperature. Stirring was continued for ...
Introduction to Chemical Reactions
... Law of Conservation of Mass In a chemical reaction, matter is neither created nor destroyed. Atoms won’t change their identity (e.g. a Carbon atom can’t become an Iron atom) This means that you have to have the same number of each type of atom on each side of the chemical equation. Conservation of ...
... Law of Conservation of Mass In a chemical reaction, matter is neither created nor destroyed. Atoms won’t change their identity (e.g. a Carbon atom can’t become an Iron atom) This means that you have to have the same number of each type of atom on each side of the chemical equation. Conservation of ...
Catalysis
Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst. With a catalyst, reactions occur faster and require less activation energy. Because catalysts are not consumed in the catalyzed reaction, they can continue to catalyze the reaction of further quantities of reactant. Often only tiny amounts are required.