balancing chemical equations worksheet
... The following questions relate to these four steps. a. What symbols should we use to describe the physical states? b. Chemists and other scientists always balance chemical equations. Please explain why this is so important. (Hint, refer to the law of conservation of mass) PART B, read the following ...
... The following questions relate to these four steps. a. What symbols should we use to describe the physical states? b. Chemists and other scientists always balance chemical equations. Please explain why this is so important. (Hint, refer to the law of conservation of mass) PART B, read the following ...
P. Mignon, J. Steyaert, R. Loris, P. Geerlings, and S. Loverix, J. Biol
... Glu-58 side chains are in the direct vicinity of the 2⬘-nucleophile. pH dependence studies have shown Glu-58 to be unprotonated and His-40 to be protonated at the onset of catalysis, proving that Glu-58 is the catalytic base accepting a proton from the 2⬘-nucleophile (7). The protonated His-92 locat ...
... Glu-58 side chains are in the direct vicinity of the 2⬘-nucleophile. pH dependence studies have shown Glu-58 to be unprotonated and His-40 to be protonated at the onset of catalysis, proving that Glu-58 is the catalytic base accepting a proton from the 2⬘-nucleophile (7). The protonated His-92 locat ...
Notes-C12-121
... The boiling points increase with an increase in the number of carbon atom in chain length or ring size. Branching in carbon chain lowers the boiling point of an alkane. Cycloalkanes have higher boiling points than their noncyclic counterparts with the same number of c-atoms ...
... The boiling points increase with an increase in the number of carbon atom in chain length or ring size. Branching in carbon chain lowers the boiling point of an alkane. Cycloalkanes have higher boiling points than their noncyclic counterparts with the same number of c-atoms ...
Chemical reactions alter arrangements of atoms.
... carbon dioxide (CO2) and water (H2O) are the products formed by the reaction. Reactants and products can be elements or compounds, depending on the reaction taking place. During a chemical reaction, bonds between atoms in the reactants are broken and new bonds are formed in the products. When natura ...
... carbon dioxide (CO2) and water (H2O) are the products formed by the reaction. Reactants and products can be elements or compounds, depending on the reaction taking place. During a chemical reaction, bonds between atoms in the reactants are broken and new bonds are formed in the products. When natura ...
Chemistry Chapter 12
... -balanced chemical reactions can be used to make predictions -balanced chemical reactions may be written that do not occur -the equation does not give the exact conditions needed to make the reaction occur -the equation does not describe the behavior of the atoms during the reaction What is the Limi ...
... -balanced chemical reactions can be used to make predictions -balanced chemical reactions may be written that do not occur -the equation does not give the exact conditions needed to make the reaction occur -the equation does not describe the behavior of the atoms during the reaction What is the Limi ...
ap unit 5 worksheet answers
... 3. A fixed quantity of gas at 23⁰C exhibits a pressure of 748 torr and occupies a volume of 10.3 L. Calculate the volume the gas will occupy if the temperature is increased to 145 ⁰C 15 L 4. A fixed quantity of gas at 21⁰C exhibits a pressure of 748 torr and occupies a volume of 10.3 L. Calculate th ...
... 3. A fixed quantity of gas at 23⁰C exhibits a pressure of 748 torr and occupies a volume of 10.3 L. Calculate the volume the gas will occupy if the temperature is increased to 145 ⁰C 15 L 4. A fixed quantity of gas at 21⁰C exhibits a pressure of 748 torr and occupies a volume of 10.3 L. Calculate th ...
Preparation and Properties of Hydrogen
... hydrogen will float. Because of the hydrogen molecule's small size, it will diffuse through many substances. Hydrogen gas is extremely flammable and will react with oxygen to form water with a release of a great deal of heat. The Hindenburg Zeppelin was destroyed in 1937 because of this reaction. He ...
... hydrogen will float. Because of the hydrogen molecule's small size, it will diffuse through many substances. Hydrogen gas is extremely flammable and will react with oxygen to form water with a release of a great deal of heat. The Hindenburg Zeppelin was destroyed in 1937 because of this reaction. He ...
Gaseous fuel
... In this process, the heavy oil charge is passed through a preheater, where the oil is vaporized & heated to cracking temperature (420-4500C). The hot vapour are passed to the catalytic chamber containing catalyst. In a catalytic chamber also the temp. is maintained at 420 to 4500C & a pressure of 1. ...
... In this process, the heavy oil charge is passed through a preheater, where the oil is vaporized & heated to cracking temperature (420-4500C). The hot vapour are passed to the catalytic chamber containing catalyst. In a catalytic chamber also the temp. is maintained at 420 to 4500C & a pressure of 1. ...
Bal Equations notes.cwk (WP)
... actually just a rapid reaction with oxygen. The equations are just the compound to be burned plus oxygen to produce carbon dioxide gas and water vapor. When balancing reactions of this type it is easiest to begin with the carbon atoms then move onto the hydrogen atoms and finish with the oxygen atom ...
... actually just a rapid reaction with oxygen. The equations are just the compound to be burned plus oxygen to produce carbon dioxide gas and water vapor. When balancing reactions of this type it is easiest to begin with the carbon atoms then move onto the hydrogen atoms and finish with the oxygen atom ...
Exam 2-f06 - Clayton State University
... 2.) Which one of the following statements is false? a.) In order for a reaction to occur, reactant molecules must collide with each other. b.) A catalyst alters the rate of a reaction and is neither a product nor a reactant in the overall equation. c.) According to collision theory a three body coll ...
... 2.) Which one of the following statements is false? a.) In order for a reaction to occur, reactant molecules must collide with each other. b.) A catalyst alters the rate of a reaction and is neither a product nor a reactant in the overall equation. c.) According to collision theory a three body coll ...
Chemical Reactions and Stoichiometry
... Indicators of a Chemical Reaction – evidence of a chemical reaction a. Evolution of heat and light (simultaneously) b. Production of a gas (bubbles, odor change) c. Formation of a precipitate (solid, cloudy) d. Color change (not introduced by an outside source such as dye or ink) Characteristics of ...
... Indicators of a Chemical Reaction – evidence of a chemical reaction a. Evolution of heat and light (simultaneously) b. Production of a gas (bubbles, odor change) c. Formation of a precipitate (solid, cloudy) d. Color change (not introduced by an outside source such as dye or ink) Characteristics of ...
chemistry 110 final exam
... B. It will shift to the right, producing more O2 C. No change will occur. D. It will shift to the left, to use up some H2O E. The pressure will decrease. ...
... B. It will shift to the right, producing more O2 C. No change will occur. D. It will shift to the left, to use up some H2O E. The pressure will decrease. ...
kinetic characterisation of catalysts for methanol synthesis
... addition of magnesium and one promoted by zirconium. The kinetic analysis of the experimental results shows that the Cu/Zn/Al/Mg/1 catalyst was the least active. Although TMC-3/1 and Cu/Zn/Al/Mg/2 catalysts were characterised by a higher activity, the most active catalyst system was Cu/Zn/Al/Zr. The ...
... addition of magnesium and one promoted by zirconium. The kinetic analysis of the experimental results shows that the Cu/Zn/Al/Mg/1 catalyst was the least active. Although TMC-3/1 and Cu/Zn/Al/Mg/2 catalysts were characterised by a higher activity, the most active catalyst system was Cu/Zn/Al/Zr. The ...
Chapter 5 - U of L Class Index
... Rate of Reaction (from Chapter 9, 2nd Edition) Although we are always interested if a reaction will or will not occur, another important factor to consider is the rate of reaction. The rate or speed of the reaction is defined as the amount of reactant used up, or amount of product formed, in a certa ...
... Rate of Reaction (from Chapter 9, 2nd Edition) Although we are always interested if a reaction will or will not occur, another important factor to consider is the rate of reaction. The rate or speed of the reaction is defined as the amount of reactant used up, or amount of product formed, in a certa ...
pdfInt 2 Homework Unit 2 1 MB
... Lavender flowers contain an oil. Lavender oil is produced from the (2.27) flowers by steam distillation. The flowers are put into a flask with a little water. Steam from a steam generator is blown through them to extract the oil. The mixture of lavender oil and steam distils over. It is condensed an ...
... Lavender flowers contain an oil. Lavender oil is produced from the (2.27) flowers by steam distillation. The flowers are put into a flask with a little water. Steam from a steam generator is blown through them to extract the oil. The mixture of lavender oil and steam distils over. It is condensed an ...
CHEMICAL REACTIONS
... ________ 13. The reaction in question 12 is an example of a: a. combination reaction. c. single-replacement reaction. b. decomposition reaction. d. double-replacement reaction. ________ 14. When the equation Fe(s) O2(g) y Fe2O3(s) is balanced, what is the ...
... ________ 13. The reaction in question 12 is an example of a: a. combination reaction. c. single-replacement reaction. b. decomposition reaction. d. double-replacement reaction. ________ 14. When the equation Fe(s) O2(g) y Fe2O3(s) is balanced, what is the ...
ASPEN_Home_exercise1_ 27.01.16_with_answers
... 3000 t/h water at 1 bar and 80 °C is feed to a pump which increases the pressure from atmospheric to 10 bar absolute. Subsequently the water is heated up to the 150 ºC by a heat-exchanger (pressure drop 0). In a second heat-exchanger the condensate vaporized so that saturated steam is produced (vapo ...
... 3000 t/h water at 1 bar and 80 °C is feed to a pump which increases the pressure from atmospheric to 10 bar absolute. Subsequently the water is heated up to the 150 ºC by a heat-exchanger (pressure drop 0). In a second heat-exchanger the condensate vaporized so that saturated steam is produced (vapo ...
halogen compounds organic chemistry
... (FeCl3, FeBr3, AlCl3) in the dark, at ordinary temperatures (310-320 K). The Lewis acid acts as a catalyst or a halogen carrier, as its function is to carry the chlorine to the aromatic hydrocarbon. In actual practice, iron filings in the presence of chlorine commonly used. The chlorine reacts with ...
... (FeCl3, FeBr3, AlCl3) in the dark, at ordinary temperatures (310-320 K). The Lewis acid acts as a catalyst or a halogen carrier, as its function is to carry the chlorine to the aromatic hydrocarbon. In actual practice, iron filings in the presence of chlorine commonly used. The chlorine reacts with ...
Student Exploration Sheet: Growing Plants
... substances can combine during a chemical reaction to produce new substances. The substances that undergo change are called reactants. The new substances are products. Sometimes during a chemical reaction, one type of reactant will be used up before the other reactants. This reactant is the limiting ...
... substances can combine during a chemical reaction to produce new substances. The substances that undergo change are called reactants. The new substances are products. Sometimes during a chemical reaction, one type of reactant will be used up before the other reactants. This reactant is the limiting ...
CHEMICAL REACTIONS OBJECTIVES 1. To study reactions
... Reactions that evolve heat are called exothermic reactions. In an exothermic reaction, the products have less energy than the reactants. When the products have more energy than the reactants, the reaction is endothermic. The additional energy needed for formation of the products is absorbed from the ...
... Reactions that evolve heat are called exothermic reactions. In an exothermic reaction, the products have less energy than the reactants. When the products have more energy than the reactants, the reaction is endothermic. The additional energy needed for formation of the products is absorbed from the ...
Honors Chemistry Semester 1 Exam Review
... 11. Why are there no negative temperatures in the Kelvin system? __________________________________________ 12. Which statement describes characteristics of an endothermic reaction? __The sign of H is positive, and the products have less potential energy than the reactants. __The sign of H is positi ...
... 11. Why are there no negative temperatures in the Kelvin system? __________________________________________ 12. Which statement describes characteristics of an endothermic reaction? __The sign of H is positive, and the products have less potential energy than the reactants. __The sign of H is positi ...
Group 2 - UC Davis Canvas
... 11. The bond energy of the noble gas fluorine is too small to offset the energy required to break the F—F bond. 13. Iodide ion is slowly oxidized to iodine, which is yellow-brown in aqueous solution, by oxygen in the air: 4 I − ( aq ) + O 2 ( g ) + 4 H + ( aq ) → 2 I 2 ( aq ) + 2 H 2 O(l) . 15. D ...
... 11. The bond energy of the noble gas fluorine is too small to offset the energy required to break the F—F bond. 13. Iodide ion is slowly oxidized to iodine, which is yellow-brown in aqueous solution, by oxygen in the air: 4 I − ( aq ) + O 2 ( g ) + 4 H + ( aq ) → 2 I 2 ( aq ) + 2 H 2 O(l) . 15. D ...
Catalytic reforming
Catalytic reforming is a chemical process used to convert petroleum refinery naphthas distilled from crude oil (typically having low octane ratings) into high-octane liquid products called reformates, which are premium blending stocks for high-octane gasoline. The process converts low-octane linear hydrocarbons (paraffins) into branched alkanes (isoparaffins) and cyclic naphthenes, which are then partially dehydrogenated to produce high-octane aromatic hydrocarbons. The dehydrogenation also produces significant amounts of byproduct hydrogen gas, which is fed into other refinery processes such as hydrocracking. A side reaction is hydrogenolysis, which produces light hydrocarbons of lower value, such as methane, ethane, propane and butanes.In addition to a gasoline blending stock, reformate is the main source of aromatic bulk chemicals such as benzene, toluene, xylene and ethylbenzene which have diverse uses, most importantly as raw materials for conversion into plastics. However, the benzene content of reformate makes it carcinogenic, which has led to governmental regulations effectively requiring further processing to reduce its benzene content.This process is quite different from and not to be confused with the catalytic steam reforming process used industrially to produce products such as hydrogen, ammonia, and methanol from natural gas, naphtha or other petroleum-derived feedstocks. Nor is this process to be confused with various other catalytic reforming processes that use methanol or biomass-derived feedstocks to produce hydrogen for fuel cells or other uses.