Export To Word
... Standard: Matter A. A working definition of matter is that it takes up space, has mass, and has measurable properties. Matter is comprised of atomic, subatomic, and elementary particles. B. Electrons are key to defining chemical and some physical properties, reactivity, and molecular structures. Rep ...
... Standard: Matter A. A working definition of matter is that it takes up space, has mass, and has measurable properties. Matter is comprised of atomic, subatomic, and elementary particles. B. Electrons are key to defining chemical and some physical properties, reactivity, and molecular structures. Rep ...
Sample 112 Final
... If 1.5 mol NO2, 3.0 mol O2and 2.0 mol NO3 are introduced into a 1.00 liter flask, what changes in concentration (if any) will be observed as the system reaches equilibrium? a) [NO2] increases; [O2] increases; [NO3] decreases b) [NO2] increases; [O2] decreases; [NO3] decreases c) [NO2] decreases; [O2 ...
... If 1.5 mol NO2, 3.0 mol O2and 2.0 mol NO3 are introduced into a 1.00 liter flask, what changes in concentration (if any) will be observed as the system reaches equilibrium? a) [NO2] increases; [O2] increases; [NO3] decreases b) [NO2] increases; [O2] decreases; [NO3] decreases c) [NO2] decreases; [O2 ...
green chemistry
... control during syntheses to minimize or eliminate the formation of byproducts. 6. Minimize the potential for accidents: Design chemicals and their forms (solid, liquid, or gas) to minimize the potential for chemical accidents including explosions, fires, and releases to the environment. 7. Prevent w ...
... control during syntheses to minimize or eliminate the formation of byproducts. 6. Minimize the potential for accidents: Design chemicals and their forms (solid, liquid, or gas) to minimize the potential for chemical accidents including explosions, fires, and releases to the environment. 7. Prevent w ...
Reactions
... occurs between ions in aqueous solution. A reaction will occur when a pair of ions come together to produce at least one of the following: 1. a precipitate 2. a gas 3. water or some other non-ionized substance. ...
... occurs between ions in aqueous solution. A reaction will occur when a pair of ions come together to produce at least one of the following: 1. a precipitate 2. a gas 3. water or some other non-ionized substance. ...
CHEMISTRY I Final..#1..rev 4KEY
... a. The atom is a hard sphereelectrons exist in orbitals outside the nucleusmost of the atom is empty space with a small dense nucleus. b. The atom is a hard spheremost of the atom is empty space with a small dense nucleuselectrons exist in orbitals outside the nucleus c. Most of the atom is empt ...
... a. The atom is a hard sphereelectrons exist in orbitals outside the nucleusmost of the atom is empty space with a small dense nucleus. b. The atom is a hard spheremost of the atom is empty space with a small dense nucleuselectrons exist in orbitals outside the nucleus c. Most of the atom is empt ...
Midterm 1 2009 (PDF format)
... An organic compound was found to contain only C, H, and Cl. When a 1.50 g sample of the compound was completely combusted in air, 3.52 g of CO2 was formed. In a separate experiment the chlorine in a 1.00 g sample of the compound was converted to 1.27 g of AgCl. Determine the empirical formula of the ...
... An organic compound was found to contain only C, H, and Cl. When a 1.50 g sample of the compound was completely combusted in air, 3.52 g of CO2 was formed. In a separate experiment the chlorine in a 1.00 g sample of the compound was converted to 1.27 g of AgCl. Determine the empirical formula of the ...
Introduction_to_Chemical_Reactions_2011
... energy. The H0rxn is negative because Hfinal is less than Hinitial. In other words, the system lost energy. (sign goes with the system) The majority of chemical reactions are exothermic because nature favors a low chemical potential energy. ...
... energy. The H0rxn is negative because Hfinal is less than Hinitial. In other words, the system lost energy. (sign goes with the system) The majority of chemical reactions are exothermic because nature favors a low chemical potential energy. ...
ACP Chemistry Semester 1 Final Exam - Doc-U-Ment
... D) AgC2H3O2 + Cu(NO3)2 E) None of the above solution pairs will produce a precipitate. 12) Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of Na2CO3 and HCl are mixed. A) 2 H+(aq) + CO32-(aq) → H2CO3(s) B) 2 Na+(aq) + CO32-(aq) + 2 H+(aq) + 2 Cl-(aq) → H2CO3( ...
... D) AgC2H3O2 + Cu(NO3)2 E) None of the above solution pairs will produce a precipitate. 12) Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of Na2CO3 and HCl are mixed. A) 2 H+(aq) + CO32-(aq) → H2CO3(s) B) 2 Na+(aq) + CO32-(aq) + 2 H+(aq) + 2 Cl-(aq) → H2CO3( ...
Chapter 8
... designates an aqueous solution, one that is dissolved in water, placed after the formula. 8. __________ indicates that heat is supplied to the reaction 9. __________ a formula written above or below the yield sign indicates it is used as a catalyst. In this case, platinum. G. What is a skeleton equa ...
... designates an aqueous solution, one that is dissolved in water, placed after the formula. 8. __________ indicates that heat is supplied to the reaction 9. __________ a formula written above or below the yield sign indicates it is used as a catalyst. In this case, platinum. G. What is a skeleton equa ...
Types of Chemical Reactions
... Evolution of heat—noted as a temperature increase. Absorption of heat—noted as a temperature decrease. Plating out of one metal on another. Decomposition, pitting, or the disappearance of a solid metal ...
... Evolution of heat—noted as a temperature increase. Absorption of heat—noted as a temperature decrease. Plating out of one metal on another. Decomposition, pitting, or the disappearance of a solid metal ...
Chemical Reactions
... carbon reacts with oxygen to yield carbon dioxide. The chemical equation for this reaction, C + O2 CO2, contains the same information as the English sentence but has quantitative meaning as well. ...
... carbon reacts with oxygen to yield carbon dioxide. The chemical equation for this reaction, C + O2 CO2, contains the same information as the English sentence but has quantitative meaning as well. ...
Discussion 8
... vertial arrows, however, show a specific range on the energy scale and represents the change in energy associated with the process on the diagram. For example, image (a) below shows two different states, A and B, with their associated energies, 100 kJ and 200 kJ, respectively. The states are drawn a ...
... vertial arrows, however, show a specific range on the energy scale and represents the change in energy associated with the process on the diagram. For example, image (a) below shows two different states, A and B, with their associated energies, 100 kJ and 200 kJ, respectively. The states are drawn a ...
Chemical Reactions: Helpful Hints
... (Ag+ in the 1+ oxidation state). Did you observe a band of shiny metal being formed at the interface of the solid and the solution (Hmm, what could that be? What was in solution that would give such luster?) Reaction 11 involves two metals that reacted to become ions in aqueous solution (i.e. both g ...
... (Ag+ in the 1+ oxidation state). Did you observe a band of shiny metal being formed at the interface of the solid and the solution (Hmm, what could that be? What was in solution that would give such luster?) Reaction 11 involves two metals that reacted to become ions in aqueous solution (i.e. both g ...
C3.1 The Periodic Table
... gram, or calories per gram) Explain how the energy change of a reaction in solution can be calculated from the measured temperature change in an insulated container, for example when solids react with water or for neutralisation reactions Recognise simple energy level diagrams for exothermic and end ...
... gram, or calories per gram) Explain how the energy change of a reaction in solution can be calculated from the measured temperature change in an insulated container, for example when solids react with water or for neutralisation reactions Recognise simple energy level diagrams for exothermic and end ...
Theoretical problems (official version)
... Fig. 1. (a) The structure of graphene. Spheres are carbon atoms. They are arranged in hexagons. The area of one carbon hexagon is 5.16∙10-20 m2 (b) Crystal lattice of graphite. Three graphene layers are shown Such atomic structure was long considered to be unstable. However, in 2004 Andrey Geim and ...
... Fig. 1. (a) The structure of graphene. Spheres are carbon atoms. They are arranged in hexagons. The area of one carbon hexagon is 5.16∙10-20 m2 (b) Crystal lattice of graphite. Three graphene layers are shown Such atomic structure was long considered to be unstable. However, in 2004 Andrey Geim and ...
19a - The BOD
... “Dissolved oxygen” is there. It is a measure of how much oxygen is dissolved in a water sample. It is a measure of oxygen content. BOD is the amount of oxygen that would be consumed to completely decompose the organic matter in a water sample. It is not an indication of oxygen content. It is an indi ...
... “Dissolved oxygen” is there. It is a measure of how much oxygen is dissolved in a water sample. It is a measure of oxygen content. BOD is the amount of oxygen that would be consumed to completely decompose the organic matter in a water sample. It is not an indication of oxygen content. It is an indi ...
Chapter 5 Chemical Equilibrium 1 State whether each of the
... pressure is decreased? Why? The equilibrium will shift to the left to increase the pressure, since thee are 1.5 moles of gas on the left and only 1 mole of gas on the right. 11. Graphite is the standard state of carbon. Why do diamonds exist at 25cC and 1 atm? Diamond is thermodynamically unstable, ...
... pressure is decreased? Why? The equilibrium will shift to the left to increase the pressure, since thee are 1.5 moles of gas on the left and only 1 mole of gas on the right. 11. Graphite is the standard state of carbon. Why do diamonds exist at 25cC and 1 atm? Diamond is thermodynamically unstable, ...
Topic 16 Some non-metals and their compounds notes
... this has fewer moles of gas. Therefore, the yield of sulfur(VI) oxide will increase. When pure oxygen is used, the volume reduction is from 3 volumes to 2. If air is used instead of oxygen, one volume of oxygen will be accompanied by 4 volumes of unreactive nitrogen. Therefore the volume reduction w ...
... this has fewer moles of gas. Therefore, the yield of sulfur(VI) oxide will increase. When pure oxygen is used, the volume reduction is from 3 volumes to 2. If air is used instead of oxygen, one volume of oxygen will be accompanied by 4 volumes of unreactive nitrogen. Therefore the volume reduction w ...
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.