ACS Practice Test 1
... They lower the vapor pressure of water when dissolved in it. (E) They raise the boiling point of water when dissolved in it. 42. The addition of a catalyst in a chemical reaction (A) increases the concentration of products at equilibrium. (B) increases the fraction of reactant molecules with a given ...
... They lower the vapor pressure of water when dissolved in it. (E) They raise the boiling point of water when dissolved in it. 42. The addition of a catalyst in a chemical reaction (A) increases the concentration of products at equilibrium. (B) increases the fraction of reactant molecules with a given ...
High School Physical Science Glossary
... gravitational force- fundamental force that tends to draw two masses together, increasing as the masses are increased or distance between them is decreased gravitational potential energy- the amount of stored energy an object has based on its position relative to Earth (GPE = mgh) ground state- posi ...
... gravitational force- fundamental force that tends to draw two masses together, increasing as the masses are increased or distance between them is decreased gravitational potential energy- the amount of stored energy an object has based on its position relative to Earth (GPE = mgh) ground state- posi ...
Lecture Resource ()
... Secondary and tertiary amines can be prepared from imines and enamines by reducing the imines or enamines ...
... Secondary and tertiary amines can be prepared from imines and enamines by reducing the imines or enamines ...
Module 3 -- Lesson 4
... between reactant particles will increase. The result is an increase in the reaction rate toward the right, or in other words, an increase in the rate of the forward reaction. Then, as the amount of NH3 increases, the rate of the reverse reaction also increases. However, the net result to the system ...
... between reactant particles will increase. The result is an increase in the reaction rate toward the right, or in other words, an increase in the rate of the forward reaction. Then, as the amount of NH3 increases, the rate of the reverse reaction also increases. However, the net result to the system ...
File
... 19. What is the name of the process in which the nucleus of an atom of one element is changed into the nucleus of an atom of a different element? A) decomposition C) substitution ...
... 19. What is the name of the process in which the nucleus of an atom of one element is changed into the nucleus of an atom of a different element? A) decomposition C) substitution ...
Sample % Sulfate Absolute Deviation A 44.02 B 44.11 C 43.98 D
... 1. Conservation of Mass (Lavoisier, 1743-1794): The total mass of products of a chemical reaction is exactly the same as the mass of reactants consumed by the reaction. 2. Law of Definite Proportions (Proust, 1754-1826): A given compound always contains exactly the same proportion of elements by mas ...
... 1. Conservation of Mass (Lavoisier, 1743-1794): The total mass of products of a chemical reaction is exactly the same as the mass of reactants consumed by the reaction. 2. Law of Definite Proportions (Proust, 1754-1826): A given compound always contains exactly the same proportion of elements by mas ...
Contents and Concepts
... 1. When is a large negative number (more negative than about – 10 kJ), the reaction is spontaneous as written, and reactants transform almost entirely into products when equilibrium is reached. 2. When ∆Go is a large positive number (more positive than about + 10 kJ), the reaction is not spontaneous ...
... 1. When is a large negative number (more negative than about – 10 kJ), the reaction is spontaneous as written, and reactants transform almost entirely into products when equilibrium is reached. 2. When ∆Go is a large positive number (more positive than about + 10 kJ), the reaction is not spontaneous ...
Oxidation-Reduction Reactions Oxidation-Reduction
... Compound The sum of the oxidation numbers of s and ions the atoms in a compound is zero. The sum in a polyatomic ion equals the charge on the ion. ...
... Compound The sum of the oxidation numbers of s and ions the atoms in a compound is zero. The sum in a polyatomic ion equals the charge on the ion. ...
CHEM1100 Practice Exam 2 You have 120 minutes to complete this
... You have 120 minutes to complete this exam. Answer all questions. To receive credit you must show your reasoning and all calculations in the bluebook. Report numerical answers with the correct number of significant figures and with correct units. No speaking is allowed during the exam. You must use ...
... You have 120 minutes to complete this exam. Answer all questions. To receive credit you must show your reasoning and all calculations in the bluebook. Report numerical answers with the correct number of significant figures and with correct units. No speaking is allowed during the exam. You must use ...
Name: 1) What is the oxidation number of sulfur in H SO ? A)
... In any oxidation-reduction reaction, the total number of electrons gained is A) greater than the total number of electrons lost B) equal to the total number of electrons lost ...
... In any oxidation-reduction reaction, the total number of electrons gained is A) greater than the total number of electrons lost B) equal to the total number of electrons lost ...
MS PowerPoint - Catalysis Eprints database
... conduction band, whereas for a p-type semiconductor it lies just above the valence band. - In addition to doping, as with metal electrodes, the Fermi level of a semiconductor electrode varies with the applied potential; for example, moving to more negative potentials will raise the Fermi ...
... conduction band, whereas for a p-type semiconductor it lies just above the valence band. - In addition to doping, as with metal electrodes, the Fermi level of a semiconductor electrode varies with the applied potential; for example, moving to more negative potentials will raise the Fermi ...
Chemistry Review 3
... catalytic converter, nitrogen dioxide reacts with carbon monoxide to produce nitrogen and carbon dioxide. In addition, some carbon monoxide reacts with oxygen, producing carbon dioxide in the converter. These reactions are represented by the balanced equations below. Reaction 1: 2NO2(g) + 4CO(g) → N ...
... catalytic converter, nitrogen dioxide reacts with carbon monoxide to produce nitrogen and carbon dioxide. In addition, some carbon monoxide reacts with oxygen, producing carbon dioxide in the converter. These reactions are represented by the balanced equations below. Reaction 1: 2NO2(g) + 4CO(g) → N ...
CP Chemistry Midterm Study Guide
... 1. What types of properties are dependent upon the particles in a solution? 2. What is the % composition of oxygen in CO2? 3. Which part of the solution (solute or solvent) is water in an aqueous solution? 4. What is a precipitate? 5. Name and describe three types of mixtures. 6. Could you add more ...
... 1. What types of properties are dependent upon the particles in a solution? 2. What is the % composition of oxygen in CO2? 3. Which part of the solution (solute or solvent) is water in an aqueous solution? 4. What is a precipitate? 5. Name and describe three types of mixtures. 6. Could you add more ...
CHAPTER 4 | Solution Chemistry and the Hydrosphere
... Remember to compute total charge on each side of the arrow. The charge of 2 mol of H + is 2+ not 1+. 4.98. Collect and Organize To write the balanced half-reaction, we have to identify the reactants and products, balance the atoms, and then balance the charge for the equation. Analyze We are given t ...
... Remember to compute total charge on each side of the arrow. The charge of 2 mol of H + is 2+ not 1+. 4.98. Collect and Organize To write the balanced half-reaction, we have to identify the reactants and products, balance the atoms, and then balance the charge for the equation. Analyze We are given t ...
Full answers
... reaction coordinate Calculate the factor by which the reaction speeds up due to the presence of each of these two catalysts at a temperature of 37 C. Assume that the pre-exponential Arrhenius factor remains constant. Using the Arrhenius equation, k = A exp(-Ea / RT). Assuming that A is constant, the ...
... reaction coordinate Calculate the factor by which the reaction speeds up due to the presence of each of these two catalysts at a temperature of 37 C. Assume that the pre-exponential Arrhenius factor remains constant. Using the Arrhenius equation, k = A exp(-Ea / RT). Assuming that A is constant, the ...
Chapter 14
... 61) The rate constant for a second-order reaction is 0.13 M-1s-1. If the initial concentration of reactant is 0.26 mol/L, it takes __________ s for the concentration to decrease to 0.11 mol/L. A) 0.017 B) 0.68 C) 9.1 D) 40. E) 5.2 Chapter 15 Chemical Equilibrium 1) At equilibrium, __________. A) all ...
... 61) The rate constant for a second-order reaction is 0.13 M-1s-1. If the initial concentration of reactant is 0.26 mol/L, it takes __________ s for the concentration to decrease to 0.11 mol/L. A) 0.017 B) 0.68 C) 9.1 D) 40. E) 5.2 Chapter 15 Chemical Equilibrium 1) At equilibrium, __________. A) all ...
Old EXAM I - gozips.uakron.edu
... What is the concentration of a sulfuric acid solution if 5.78 g of solid sodium carbonate were required to completely react with 35.26 mL of the acid solution? The reaction produces carbon dioxide gas, water, and sodium sulfate. (More challenging question!) (a) (b) (c) (d) (e) ...
... What is the concentration of a sulfuric acid solution if 5.78 g of solid sodium carbonate were required to completely react with 35.26 mL of the acid solution? The reaction produces carbon dioxide gas, water, and sodium sulfate. (More challenging question!) (a) (b) (c) (d) (e) ...
Chem 1711 Review Exam 2
... Enthalpy, ΔH: equate enthalpy change for a process to energy change for that process if it occurs at constant P; ΔH = qP ΔH = Hfinal — Hinitial ΔH associated with physical changes: ΔHvap, ΔHfus, ΔHsub where vap = vaporization, (g l), fus = fusion (l s), sub = sublimation (s g). This is not in ...
... Enthalpy, ΔH: equate enthalpy change for a process to energy change for that process if it occurs at constant P; ΔH = qP ΔH = Hfinal — Hinitial ΔH associated with physical changes: ΔHvap, ΔHfus, ΔHsub where vap = vaporization, (g l), fus = fusion (l s), sub = sublimation (s g). This is not in ...
Double-Replacement Reactions - Fort Thomas Independent Schools
... • In double-replacement reactions, the ions of two compounds exchange places in an aqueous solution to form two new compounds. • One of the compounds formed is usually a precipitate, an insoluble gas that bubbles out of the solution, or a molecular compound, usually water. • The other compound is of ...
... • In double-replacement reactions, the ions of two compounds exchange places in an aqueous solution to form two new compounds. • One of the compounds formed is usually a precipitate, an insoluble gas that bubbles out of the solution, or a molecular compound, usually water. • The other compound is of ...
Chemical reactions alter arrangements of atoms.
... gas stove to increase the flow of gas increases the concentration of methane molecules that can combine with oxygen in the air. The result is a bigger flame and a faster combustion reaction. Surface Area Suppose one of the reactants in a chemical reaction is present as a single large piece of materi ...
... gas stove to increase the flow of gas increases the concentration of methane molecules that can combine with oxygen in the air. The result is a bigger flame and a faster combustion reaction. Surface Area Suppose one of the reactants in a chemical reaction is present as a single large piece of materi ...
Bioorthogonal chemistry
The term bioorthogonal chemistry refers to any chemical reaction that can occur inside of living systems without interfering with native biochemical processes. The term was coined by Carolyn R. Bertozzi in 2003. Since its introduction, the concept of the bioorthogonal reaction has enabled the study of biomolecules such as glycans, proteins, and lipids in real time in living systems without cellular toxicity. A number of chemical ligation strategies have been developed that fulfill the requirements of bioorthogonality, including the 1,3-dipolar cycloaddition between azides and cyclooctynes (also termed copper-free click chemistry), between nitrones and cyclooctynes, oxime/hydrazone formation from aldehydes and ketones, the tetrazine ligation, the isocyanide-based click reaction, and most recently, the quadricyclane ligation.The use of bioorthogonal chemistry typically proceeds in two steps. First, a cellular substrate is modified with a bioorthogonal functional group (chemical reporter) and introduced to the cell; substrates include metabolites, enzyme inhibitors, etc. The chemical reporter must not alter the structure of the substrate dramatically to avoid affecting its bioactivity. Secondly, a probe containing the complementary functional group is introduced to react and label the substrate.Although effective bioorthogonal reactions such as copper-free click chemistry have been developed, development of new reactions continues to generate orthogonal methods for labeling to allow multiple methods of labeling to be used in the same biosystems.