Chemistry 2008 Multiple Choice
... 32. Gaseous cyclobutene undergoes a first-order reaction to form gaseous butadiene. At a particular temperature, the partial pressure of cyclobutene in the reaction vessel drops to one-eighth its original value in 120 seconds. What is the half-life for this reaction at this temperature? (A) 15 s (B) ...
... 32. Gaseous cyclobutene undergoes a first-order reaction to form gaseous butadiene. At a particular temperature, the partial pressure of cyclobutene in the reaction vessel drops to one-eighth its original value in 120 seconds. What is the half-life for this reaction at this temperature? (A) 15 s (B) ...
Chapter 5 Gases
... fraction of 0.050. What must the total pressure be for the partial pressure of oxygen to be 0.21 atm? ...
... fraction of 0.050. What must the total pressure be for the partial pressure of oxygen to be 0.21 atm? ...
Gas review
... 1. A gas is composed of molecules that are separated from each other by distances far greater than their own dimensions. The molecules can be considered to be points; that is, they possess mass but have negligible volume. 2. Gas molecules are in constant motion in random directions. Collisions among ...
... 1. A gas is composed of molecules that are separated from each other by distances far greater than their own dimensions. The molecules can be considered to be points; that is, they possess mass but have negligible volume. 2. Gas molecules are in constant motion in random directions. Collisions among ...
Document
... is lower than that of the energy of the products. heat is absorbed and used to convert the reactants to products and written with a (+) sign. ...
... is lower than that of the energy of the products. heat is absorbed and used to convert the reactants to products and written with a (+) sign. ...
Semester 2 Review
... 49. List the factors that affect the RATE of a chemical reaction. Tell HOW they affect the rate. ...
... 49. List the factors that affect the RATE of a chemical reaction. Tell HOW they affect the rate. ...
South Pasadena • AP Chemistry
... 8. If some of the gas bubbles from the reaction had escaped out the bottom of the tube, how would this have affected your molar volume at STP? Explain. ...
... 8. If some of the gas bubbles from the reaction had escaped out the bottom of the tube, how would this have affected your molar volume at STP? Explain. ...
CHEMISTRY 102B Name Hour Exam II March 19, 2015 Signature
... orbital and nitrogen has all unpaired electrons. c) It is consistent with the general trend relating changes in ionization energy across a period from left to right because it is harder to take an electron from an oxygen atom than from a nitrogen atom. d) It is inconsistent with the general trend re ...
... orbital and nitrogen has all unpaired electrons. c) It is consistent with the general trend relating changes in ionization energy across a period from left to right because it is harder to take an electron from an oxygen atom than from a nitrogen atom. d) It is inconsistent with the general trend re ...
Thermodynamics
... We can determine G for any phase by measuring H and S for the reaction creating the phase from the elements We can then determine G at any T and P mathematically Most accurate if know how V and S vary with P and T • dV/dP is the coefficient of isothermal compressibility • dS/dT is the heat capacit ...
... We can determine G for any phase by measuring H and S for the reaction creating the phase from the elements We can then determine G at any T and P mathematically Most accurate if know how V and S vary with P and T • dV/dP is the coefficient of isothermal compressibility • dS/dT is the heat capacit ...
L1 – CHEMISTRY FINAL REVIEW
... 32. Describe the Van Der Waals forces between water molecules called dipole interactions or Hydrogen bonds. H-bond is a strong intermolecular bond between the slightly positive Hydrogen end of one water molecule and the slightly neg. oxygen end of an adjacent water molecule. 33. Name 4 unique proper ...
... 32. Describe the Van Der Waals forces between water molecules called dipole interactions or Hydrogen bonds. H-bond is a strong intermolecular bond between the slightly positive Hydrogen end of one water molecule and the slightly neg. oxygen end of an adjacent water molecule. 33. Name 4 unique proper ...
Chem A Week 2 Matter Notes
... chromatography. It is the physical separation of a mixture into its individual components. It involves using a solvent to pass through the mixture. What solvent should I use? The solvent used depends upon the solubility of the mixture you are trying to separate. Examples are water, isopropyl alcohol ...
... chromatography. It is the physical separation of a mixture into its individual components. It involves using a solvent to pass through the mixture. What solvent should I use? The solvent used depends upon the solubility of the mixture you are trying to separate. Examples are water, isopropyl alcohol ...
IONIZATION METHODS IN MASS SPECTROMETRY
... to an intense laser light rather than to a beam of energetic atoms or ions. c) The laser light is applied in pulses of short duration in contrast to exposure to a continuous beam of energetic atoms or ions. d) The analyte is ionized by energy transfer from the matrix rather than being "sputtered or ...
... to an intense laser light rather than to a beam of energetic atoms or ions. c) The laser light is applied in pulses of short duration in contrast to exposure to a continuous beam of energetic atoms or ions. d) The analyte is ionized by energy transfer from the matrix rather than being "sputtered or ...
Unit 2
... chapters 1,2,3 and chapter 10. Also, at the end of the assignment are two important sheets. The first is a sheet of common ions for reference, you are expected to know these ions for the AP test and thus for this course. After this page is a sheet of elements; you are expected to know the symbols an ...
... chapters 1,2,3 and chapter 10. Also, at the end of the assignment are two important sheets. The first is a sheet of common ions for reference, you are expected to know these ions for the AP test and thus for this course. After this page is a sheet of elements; you are expected to know the symbols an ...
Unit 2
... a) Solid zinc metal reacts with sulfuric acid to produce hydrogen gas and a solution of zinc sulfate. ...
... a) Solid zinc metal reacts with sulfuric acid to produce hydrogen gas and a solution of zinc sulfate. ...
Propane - Power Fuels LLC
... Petroleum Gas may cause frostbite or cold burns. Propane acts as a simple asphyxiant as oxygen content in air is displaced by the propane. At increasing concentration levels, propane may cause dizziness, headaches, loss of coordination, fatigue, unconsciousness and death. ...
... Petroleum Gas may cause frostbite or cold burns. Propane acts as a simple asphyxiant as oxygen content in air is displaced by the propane. At increasing concentration levels, propane may cause dizziness, headaches, loss of coordination, fatigue, unconsciousness and death. ...
PPT File - Clark Magnet High School
... At high pressures and low temperatures real gases deviate more and more from ideal behavior as the intermolecular forces start to influence the behavior of the real gas under these conditions. Ammonia has hydrogen atoms bonded to a small and highly electronegative atom (nitrogen) which also has a lo ...
... At high pressures and low temperatures real gases deviate more and more from ideal behavior as the intermolecular forces start to influence the behavior of the real gas under these conditions. Ammonia has hydrogen atoms bonded to a small and highly electronegative atom (nitrogen) which also has a lo ...
Oxidation-Reduction Reactions
... In a titration, a solution of accurately known concentration is added gradually to another solution of unknown concentration until the chemical reaction between the two solutions is ...
... In a titration, a solution of accurately known concentration is added gradually to another solution of unknown concentration until the chemical reaction between the two solutions is ...
Per 3 - Old Saybrook Public Schools
... may have been added and removed from each chapter, so use your notes as your primary source of reference. ü I am available Tuesday after school until 3:15. I am here every morning by 7:05 and stay until 3:15. So, if you have questions or the times above do not work for you, just ask and we can ...
... may have been added and removed from each chapter, so use your notes as your primary source of reference. ü I am available Tuesday after school until 3:15. I am here every morning by 7:05 and stay until 3:15. So, if you have questions or the times above do not work for you, just ask and we can ...
Per 5 - Old Saybrook Public Schools
... may have been added and removed from each chapter, so use your notes as your primary source of reference. ü I am available Tuesday after school until 3:15. I am here every morning by 7:05 and stay until 3:15. So, if you have questions or the times above do not work for you, just ask and we can ...
... may have been added and removed from each chapter, so use your notes as your primary source of reference. ü I am available Tuesday after school until 3:15. I am here every morning by 7:05 and stay until 3:15. So, if you have questions or the times above do not work for you, just ask and we can ...
Chemistry Final Exam Review 2006-2007
... activation energy, activated complex, and the heat of reaction. 7. What is the sign of an endothermic reaction and exothermic reaction? 8. Using the specific heat values for water and iron, which one would have the largest temperature change if they have the same mass? 9. Know how to calculate the h ...
... activation energy, activated complex, and the heat of reaction. 7. What is the sign of an endothermic reaction and exothermic reaction? 8. Using the specific heat values for water and iron, which one would have the largest temperature change if they have the same mass? 9. Know how to calculate the h ...
Name_____________________________________ Chemistry
... 102. Increasing the pressure of a gas causes the temperature to (increase / decrease/ remain constant). ...
... 102. Increasing the pressure of a gas causes the temperature to (increase / decrease/ remain constant). ...
Worksheet #2
... Solid calcium carbide, CaC2, reacts with water to produce acetylene gas, C2H2, and aqueous calcium hydroxide. CaC2(s) + 2H2O(l) ...
... Solid calcium carbide, CaC2, reacts with water to produce acetylene gas, C2H2, and aqueous calcium hydroxide. CaC2(s) + 2H2O(l) ...
File
... C) 8 protons and 5 neutrons D) 7 protons and 7 neutrons E) 6 protons and 8 neutrons 40. Which of the following statements about atoms is incorrect? A) Atoms are neutral because they contain the same number of protons and electrons B) All atoms of a given element must contain the same number protons, ...
... C) 8 protons and 5 neutrons D) 7 protons and 7 neutrons E) 6 protons and 8 neutrons 40. Which of the following statements about atoms is incorrect? A) Atoms are neutral because they contain the same number of protons and electrons B) All atoms of a given element must contain the same number protons, ...
PRE AP CHEMISTRY REVIEW PROBLEMS NON COLLEGE
... g. What volume of a 3.00 M solution of HCl is required to prepare 200.0 mL of a 0.120 M solution? h. What is the concentration of the solution when 300 mL of a 1.80 M NaI solution is diluted to 4.00 L? i. What is the final volume of a 0.600 M KNO3 solution prepared with 50.0 mL of a 1.50 M solution? ...
... g. What volume of a 3.00 M solution of HCl is required to prepare 200.0 mL of a 0.120 M solution? h. What is the concentration of the solution when 300 mL of a 1.80 M NaI solution is diluted to 4.00 L? i. What is the final volume of a 0.600 M KNO3 solution prepared with 50.0 mL of a 1.50 M solution? ...
File - Mr. L`s Room
... 10. Show the molecules of solids, liquids, and gases. Use arrows to show their relative energy level. ...
... 10. Show the molecules of solids, liquids, and gases. Use arrows to show their relative energy level. ...
Paper
... to separate the components in a mixture of indicators using paper chromatography, thin-layer chromatography or column chromatography. ...
... to separate the components in a mixture of indicators using paper chromatography, thin-layer chromatography or column chromatography. ...
Gas chromatography
Gas chromatography (GC) is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture (the relative amounts of such components can also be determined). In some situations, GC may help in identifying a compound. In preparative chromatography, GC can be used to prepare pure compounds from a mixture.In gas chromatography, the mobile phase (or ""moving phase"") is a carrier gas, usually an inert gas such as helium or an unreactive gas such as nitrogen. The stationary phase is a microscopic layer of liquid or polymer on an inert solid support, inside a piece of glass or metal tubing called a column (a homage to the fractionating column used in distillation). The instrument used to perform gas chromatography is called a gas chromatograph (or ""aerograph"", ""gas separator"").The gaseous compounds being analyzed interact with the walls of the column, which is coated with a stationary phase. This causes each compound to elute at a different time, known as the retention time of the compound. The comparison of retention times is what gives GC its analytical usefulness.Gas chromatography is in principle similar to column chromatography (as well as other forms of chromatography, such as HPLC, TLC), but has several notable differences. First, the process of separating the compounds in a mixture is carried out between a liquid stationary phase and a gas mobile phase, whereas in column chromatography the stationary phase is a solid and the mobile phase is a liquid. (Hence the full name of the procedure is ""Gas–liquid chromatography"", referring to the mobile and stationary phases, respectively.) Second, the column through which the gas phase passes is located in an oven where the temperature of the gas can be controlled, whereas column chromatography (typically) has no such temperature control. Finally, the concentration of a compound in the gas phase is solely a function of the vapor pressure of the gas.Gas chromatography is also similar to fractional distillation, since both processes separate the components of a mixture primarily based on boiling point (or vapor pressure) differences. However, fractional distillation is typically used to separate components of a mixture on a large scale, whereas GC can be used on a much smaller scale (i.e. microscale).Gas chromatography is also sometimes known as vapor-phase chromatography (VPC), or gas–liquid partition chromatography (GLPC). These alternative names, as well as their respective abbreviations, are frequently used in scientific literature. Strictly speaking, GLPC is the most correct terminology, and is thus preferred by many authors.