Quiz 1 - sample quiz
... 9. Which one of the following statements is false? a) An electron jumps from a high energy orbital to a lower energy orbital when a photon of energy is emitted by an atom. b) The energy of light is directly proportional to its wavelength. c) The atomic emission spectrum consists of a series of discr ...
... 9. Which one of the following statements is false? a) An electron jumps from a high energy orbital to a lower energy orbital when a photon of energy is emitted by an atom. b) The energy of light is directly proportional to its wavelength. c) The atomic emission spectrum consists of a series of discr ...
Elemental Analysis of Semiconductor Gases Using a Gas Exchange
... Linear calibrations for Ge (as GeO2) and As (as As2O3) are shown in Figures 3 and 4 respectively. Calibration points for As at 1, 2, 5, 100, 200 and 500 vol.ppt and 5, 10, 25, 500, 1000 and 2500 vol.ppt for Ge are shown. Each point is made from 3 separate measurements. The zoomed section of each cal ...
... Linear calibrations for Ge (as GeO2) and As (as As2O3) are shown in Figures 3 and 4 respectively. Calibration points for As at 1, 2, 5, 100, 200 and 500 vol.ppt and 5, 10, 25, 500, 1000 and 2500 vol.ppt for Ge are shown. Each point is made from 3 separate measurements. The zoomed section of each cal ...
Study Guide (Semester 2)
... To be able to write a skeleton chemical equation from words. Directions: Write a complete balanced equation for each chemical reaction. Box your answer. 1. Tin foil will oxidize when exposed to oxygen forming tin (II) oxide. ...
... To be able to write a skeleton chemical equation from words. Directions: Write a complete balanced equation for each chemical reaction. Box your answer. 1. Tin foil will oxidize when exposed to oxygen forming tin (II) oxide. ...
TANNIC ACID
... Take 1 g of tannic acid of solvent free or known residual solvent contents in a sample vial, add 5 µl of the standard solution and seal it quickly with a septum. Set the sample vial in a pre-conditioned gas chromatograph and start the analysis under the following conditions and obtain calibration cu ...
... Take 1 g of tannic acid of solvent free or known residual solvent contents in a sample vial, add 5 µl of the standard solution and seal it quickly with a septum. Set the sample vial in a pre-conditioned gas chromatograph and start the analysis under the following conditions and obtain calibration cu ...
AP Chemistry Unit 3 Test Review Topics Covered: Gases Liquids
... 12) On a mountaintop, it is observed that water boils at 90°C, not at 100°C as at sea level. This phenomenon occurs because on the mountaintop the A) equilibrium water vapor pressure is higher due to the higher atmospheric pressure B) equilibrium water vapor pressure is lower due to the higher atmo ...
... 12) On a mountaintop, it is observed that water boils at 90°C, not at 100°C as at sea level. This phenomenon occurs because on the mountaintop the A) equilibrium water vapor pressure is higher due to the higher atmospheric pressure B) equilibrium water vapor pressure is lower due to the higher atmo ...
CHEM 1211K Test IV MULTIPLE CHOICE. (3 points each) 1) The
... 14) If 50.75 g of a gas occupies 10.0 L at STP, 129.3 g of the gas will occupy __________ L at STP. A) 3.92 B) 25.5 C) 12.9 D) 5.08 E) 50.8 15) Which statement about ideal behavior of gases is false? A) Volume of 2.00 moles of oxygen gas, O 2, is assumed to be the same as that of 2.00 moles of carbo ...
... 14) If 50.75 g of a gas occupies 10.0 L at STP, 129.3 g of the gas will occupy __________ L at STP. A) 3.92 B) 25.5 C) 12.9 D) 5.08 E) 50.8 15) Which statement about ideal behavior of gases is false? A) Volume of 2.00 moles of oxygen gas, O 2, is assumed to be the same as that of 2.00 moles of carbo ...
Page 1 of 4 FOSS California Mixtures and Solutions
... Element: A fundamental substance that cannot be broken down by simple chemical and physical processes. Evaporation: The change of state from a liquid to a gas. Gas: Matter that is shapeless and expands to fill any closed container it is placed in. Gaseous: Existing in the state of a gas (not a solid ...
... Element: A fundamental substance that cannot be broken down by simple chemical and physical processes. Evaporation: The change of state from a liquid to a gas. Gas: Matter that is shapeless and expands to fill any closed container it is placed in. Gaseous: Existing in the state of a gas (not a solid ...
Chemistry- CST Review
... 6. How does changing the amount of gas, volume of gas, and temperature affect the gas pressure? For Q’s #9-14, name the gas law and show all your work. 7. The pressure on 2.00 L of anesthetic gas changes from 100 kPa to 40 kPa. What will be the new volume if the temperature remains constant? 8. If a ...
... 6. How does changing the amount of gas, volume of gas, and temperature affect the gas pressure? For Q’s #9-14, name the gas law and show all your work. 7. The pressure on 2.00 L of anesthetic gas changes from 100 kPa to 40 kPa. What will be the new volume if the temperature remains constant? 8. If a ...
HonorsChem.final.rev.probs
... a) Determine the number of grams of KOH that will be produced when 97 g of potassium are used. b) Determine the number of liters of H2 gas that will be produced when 6.5 X 1024 molecules of water ...
... a) Determine the number of grams of KOH that will be produced when 97 g of potassium are used. b) Determine the number of liters of H2 gas that will be produced when 6.5 X 1024 molecules of water ...
Final Review Sheet Answers (the 6 page packet)
... however, the CO2 molecule does have a dipole moment between the C and O atoms. The dipole cancels in the molecule overall making it nonpolar, but in reality, the oxygens are still slightly more negative than the carbon and can interact with other CO2 molecules. For all of these reasons, the balloon ...
... however, the CO2 molecule does have a dipole moment between the C and O atoms. The dipole cancels in the molecule overall making it nonpolar, but in reality, the oxygens are still slightly more negative than the carbon and can interact with other CO2 molecules. For all of these reasons, the balloon ...
PREP Chemistry 2008 Final Exam Review Problems
... 17. How many liters of a 0.340 M HCl solution are required if you need 0.25 moles of HCl? 18. Write a balanced chemical equation for each of the following reactions that involve acids and bases. Identify the types of reactions for each (list all that apply: combustion, SR, DR, synthesis, decompositi ...
... 17. How many liters of a 0.340 M HCl solution are required if you need 0.25 moles of HCl? 18. Write a balanced chemical equation for each of the following reactions that involve acids and bases. Identify the types of reactions for each (list all that apply: combustion, SR, DR, synthesis, decompositi ...
BAT
... Important topics: Particle behavior in liquids and solids, phase changes, molar heat of fusion, molar heat of vaporization, phase diagrams, equilibrium vapor pressure ...
... Important topics: Particle behavior in liquids and solids, phase changes, molar heat of fusion, molar heat of vaporization, phase diagrams, equilibrium vapor pressure ...
Semester II Exam Review Questions
... 13. What is the boiling point temperature for Yummygum when the external pressure is 75 atmospheres? 14. What is the freezing point temperature for Yummygum when the external pressure is 70 atmospheres? 15. If you were to have a container of Yummygum in your kitchen, in what state (phase of matter) ...
... 13. What is the boiling point temperature for Yummygum when the external pressure is 75 atmospheres? 14. What is the freezing point temperature for Yummygum when the external pressure is 70 atmospheres? 15. If you were to have a container of Yummygum in your kitchen, in what state (phase of matter) ...
a Gas
... The temperatuer of water is 23°C ve atmosferic pressure is 751mmHg. What is the volume of O2 collected over water. Vapor pressure of water at 23°C is 21,1mmHg ...
... The temperatuer of water is 23°C ve atmosferic pressure is 751mmHg. What is the volume of O2 collected over water. Vapor pressure of water at 23°C is 21,1mmHg ...
MATTER QUIZ: What to Study From: PHASE CHANGES
... List one indicator of a chemical change: _________________________________________ What is the main difference between a physical and chemical change? What is an alloy? _________________________________________________________________ What is a precipitate? _________________________________________ ...
... List one indicator of a chemical change: _________________________________________ What is the main difference between a physical and chemical change? What is an alloy? _________________________________________________________________ What is a precipitate? _________________________________________ ...
practice quiz5
... E) None of the above Question 9 A mixture of neon, argon, and xenon had a total pressure of 1560 mm Hg at 298 K. The mixture was found to contain 1.50 mol Ne, 2.65 mol Ar, and 1.75 mol Xe. What is the partial pressure of Xe? A) 701 mm Hg B) 658 mm Hg C) 396 mm Hg D) 463 mm Hg E) None of the above Qu ...
... E) None of the above Question 9 A mixture of neon, argon, and xenon had a total pressure of 1560 mm Hg at 298 K. The mixture was found to contain 1.50 mol Ne, 2.65 mol Ar, and 1.75 mol Xe. What is the partial pressure of Xe? A) 701 mm Hg B) 658 mm Hg C) 396 mm Hg D) 463 mm Hg E) None of the above Qu ...
practice test2(Answers)
... C) The temperature of liquid water increases linearly as it is heated D) The temperature of liquid water remains at 100°C as it boils E) Both liquid water and ice are present at 0°C. ...
... C) The temperature of liquid water increases linearly as it is heated D) The temperature of liquid water remains at 100°C as it boils E) Both liquid water and ice are present at 0°C. ...
Gas Laws Practice Test.Ans.Key
... We assume the volume of the gas to be equal to the volume of the container, but at high pressure, the available free space for molecular movement is decreased, increasing the number of collisions. This results in an increase in the observed pressure. ...
... We assume the volume of the gas to be equal to the volume of the container, but at high pressure, the available free space for molecular movement is decreased, increasing the number of collisions. This results in an increase in the observed pressure. ...
QUATERLY 3 REVIEW CHAPTER 12- Stoichiometry Define the law
... 3. Define Limiting and excess reagent 4. Determine the limiting and excess reagents from given data 5. Define Percent Yield and calculate it from given data 6. a. What mass of iron must react with excess oxygen in order to form 4.81 moles of iron (III) oxide? b. What mass of iron is needed to react ...
... 3. Define Limiting and excess reagent 4. Determine the limiting and excess reagents from given data 5. Define Percent Yield and calculate it from given data 6. a. What mass of iron must react with excess oxygen in order to form 4.81 moles of iron (III) oxide? b. What mass of iron is needed to react ...
Name________________________ Midterm Review Date
... A) Different elements must have different numbers of isotopes. B) All atoms of a given element must have the same mass number. C) All atoms of a given element must have the same atomic number. D) Different elements must have different numbers of neutrons. 33. What occurs when an atom of chlorine and ...
... A) Different elements must have different numbers of isotopes. B) All atoms of a given element must have the same mass number. C) All atoms of a given element must have the same atomic number. D) Different elements must have different numbers of neutrons. 33. What occurs when an atom of chlorine and ...
Answers - Shelton State
... Melting point and freezing point are the same temperature. What is vapor pressure? The pressure of vapor in equilibrium with its liquid state. The pressure of a vapor evaporating from the liquid state. What is boiling? The especially rapid evaporation that occurs when the vapor pressure of a liquid ...
... Melting point and freezing point are the same temperature. What is vapor pressure? The pressure of vapor in equilibrium with its liquid state. The pressure of a vapor evaporating from the liquid state. What is boiling? The especially rapid evaporation that occurs when the vapor pressure of a liquid ...
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.