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word-doc Practice for the final exam!
... 1. Matter in which physical state has no specific shape but does have a specific volume? a. gas b. solid c. liquid d. salts e. ice 2. A combination of sand, salt, and water is an example of a __________. a. homogeneous mixture b. heterogeneous mixture c. compound d. pure substance e. solid 3. If mat ...
... 1. Matter in which physical state has no specific shape but does have a specific volume? a. gas b. solid c. liquid d. salts e. ice 2. A combination of sand, salt, and water is an example of a __________. a. homogeneous mixture b. heterogeneous mixture c. compound d. pure substance e. solid 3. If mat ...
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 ...
educator exam series
... 5. a)The set-up below was used by a form three student to prepare a dry sample of gas M. Study it and use it to answer the questions that follow:Conc. HCl ...
... 5. a)The set-up below was used by a form three student to prepare a dry sample of gas M. Study it and use it to answer the questions that follow:Conc. HCl ...
Matter
... Properties of Matter: Physical properties: -properties that can be observed without the substance changing into another substance(s) Chemical properties: -properties that matter exhibits as it is undergoing a change in chemical composition, or as it resists a change in chemical composition ...
... Properties of Matter: Physical properties: -properties that can be observed without the substance changing into another substance(s) Chemical properties: -properties that matter exhibits as it is undergoing a change in chemical composition, or as it resists a change in chemical composition ...
Chemical Equilbrium
... assumption, many times you will end up with a quadratic equation for an equilibrium constant expression. You can end up with a 3rd, 4th, 5th, etc. order polynomial, but I will not hold you responsible for being able to solve those as there is no simple formula for the solution. ...
... assumption, many times you will end up with a quadratic equation for an equilibrium constant expression. You can end up with a 3rd, 4th, 5th, etc. order polynomial, but I will not hold you responsible for being able to solve those as there is no simple formula for the solution. ...
File
... Carbon dioxide in water (soda water) gas-liquid Acetic acid in water (vinegar) liquid-liquid Sodium chloride in water (salt water) solid-liquid Copper in silver (sterling silver) solid-solid ...
... Carbon dioxide in water (soda water) gas-liquid Acetic acid in water (vinegar) liquid-liquid Sodium chloride in water (salt water) solid-liquid Copper in silver (sterling silver) solid-solid ...
CfE Higher Chemistry Homework 3.5
... To avoid these contaminants, hydrogen sulfide can be made by reacting aluminium sulfide with water. Hydrogen sulfide and aluminium hydroxide are produced. Write a balanced chemical equation for the production of hydrogen sulfide from aluminium sulfide and water. ...
... To avoid these contaminants, hydrogen sulfide can be made by reacting aluminium sulfide with water. Hydrogen sulfide and aluminium hydroxide are produced. Write a balanced chemical equation for the production of hydrogen sulfide from aluminium sulfide and water. ...
PPT
... The atmosphere does not collapse under the downward pull of gravity because of the energy embedded in the movement of the air molecules. This movement creates the force of pressure which counters the gravitational pull on the atmosphere. The balance between the force of pressure and gravity is the h ...
... The atmosphere does not collapse under the downward pull of gravity because of the energy embedded in the movement of the air molecules. This movement creates the force of pressure which counters the gravitational pull on the atmosphere. The balance between the force of pressure and gravity is the h ...
chemistry 11 exam review
... 8. What pressure is needed to change 130 mL of gas at 740 torr to 150 mL? (641 torr) 9. What temperature change is needed to change 1.0 L of gas at 10.0C and 800.0 torr to 0.50 L and 760 torr? (-138C change to bring your final temperature to 134K) 10. A 1.0 L rubber bladder is filled with carbon d ...
... 8. What pressure is needed to change 130 mL of gas at 740 torr to 150 mL? (641 torr) 9. What temperature change is needed to change 1.0 L of gas at 10.0C and 800.0 torr to 0.50 L and 760 torr? (-138C change to bring your final temperature to 134K) 10. A 1.0 L rubber bladder is filled with carbon d ...
Physical and Chemical Properties
... • There are different “states” of matter. No, not like Texas, Oklahoma, New Mexico. States of matter are also known as phases (a physical state of matter). Elements and compounds can move from one phase to another phase when special physical forces are present. • Solid • Liquid • Gas ...
... • There are different “states” of matter. No, not like Texas, Oklahoma, New Mexico. States of matter are also known as phases (a physical state of matter). Elements and compounds can move from one phase to another phase when special physical forces are present. • Solid • Liquid • Gas ...
Take Home - mvhs
... suspected of being this illicit drug; when tested, the sample was shown to have a percentage composition of 83.71% C, 10.42% H, and 5.61% N. Prove if this sample is phencyclidine. (2 pts work, 1 pt correct answer, 1 pt correct sig figs) ...
... suspected of being this illicit drug; when tested, the sample was shown to have a percentage composition of 83.71% C, 10.42% H, and 5.61% N. Prove if this sample is phencyclidine. (2 pts work, 1 pt correct answer, 1 pt correct sig figs) ...
A Study of Matter
... • Boiling point- liquid turns to a gas (water to water vapor) • Condensation- where a gas turns to a liquid (the sweating on a glass that is colder than it’s environment) • Sublimation point- temperature at which a solid changes directly to a gas without first changing into a liquid. (dry ice) ...
... • Boiling point- liquid turns to a gas (water to water vapor) • Condensation- where a gas turns to a liquid (the sweating on a glass that is colder than it’s environment) • Sublimation point- temperature at which a solid changes directly to a gas without first changing into a liquid. (dry ice) ...
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 ...
Question 2
... b) How many moles of CO2 are produced when 0.49 g of NaHCO3 combines with excess HCl? c) Calculate the mass of NaCl that results when 1.48 moles of HCl combines with excess NaHCO 3. d) What mass of NaHCO3 is required to produce 6.1 x 103 moles of H2O? ...
... b) How many moles of CO2 are produced when 0.49 g of NaHCO3 combines with excess HCl? c) Calculate the mass of NaCl that results when 1.48 moles of HCl combines with excess NaHCO 3. d) What mass of NaHCO3 is required to produce 6.1 x 103 moles of H2O? ...
Unit 2: Mixture and Matter Study Guide Ch 2 Vocab to know: Matter
... Solid Liquid Gas Mixture Solvent Alloy ...
... Solid Liquid Gas Mixture Solvent Alloy ...
9/21 properties of matter ppt
... several methods for separating mixtures. As you read about each technique, see how many uses you can identify for it. These are the methods in which you will need to be familiar to do the activities later in this course ...
... several methods for separating mixtures. As you read about each technique, see how many uses you can identify for it. These are the methods in which you will need to be familiar to do the activities later in this course ...
SAT Practice Test 3
... The element with an electron configuration of [He]2s 1 has a greater nuclear charge than fluorine 1 mole of NaCl yields 3 moles of ions in solution Neutrons and protons are both located in the principal energy levels of the atom HCl is a proton donor Powdered zinc has a greater surface area NH3 is a ...
... The element with an electron configuration of [He]2s 1 has a greater nuclear charge than fluorine 1 mole of NaCl yields 3 moles of ions in solution Neutrons and protons are both located in the principal energy levels of the atom HCl is a proton donor Powdered zinc has a greater surface area NH3 is a ...
Intro to Chem
... A chemical reaction (rxn) has two parts the reactants and the products. Reactant – substance present at the start of the rxn Product – substance produced in the rxn. H2 + O2 → 2H2O ...
... A chemical reaction (rxn) has two parts the reactants and the products. Reactant – substance present at the start of the rxn Product – substance produced in the rxn. H2 + O2 → 2H2O ...
International Journal of
... heterocycle, it has reactive sites which allow for functionalization. The main objective of the synthetic chemistry and medicinal chemistry is to synthesize the compounds that give more yield with purity and show promising activity as therapeutic agents with lower to ...
... heterocycle, it has reactive sites which allow for functionalization. The main objective of the synthetic chemistry and medicinal chemistry is to synthesize the compounds that give more yield with purity and show promising activity as therapeutic agents with lower to ...
GAS PRACTICE A sample of an ideal gas is cooled from 50.0 °C to
... 8. The best explanation for the fact that diamond is extremely hard is that diamond crystals… (A) are made up of atoms that are intrinsically hard because of their electronic structures (B) consist of positive and negative ions that are strongly attracted to each other (C) are giant molecules in whi ...
... 8. The best explanation for the fact that diamond is extremely hard is that diamond crystals… (A) are made up of atoms that are intrinsically hard because of their electronic structures (B) consist of positive and negative ions that are strongly attracted to each other (C) are giant molecules in whi ...
Chapter 1 Matter and Change
... - contain only one kind of atom - cannot be broken down by physical or chemical means - unique physical and chemical properties ...
... - contain only one kind of atom - cannot be broken down by physical or chemical means - unique physical and chemical properties ...
Matter – Properties and Changes 1 Intensive properties
... composition and properties from the original o Crushing grapes physical change Fermenting grape juice and sugars into wine chemical change ...
... composition and properties from the original o Crushing grapes physical change Fermenting grape juice and sugars into wine chemical change ...
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 ...
Chapter 5 of Zumdahl
... Real molecules do take up space and they do interact with each other (especially polar molecules). Need to add correction factors to the ideal gas law to account for these. ...
... Real molecules do take up space and they do interact with each other (especially polar molecules). Need to add correction factors to the ideal gas law to account for these. ...
Gas chromatography
![](https://commons.wikimedia.org/wiki/Special:FilePath/Gaschromatograph.jpg?width=300)
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.