semester 1 examination 2009 the university of the
... the atmospheric pressure increases. the atmospheric pressure decreases. the atmospheric pressure increases, then decreases. the atmospheric pressure remains constant. ...
... the atmospheric pressure increases. the atmospheric pressure decreases. the atmospheric pressure increases, then decreases. the atmospheric pressure remains constant. ...
Lesson 11.1 properties of solutions
... be explained in terms of two factors. One is the natural tendency of substances to mix. However, if the process of dissolving one substance in another involved nothing more than mixing, you would expect all substances to be completely soluble in one another. You know this is not always the case, so ...
... be explained in terms of two factors. One is the natural tendency of substances to mix. However, if the process of dissolving one substance in another involved nothing more than mixing, you would expect all substances to be completely soluble in one another. You know this is not always the case, so ...
Surface Tension
... Surface tension is defined as the force at right angle to any line of unit length in the surface. Therefore, surface tension = force/distance. It is expressed in N/m. Therefore, it is apparent that the units of surface energy and surface tension are identical. Surface energy can be determined by ...
... Surface tension is defined as the force at right angle to any line of unit length in the surface. Therefore, surface tension = force/distance. It is expressed in N/m. Therefore, it is apparent that the units of surface energy and surface tension are identical. Surface energy can be determined by ...
Ch 8 LAN 7th Intro Chem Gases Liquids and Solids
... Be able to use the ideal gas law to find the pressure, volume, temperature, or molar amount of a gas sample. 5. What is partial pressure? Be able to define partial pressure and use Dalton’s law of partial pressures. 6. What are the various kinds of solids, and how do they differ? Be able to recogniz ...
... Be able to use the ideal gas law to find the pressure, volume, temperature, or molar amount of a gas sample. 5. What is partial pressure? Be able to define partial pressure and use Dalton’s law of partial pressures. 6. What are the various kinds of solids, and how do they differ? Be able to recogniz ...
Improvement of the Sorption Performance of Nanosilica
... can be used as chelating agent due to their unique properties (8). ILs are salts consisting completely of organic cations and inorganic or organic anions. Their better charge distribution and larger ion size compared to classical inorganic salts result in melting points below 100 °C. By variation of ...
... can be used as chelating agent due to their unique properties (8). ILs are salts consisting completely of organic cations and inorganic or organic anions. Their better charge distribution and larger ion size compared to classical inorganic salts result in melting points below 100 °C. By variation of ...
Description of liquid–gas phase transition in the frame of continuum
... measured by a thermometer, and entropy S is introduced as a quantity conjugate with the temperature. Since we suppose that the internal energy is an additive function of the number of particles it can be assumed that the entropy is also an additive function of the number of particles. Note that this ...
... measured by a thermometer, and entropy S is introduced as a quantity conjugate with the temperature. Since we suppose that the internal energy is an additive function of the number of particles it can be assumed that the entropy is also an additive function of the number of particles. Note that this ...
Topic 1222 Equation of State: Real Gases: van der Waals and Other
... Boyle’s Law requires that the product p ⋅ Vj at fixed temperature is independent of pressure. In the case of hydrogen, the product p ⋅ Vj at 273 K increases with increase in pressure. However for many gases (e.g. nitrogen and carbon dioxide) the product p ⋅ V j at fixed T decreases with increase in ...
... Boyle’s Law requires that the product p ⋅ Vj at fixed temperature is independent of pressure. In the case of hydrogen, the product p ⋅ Vj at 273 K increases with increase in pressure. However for many gases (e.g. nitrogen and carbon dioxide) the product p ⋅ V j at fixed T decreases with increase in ...
V α - Springer
... An important definition: the thermodynamic system The objects described by thermodynamics are called thermodynamic systems. These are not simply “the part of the physical universe that is under consideration” (or in which we have special interest), rather material bodies having a special property; t ...
... An important definition: the thermodynamic system The objects described by thermodynamics are called thermodynamic systems. These are not simply “the part of the physical universe that is under consideration” (or in which we have special interest), rather material bodies having a special property; t ...
FLUID-SOLID SEPARATION_Adsorption
... Physical properties of adsorbent -In the form of small pellets, beads, or granules ranging 0.1 mm to 12 mm in size. -Adsorbent particle has a very porous structure, with many fine pores and pore volumes up to 50% of total particle volume. -Adsorption occurs as a monolayer although several layers so ...
... Physical properties of adsorbent -In the form of small pellets, beads, or granules ranging 0.1 mm to 12 mm in size. -Adsorbent particle has a very porous structure, with many fine pores and pore volumes up to 50% of total particle volume. -Adsorption occurs as a monolayer although several layers so ...
Uncertainty in Measuring Length
... In chemistry, you will be using measured numbers in lab, in exercises, and on tests and quizzes. The number of digits, i.e. significant figures, reported for a numerical quantity conveys the quality of the measurement or analysis to the reader. When recording data or calculating numerical values, th ...
... In chemistry, you will be using measured numbers in lab, in exercises, and on tests and quizzes. The number of digits, i.e. significant figures, reported for a numerical quantity conveys the quality of the measurement or analysis to the reader. When recording data or calculating numerical values, th ...
Derivation of the BET and Langmuir Isotherms
... pressure for pure nitrogen, Po , at the temperature the experiment is being done. Therefore x is just P/Po , the pressure over the equilibrium vapor pressure of liquid nitrogen at the experimental temperature. The constant c was defined as (Pk1 )/(xk−1 ) where k1 is the rate of adsorption onto the b ...
... pressure for pure nitrogen, Po , at the temperature the experiment is being done. Therefore x is just P/Po , the pressure over the equilibrium vapor pressure of liquid nitrogen at the experimental temperature. The constant c was defined as (Pk1 )/(xk−1 ) where k1 is the rate of adsorption onto the b ...
Response and Driving Mechanism of an EAP Actuator based on an
... Polymer gels swollen by ionic liquids, named “iongels”, are expected to be applied in several solid electrochemical devices. As one of the applications, we have studied electroactive polymer (EAP) actuators that can change their shapes with the application of electronic stimulus. EAPs have attracted ...
... Polymer gels swollen by ionic liquids, named “iongels”, are expected to be applied in several solid electrochemical devices. As one of the applications, we have studied electroactive polymer (EAP) actuators that can change their shapes with the application of electronic stimulus. EAPs have attracted ...
Phase Diagram of Water under an Applied Electric Field
... water values close to unity are obtained for SM at high E as the molecules are free to orient their dipoles with the field direction. For ice Ih, however, SM reaches a limit of 0:58 at high E because the geometric constraints of the solid structure of ice Ih prevent complete saturation. For small ...
... water values close to unity are obtained for SM at high E as the molecules are free to orient their dipoles with the field direction. For ice Ih, however, SM reaches a limit of 0:58 at high E because the geometric constraints of the solid structure of ice Ih prevent complete saturation. For small ...
Neutral ionic liquid [BMIm]BF4 promoted highly selective
... as a neutral polar solvent. To our surprising, 93% conversion and 99% selectivity to tert-butyl acetate were obtained under the identical conditions (Table 1, Entry 4). This unusual observation promoted us to further investigate the effects of other ionic liquids on the esterification reaction. The ...
... as a neutral polar solvent. To our surprising, 93% conversion and 99% selectivity to tert-butyl acetate were obtained under the identical conditions (Table 1, Entry 4). This unusual observation promoted us to further investigate the effects of other ionic liquids on the esterification reaction. The ...
Measurement
... Solid – definite volume and shape; particles packed in fixed positions. Liquid – definite volume but indefinite shape; particles close together but not in fixed positions Gas – neither definite volume nor definite shape; particles are at great distances from one another Plasma – high temperature, io ...
... Solid – definite volume and shape; particles packed in fixed positions. Liquid – definite volume but indefinite shape; particles close together but not in fixed positions Gas – neither definite volume nor definite shape; particles are at great distances from one another Plasma – high temperature, io ...
Answer ALL questions in section A and Any Three questions in
... Using a graph, show through the relationship of chemical potential and temperature how the freezing and boiling temperatures of a liquid change when a non-volatile solute is added to it. The solid dissolves neither in the solid solvent nor the vapour [4 marks] ...
... Using a graph, show through the relationship of chemical potential and temperature how the freezing and boiling temperatures of a liquid change when a non-volatile solute is added to it. The solid dissolves neither in the solid solvent nor the vapour [4 marks] ...
Chapter 9: Non-aqueous media
... The relative permittivity of NH3 is considerably less than that of H2 O and, as a consequence, the ability of liquid NH3 to dissolve ionic compounds is generally less than that of water. Exceptions include ½NH4 þ salts, iodides and nitrates which are usually readily soluble. For example, AgI, which ...
... The relative permittivity of NH3 is considerably less than that of H2 O and, as a consequence, the ability of liquid NH3 to dissolve ionic compounds is generally less than that of water. Exceptions include ½NH4 þ salts, iodides and nitrates which are usually readily soluble. For example, AgI, which ...
AP Chemistry Chapter 1: Chemical Foundations
... Concept Check Which of the following is a homogeneous mixture? ...
... Concept Check Which of the following is a homogeneous mixture? ...
powerpoint
... Image taken from http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/imgkin/vapp2.gif on 8/11/11. ...
... Image taken from http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/imgkin/vapp2.gif on 8/11/11. ...
Surface chemistry Surface chemistry deals with phenomena that
... (iii) Associated colloids (Micelles): There are some substances which at low concentrations behave as normal strong electrolytes, but at higher concentrations exhibit colloidal behaviour due to the formation of aggregates. The aggregated particles thus formed are called micelles. or associated coll ...
... (iii) Associated colloids (Micelles): There are some substances which at low concentrations behave as normal strong electrolytes, but at higher concentrations exhibit colloidal behaviour due to the formation of aggregates. The aggregated particles thus formed are called micelles. or associated coll ...
SCH 3U - Norbraten
... Now, as these things increase in strength it becomes harder to remove the molecules from each other. Therefore, one would expect the melting and boiling points to be higher for those substances which have strong intermolecular forces. We know that it takes energy to go from a solid to a liquid to a ...
... Now, as these things increase in strength it becomes harder to remove the molecules from each other. Therefore, one would expect the melting and boiling points to be higher for those substances which have strong intermolecular forces. We know that it takes energy to go from a solid to a liquid to a ...
Full-text
... Cobalt and nickel are widely used in different branches of industry. Cobalt and nickel have similar physicochemical properties; therefore, separation of the metals is of great practical value. Anion-exchange extraction by tertiary amines and quaternary ammonium salts can be used for Co(II) and Ni(II ...
... Cobalt and nickel are widely used in different branches of industry. Cobalt and nickel have similar physicochemical properties; therefore, separation of the metals is of great practical value. Anion-exchange extraction by tertiary amines and quaternary ammonium salts can be used for Co(II) and Ni(II ...
Determination of Alcohol Content of Wine by
... liquid occurs when the vapor pressure of the liquid equals the ambient atmospheric pressure. It is a common assumption that in a liquid mixture at a given pressure, each component boils at the boiling point corresponding to the given pressure and the vapors of each component will collect separately ...
... liquid occurs when the vapor pressure of the liquid equals the ambient atmospheric pressure. It is a common assumption that in a liquid mixture at a given pressure, each component boils at the boiling point corresponding to the given pressure and the vapors of each component will collect separately ...
Solutions
... it compares masses. It represents the ratio between the mass of a solute and the total mass of a solution. Instead of multiply by 100 you multiply by 1,000,000. ppm is often used to measure concentrations of solutes that are present in very small amounts. For example if you wanted to measure the con ...
... it compares masses. It represents the ratio between the mass of a solute and the total mass of a solution. Instead of multiply by 100 you multiply by 1,000,000. ppm is often used to measure concentrations of solutes that are present in very small amounts. For example if you wanted to measure the con ...
Liquid
A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. As such, it is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape. A liquid is made up of tiny vibrating particles of matter, such as atoms, held together by intermolecular bonds. Water is, by far, the most common liquid on Earth. Like a gas, a liquid is able to flow and take the shape of a container. Most liquids resist compression, although others can be compressed. Unlike a gas, a liquid does not disperse to fill every space of a container, and maintains a fairly constant density. A distinctive property of the liquid state is surface tension, leading to wetting phenomena.The density of a liquid is usually close to that of a solid, and much higher than in a gas. Therefore, liquid and solid are both termed condensed matter. On the other hand, as liquids and gases share the ability to flow, they are both called fluids. Although liquid water is abundant on Earth, this state of matter is actually the least common in the known universe, because liquids require a relatively narrow temperature/pressure range to exist. Most known matter in the universe is in gaseous form (with traces of detectable solid matter) as interstellar clouds or in plasma form within stars.