Ppt on diffusion in chemistry

Chapter Five 1 Hall © 2005 Prentice Hall © 2005 General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry Gases Chapter Five.

the NH 3 bottle? Chapter Five 53 Hall © 2005 Prentice Hall © 2005 General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry Effusion Effusion is the process in which a gas escapes from its container through a tiny hole, or orifice, into a vacuum. Effusion is (mathematically) simpler than diffusion since effusion does not involve molecular collisions. At a fixed T, the rates of/


Chemistry, what’s Next?: Probability, Quantum Mechanics with Bioscience (Transcription Factors in a Cell) 2014.10.10 전승준 고려대학교 화학과.

. Chem. 1989 264, 675–678 Facilitated Target Location both 1D sliding and 3D Space hopping and jumping (intramolecular dissociation/reassociation events) Adam, G. & Delbrück, M. Reduction of dimensionality in biological diffusion processes. in Structural Chemistry and Molecular Biology (eds. Rich, A. & Davidson, N.) 198–215 (W.H. Freeman and Company, San Francisco; London, 1968) Searching a rare event : Global minimum of binding energy/


Chapter 11 Lipids and Membranes. Lipids Biomolecules defined in terms of solubility:  Insoluble in water but soluble in nonpolar solvents.  Waxy, greasy.

MR, Chemistry for Today: General, Organic and Biochemistry, 7 th Edition, 2011 Phospholipids form bilayer in cell membrane  Membrane lipids: R esponsible for many membrane properties  Membrane fluidity refers to the viscosity of the lipid bilayer  Lipids may diffuse, or move around, within the membrane  Lipids may also flip from one side of the membrane to the other Figure 11.25 Lateral Diffusion in Biological/


Advanced Analytical Chemistry – CHM 6157® Y. CAIFlorida International University Updated on 11/6/2006Chapter 10SFC-SFE Chapter 10 Supercritical fluid chromatography.

a sample preparation technique. 3.1Principles of SFE Three interrelated factors influence recovery of the target compounds as shown in the SFE triangle: Advanced Analytical Chemistry – CHM 6157® Y. CAIFlorida International University Updated on 11/6/2006Chapter 10SFC-SFE Solubility Diffusion Matrix Advanced Analytical Chemistry – CHM 6157® Y. CAIFlorida International University Updated on 11/6/2006Chapter 10SFC-SFE Solubility The solute must, firstly, be/


APPROACH TO LYMPHOID MALIGNANCIES. Patient Evaluation of ALL Careful history and PE CBC Chemistry studies Bone marrow biopsy Lumbar puncture.

nodes, celiac nodes, or portal nodes III 2 Subdiaphragmatic involvement includes paraaortic, iliac or mesenteric nodes plus structures in III 1 IV Involvement of extranodal site(s) beyond that designated as “E” More than one extranodal deposit /history and physical examination CBC Erythrocyte sedimentation rate (ESR) Chemistry studies of major organ function CT scan of chest, abdomen and pelvis – PET and gallium scan for more aggressive subtypes (e.g.diffuse large B cell lympoma) Bone marrow biopsy ESR Serum/


Diffusion studies in humic gels Marek Burian Martina Klučáková Miloslav Pekař Institute of Physical and Applied Chemistry Faculty of Chemistry Brno University.

ř Institute of Physical and Applied Chemistry Faculty of Chemistry Brno University of Technology Purkyňova 118 612 00 Brno Czech Republic why study diffusion of metal ions in humic gels? àHA form very easily complexes with ions of transition metals àrate of interaction in sol >> rate of interaction in solid àstrongly diffusion-effected interaction with solid HA àdiffusion effect in heterogenous system model system for diffusion study = humic gel àexperimentally/


Chapter Five 1 Hall © 2005 Prentice Hall © 2005 General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry Gases Chapter Five.

the NH 3 bottle? Chapter Five 58 Hall © 2005 Prentice Hall © 2005 General Chemistry 4 th edition, Hill, Petrucci, McCreary, Perry Effusion Effusion is the process in which a gas escapes from its container through a tiny hole, or orifice, into a vacuum. Effusion is (mathematically) simpler than diffusion since effusion does not involve molecular collisions. At a fixed T, the rates of/


Making Solar Cells D. Venkataraman (DV) Department of Chemistry Umass Amherst June 29, 2010.

of Chemistry Umass Amherst dv@chem.umass.edu June 29, 2010 Efficiency of Photovoltaic Cells Depend on Absorption in the Solar Spectrum Charge Separation Charge Mobility Charge Collection Photovoltaic Cells Exciton Active Material Source: National Renewable Energy Laboratory Organic Photovoltaic Devices Stability Efficiency Cost End-User Application Konarka Home Depot/BP Solar What is the Problem? Si or III-V Cells Exciton diffusion/


How well do we understand multiphase oxidation in the troposphere? At the begining… Phase transfer Bulk and surface reactivity Conclusions… Christian.

solvation is not the rate limiting step (?) Various models –cluster predict the slope between S and H –capillary-wave can be fitted to the experimental data –diffusion Challenge 2: understand bulk chemistry What can happen once in the liquid? As already mentioned, the solute can undergo –solvation –acid-base dissociation The solute can also react with various partners –water (the most abundant!) aldehydes/


Metallization of Submicron Features Case Western Reserve University

parameters or extreme assumptions S P time ? Experimental Setup Plating Conditions: Additives: RDE Cu/CuSO4 Reference Syringe Additives Copper plating chemistry Plating Conditions: Electrolyte : 0.5 M CuSO4 + H2SO4 (pH~2) Galvanostatic : i = 30 mA/cm2 Rotation /THE VIA Modeling of Via Fill* Additives Transient Processes INSIDE THE VIA Adsorption R = 0.1 μ L = 1 μ Diffusion IN OUT DIFFUSION ADSORPTION PEG-SPS INTERACT PEG Transport PEG Coverage SPS Coverage *R. Akolkar and U. Landau, Abstract No. 157-E1, /


Copper Electrodeposition on Diffusion Barrier Films- A literature review by Batric Pesic 209 th ECS Meeting-Denver, CO May 07-12, 2006 J1-Electrochemical.

conformal and superconformal (superfilling) modes of electrodeposition  2005 P.M. Vereecken, R.A. Binstead, H. Deligianni, P.C. Andriacacos The chemistry of additives in damascene plating, IBM J. Res.&Dev. Vol. 49. No. 1 January 2005  2005 T.P. Moffat, D. Wheeler, M.D/has already been postulated, i.e. at most adds some marginal knowledge. More research (chemistry) is needed in the area of direct copper plating on diffusion barriers to avoid a processing step for formation of a seed layer. More research is /


Unit Two: Diabetes Serious effects a disease within one system can have on homeostasis in the body as a whole.

(food cal/g) Food Energy (joules/g) Food Energy (kilojoules/g) Energy gained by water (chemistry calories) = (mass of water) x (change in temperature) x (specific heat of water) The specific heat of water is 1 calorie ÷ (1 /11B Transport Across Membrane Passive Diffusion- Passive Transport Facilitated Diffusion- Passive Transport with HELP Osmosis- Passive with WATER Active Transport- Requires ATP= Energy! Facilitated Exocytosis Endocytosis Diffusion Particles spread out evenly in an available space Moving /


Modeling the chemical evolution of galaxies Mercedes Mollá CIEMAT La Cristalera, Abril 2015 Stars, interstellar medium, galaxies, and the chemistry between.

l ) La Cristalera, Abril 2015 Stars, interstellar medium, galaxies, and the chemistry between them Star formation in the halo: SFR  g 1.5 In the disc molecular clouds form from the diffuse gas c  g 1.5 Stars form through cloud-cloud collisions: s / Abril 2015 Stars, interstellar medium, galaxies, and the chemistry between them  We can obtain separately the radial distributions of diffuse and molecular gas  The radial gradients flattens in the inner disk in agreement with data (Smartt et al. 2001) /


ISM Lecture 13 H 2 Regions II: Diffuse molecular clouds; C + => CO transition.

dust + photoionization of large molecules/PAHs  Cooling: fine structure excitation and emission from [C II] 13.2 Chemistry in diffuse clouds  Detailed models needed to understand observed abundances of molecules  Started with Kramers & ter Haar 1946, Bates/Modern view  Neutral-neutral reactions also significant at low T  Grain surface formation minor role in diffuse clouds (except for H 2 ); major role in dense clouds Tielens Chap. 8.7-8.8 Ion-molecule collisions  Interaction potential (induced dipole /


Copyright© 2008 TSI Incorporated Nanoparticle Monitoring in Occupational Environments – Comparing and Contrasting Measurement Metrics TSI Incorporated.

2008 TSI Incorporated Nanoparticle Exposure What experts say If nanoparticles can... i.Deposit in the lung and remain there ii.Have active surface chemistry iii.Interact with the body... there is the potential for exposure and /Sizer 1 Surface area can be calculated using SPMS size distribution data. Aerosol Technology Comparisons Application Comparison PhotometerOPCCPC Diffusion charger Indoor Air Quality - Conventional StudiesGood N/A Indoor Air Quality - Ultrafine Particle TrackingPoorN/AExcellentN/A /


Liquids and Solids Chapter 12. 2 Liquid Has a definite volume and indefinite shape Particles are in constant motion Closer together than gases Less kinetic.

times denser than their gases. Particles are closer together Different liquids can vary greatly in density Chemistry chapter 12 5 Density Chemistry chapter 12 6 Incompressibility Liquids are much less compressible than gases Particles are closer together Liquids can transmit pressure throughout themselves Chemistry chapter 12 7 Diffusion Liquids diffuse in other liquids in which they can dissolve Much slower than gases Particles closer together Attraction between particles/


1 Material was developed by combining Janusa’s material with the lecture outline provided with Ebbing, D. D.; Gammon, S. D. General Chemistry, 8th ed.,

actions of individual atoms Volume of particles can be neglected but volume of container cannot. Particles are in constant motion; move in straight lines in all directions and at various speeds (smaller mass, faster it moves). No inherent attractive or repulsive /, D. D.; Gammon, S. D. General Chemistry, 8th ed., Houghton Mifflin, New York, NY, 2005. Majority of figures/tables are from the Ebbing lecture outline. Molecular Speeds; Diffusion and Effusion Diffusion is the transfer of a gas through space or /


ERIC HERBST DEPARTMENTS OF PHYSICS, CHEMISTRY AND ASTRONOMY THE OHIO STATE UNIVERSITY Gas and Dust (Interstellar) Astrochemistry.

 AB association H + H  H 2 H + X  XH (X = O, C, N, CO, etc.) MODELLING DIFFUSIVE SURFACE CHEMISTRY Rate Equations The rate coefficient is obtained by Method accurate if N>1Biham et al. 2001 Master Equation F=fS (atoms per grain per /Heat from star formation evaporates grain mantles close to star. Strong deuterium fractionation for methanol thought to arise from grain processes in previous cold era involving D atoms. HOT MOLECULAR CORES Hot cores are regions of warm, quiescent gas near high-mass star/


PowerPoint to accompany Chapter 9b-2 Gases. Brown, LeMay, Bursten, Murphy, Langford, Sagatys: Chemistry 2e © 2010 Pearson Australia Dalton’s Law of Partial.

Ower the sake o won wee ferty. Brown, LeMay, Bursten, Murphy, Langford, Sagatys: Chemistry 2e © 2010 Pearson Australia Graham’s Law of Effusion & Diffusion  The ratio of the rates of effusion of two gases is equal to the square /Rate2 = square root of (Mass2 / Mass 1) Brown, LeMay, Bursten, Murphy, Langford, Sagatys: Chemistry 2e © 2010 Pearson Australia Graham’s Law of Effusion & Diffusion  For the 2 common gases in air: the rate off effusion of Nitrogen and Oxygen.  N 2, Nitrogen, has a molecular mass /


Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh Edition Copyright © 2012 by Pearson Education, Inc. Chapter 15 Lipids.

converted to prostaglandins such as PGE and PGF that produce inflammation and pain in the area. 21 Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh Edition Copyright © 2012 by Pearson Education, Inc. Prostaglandins: NSAIDs/high concentration to low concentration is called A. facilitated transport B. diffusion C. active transport 100 Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh Edition Copyright © 2012 by Pearson Education, Inc. Solution /


Molecular Survival in Planetary Nebulae: Seeding the Chemistry of Diffuse Clouds? Jessica L. Dodd Lindsay Zack Nick Woolf Emily Tenenbaum Lucy M. Ziurys.

! If molecules can survive the intense radiation in a PNe for 12,000 years, they can survive in the ISM and be recycled into Diffuse Clouds! The molecules that do survive this stage seed the chemistry that is seen in Diffuse Clouds The molecules that do survive this stage seed the chemistry that is seen in Diffuse Clouds Greater chemical complexity in the ISM can be achieved, not starting with/


Unit Two: Diabetes Serious effects a disease within one system can have on homeostasis in the body as a whole.

Food Scientist  Start 2.3.2: Diabetic Emergency Activity 2.2.4 Math Review  Energy gained by water (chemistry calories) = (mass of water) x (change in temperature) x (specific heat of water)  The specific heat of water is 1 calorie ÷ (1 g x / side  Solute examples  Sugars, amino acids, ions and water Facilitated Diffusion Solute Molecule Transport Protein Look Familiar?  DIFFERENT!  NOT about the movement of solute!!!  The diffusion of water across a membrane  Water travels from a solution of lower /


Unit Two: Diabetes Serious effects a disease within one system can have on homeostasis in the body as a whole.

Food Scientist  Start 2.3.2: Diabetic Emergency Activity 2.2.4 Math Review  Energy gained by water (chemistry calories) = (mass of water) x (change in temperature) x (specific heat of water)  The specific heat of water is 1 calorie ÷ (1 g x / side  Solute examples  Sugars, amino acids, ions and water Facilitated Diffusion Solute Molecule Transport Protein Look Familiar?  DIFFERENT!  NOT about the movement of solute!!!  The diffusion of water across a membrane  Water travels from a solution of lower /


Observations of H 3 + The Initiator of Interstellar Chemistry Benjamin McCall Oka Ion Factory University of Chicago Thomas Geballe Gemini Observatory (HI)

Geballe, Hinkle, & Oka Science 279, 1910 (1998) CO Observations N(CO) ~ few ×10 16 cm -2  CO scarce  diffuse  velocity consistent with H 3 +, C 2 Diffuse H 3 + Chemistry k e n(H 3 + ) n(e - ) Formation: Destruction:  n(H 2 ) Steady State: Rate: (~ 10 -6/Clouds: Path length H 2 number density Kinetic temperature Confirmation of ion-neutral scheme Diffuse Clouds: Apparently long path lengths? Rich chemistry even in rarefied environment? Insight into Diffuse Interstellar Bands? Probing a new ISM component?


U.S. Environmental Protection Agency Office of Research and Development Towards building better linkages between aqueous phase chemistry and microphysics.

Solvers for Atmospheric Chemistry Problems II: Rosenbrock Solvers. Atmospheric Environment, 31 (20), 3459-3472. [9] Schwartz, S.E. (1986) Mass-transport considerations pertinent to aqueous-phase reactions of gases in liquid water clouds. In Chemistry of Multiphase Atmospheric/ORGC Table 1. Gas phase species that participate in phase transfer and associated gas phase diffusion and accommodation coefficients. Henry’s Law coefficients are equal to those in AQCHEM-base. Table 3. Dissociation reactions and /


Water’s Unique Properties The Inorganic Chemistry of Water

these processes all counterbalance so the average salinity of seawater remains constant. The ocean is said to be in chemical equilibrium. The Inorganic Chemistry of Water Chapter 6 Page 6-17 Salinity, Temperature, and Water Density Although the ocean’s average/proteins, including hemoglobin and enzymes. Other trace metals used in enzymes include manganese, copper, and zinc. The Organic Chemistry of Water Chapter 6 Pages 6-27 to 6-29 Diffusion and Osmosis Diffusion is the tendency for a liquid, gas, or solute/


The Twelve Principles of Green Chemistry

Engineering.1998, 1, 109. “Pollution Prevention via Molecular Recognition and Self Assembly: Non-Covalent Derivatization.” Warner, John C., in “Green Chemistry: Frontiers in Benign Chemical Synthesis and Processes.” Anastas, P. and Williamson, T. Eds., Oxford University Press, London. pp 336 - 346. 1998. “Non-Covalent Derivatization: Diffusion Control via Molecular Recognition and Self Assembly”. Guarrera, D. J.; Kingsley, E.; Taylor, L. D.; Warner, John C/


Department of Chemistry, School of Engineering and Physical Sciences, Heriot-Watt University Photons, Electrons and Desorption An Application of Laboratory.

-Watt University Photons, Electrons and Desorption An Application of Laboratory Surface Science in Astrophysics Martin McCoustra Department of Chemistry, School of Engineering and Physical Sciences, Heriot-Watt University NGC 3603 W. Brander (JPL/IPAC), E. K. Grebel (University of Washington) and Y. -H. Chu (University of Illinois, Urbana- Champaign) Diffuse ISM Dense Clouds Star and Planet Formation (Conditions for Evolution of Life and/


Department of Chemistry, School of Engineering and Physical Sciences, Heriot-Watt University Probing the Gas-Grain Interaction Applications of Laboratory.

may account for the Diffuse Interstellar Bands and Unidentified Infrared Bands)  PAHs likely to be incorporated into icy grain mantles and are strongly absorbing in the near UV region  Can we detect desorption of C 6 H 6 or even H 2 O following photon absorption? Is there any change in the ice morphology following photon absorption? Is there chemistry? Shining a Little Light/


Department of Chemistry, School of Engineering and Physical Sciences, Heriot-Watt University Probing the Gas-Grain Interaction Applications of Laboratory.

may account for the Diffuse Interstellar Bands and Unidentified Infrared Bands)  PAHs likely to be incorporated into icy grain mantles and are strongly absorbing in the near UV region  Can we detect desorption of C 6 H 6 or even H 2 O following photon absorption? Is there any change in the ice morphology following photon absorption? Is there chemistry? Shining a Little Light/


Combustion Modeling in FLUENT

mixing and kinetic time scales are comparable (requires Da >>1). No rigorous accounting for turbulence-chemistry interactions Difficulty in predicting intermediate species and accounting for dissociation effects. Uncertainty in model constants, especially when applied to multiple reactions. Conserved Scalar (Mixture Fraction) Approach: The PDF Model Applies to nonpremixed (diffusion) flames only Assumes that reaction is mixing-limited Local chemical equilibrium conditions prevail. Composition and/


Formazione e Controllo di Inquinanti nella Combustione Impianti di trattamento effluenti Combustion Theory 2: premixed and diffusion flames Prof. L.Tognotti.

and products are mixed by turbulent motion before reaction and reaction rate is dominated by chemistry. This represents the limit of a perfectly stirred reactor, in which flame speed is independent of Reynolds number. Most practical situations correspond to high /2 is then a stable operation point Combustion Theory 42 Stability diagram for methane-air mixtures Premixed vs diffusion flames Laminar diffusion flames Combustion Theory 45 The solid fuel is first heated by heat transfer induced by combustion. The /


The Twelve Principles of Green Chemistry. 12 Principles of Green Chemistry 1. Prevention. It is better to prevent waste than to treat or clean up waste.

Engineering.1998, 1, 109. “Pollution Prevention via Molecular Recognition and Self Assembly: Non-Covalent Derivatization.” Warner, John C., in “Green Chemistry: Frontiers in Benign Chemical Synthesis and Processes.” Anastas, P. and Williamson, T. Eds., Oxford University Press, London. pp 336 - 346. 1998. “Non-Covalent Derivatization: Diffusion Control via Molecular Recognition and Self Assembly”. Guarrera, D. J.; Kingsley, E.; Taylor, L. D.; Warner, John C/


Astrochemistry: Discovery of Novel Forms of Water in Uranus and Neptune Nir Goldman Lawrence Livermore National Laboratory March 8 th, 2006 This work was.

yield very diverse results for H 2 O at extreme conditions Great need for description of interior chemistry in order to derive models consistent with observational data EOS models relate pressure and temperature to chemical composition /-T conditions of the interior could have unique chemistry which affect planetary processes Uranus and its moons, from Voyager II Diffusion constant and vibrational spectral results Superionic diffusion of hydrogens occurs in presence of disordered oxygen phase –At 2000K, /


Computational Chemistry G. H. CHEN Department of Chemistry University of Hong Kong.

Develop tools for representing & analyzing sequence similarity & variation Computational Chemistry Increasingly important field in chemistry Help to understand experimental results Provide guidelines to experimentists Application in Materials & Pharmaceutical industries Future: simulate nano-size materials, bulk / diffuse s & p orbitals to atoms in 1st & 2nd rows (Li - Cl). 6-31G** - adds a set of diffuse s and p orbitals to atoms in 1st & 2nd rows (Li- Cl) and a set of diffuse s functions to H Diffuse /


Computational Chemistry G. H. CHEN Department of Chemistry University of Hong Kong.

Develop tools for representing & analyzing sequence similarity & variation Computational Chemistry Increasingly important field in chemistry Help to understand experimental results Provide guidelines to experimentists Application in Materials & Pharmaceutical industries Future: simulate nano-size materials, bulk / diffuse s & p orbitals to atoms in 1st & 2nd rows (Li - Cl). 6-31G** - adds a set of diffuse s and p orbitals to atoms in 1st & 2nd rows (Li- Cl) and a set of diffuse s functions to H Diffuse /


4 Introduction to Process Analysis and Selection Treatment methods in which the application of physical forces predominate are known as physical unit operations.

The fouling factor F is used to account for both internal and external fouling of air diffusers. Internal fouling is caused by impurities in the compressed air, whereas external fouling is caused by the formation of biological slimes and /3) phosphorus removal using metal salts and polymers (4) phosphorus removal using lime. (4) phosphorus removal using lime. Chemistry of Phosphate Precipitation The chemical precipitation of phosphorus is brought about by the addition of the salts of multivalent metal ions /


Netherlands Graduate School of Linguistics LOT Summer School 2006 Issues in the biology and evolution of language Massimo Piattelli-Palmarini University.

. n … the genes themselves may [thus] be eliminated from the discussion.” n Hormones and skin pigments are other kinds of morphogens LOT Summer 2006The return of the laws of form48 In essence n The physics and the chemistry of the reaction- diffusion processes is all we need n The genes speed up certain processes, and that’s all. n We can ignore them/


8-1 Lecture 8: Plutonium Chemistry From: Chemistry of actinides §Nuclear properties and isotope production §Pu in nature §Separation and Purification §Atomic.

purification methods §LaF 3 for precipitation of trivalent and tetravalent actinides 8-8 8-9 Pu separations Solvent extraction §Some novel chemistry with third phase formation http://www.nap.edu/books/0309052262/html/41.html 8-10 Pu separations Extraction chromatography §Extractant on /at room temperature §Si, Zn, Zr, and Hf retain phase under rapid cooling Microstructure of  phase due to Ga diffusion in cooling Np expands the  and  phase region   phase stabilized at room temperature with Hf, Ti, and Zr/


8-1 Lecture 8: Plutonium Chemistry From: Chemistry of actinides §Nuclear properties and isotope production §Pu in nature §Separation and Purification §Atomic.

that stabilize  phase §Al, Ga, Ce, Am, Sc, In, and Tl stabilize phase at room temperature §Si, Zn, Zr, and Hf retain phase under rapid cooling Microstructure of  phase due to Ga diffusion in cooling Np expands  and  phase region   phase stabilized at/May include some water saturated of hydrated surface §Prepared by addition of base or water to acidic solutions 8-118 Pu aqueous chemistry: colloids Characterization §SANS àLong, thin rods 4.7 nm x 190 nm §Light scattering àSpherical particles à1 nm to/


➜ HINTS Chemistry Topic 1 Particles 1.1 Particle model (page 73) 1.Re-read the bullet point lists for each state of matter at the bottom of page 72. 2.Think.

and mercury on page 75. 4.In both examples particles would gain energy, but there are different changes to be seen for each state. 5.Think about the weather conditions needed for puddles to dry up. Science Progress © Hodder & Stoughton 2014 ➜ HINTS Chemistry Topic 1 Particles 1.3 Diffusion and gas pressure (page 77) 1.Remember diffusion happens due to movement of particles. 2/


TOPOTACTIC SOLID-STATE SYNTHESIS METHODS: HOST-GUEST INCLUSION CHEMISTRY Ion-exchange, injection, intercalation type synthesis Ways of modifying existing.

F to C 40 F (white) intercalation via HF 2 - not F - - relative size, charge, ion, dipole, polarizability effects - less strongly interacting - more facile diffusion G (HF/F 2 /450 o C)  CF 0. 68 to CF (white) G (H 2 SO 4 conc.)  C 24 (HSO 4 ).2H 2 SO/ SINGLE PHASE? Traditional heat and beat xB + yC (2350 o C)  BC x Maximum 2.35 at% B incorporation in C Poor quality not well-defined materials New approach, soft chemistry, low T, flow reaction, quartz tube 2BCl 3 + C 6 H 6 (800 o C)  2BC 3 (lustrous film/


2012 General Chemistry I 1 Chapter 4. THE PROPERTIES OF GASES 2012 General Chemistry I THE NATURE OF GASES THE GAS LAWS 4.1 Observing Gases 4.2 Pressure.

the number of moles of molecules of the gas expressed as a fraction of the total number of moles of molecules in the sample. 2012 General Chemistry I 34 EXAMPLE 4.7 Air is a source of reactants for many chemical processes. To determine how much air/4.13 The Liquefaction of Gases 4.14 Equations of State of Real Gases 2012 General Chemistry I 37 MOLECULAR MOTION (Sections 4.9-4.11) 4.9 Diffusion and Effusion  Diffusion: gradual dispersal of one substance through another substance  Effusion: escape of a gas /


Principles of Flow Chemistry. Overview What is flow chemistry? Flow Chemistry vs Batch Chemistry Key principles of Flow Chemistry Residence Time Mixing.

each. Increase the reactor volume to 4 mL. Mixing In batch chemistry, mixing is turbulent In flow chemistry, the mixing can be turbulent or laminar Small tube diameter results in laminar flow conditions (Reynolds number Re<2500) Radial diffusion In turbulent flow conditions, static mixers are used to increase mass transfer In laminar flow conditions, mixing occurs by diffusion Diffusion time is proportional to distance squared, therefore over short distances/


The Chemistry of Life Cornell Notes. The Chemistry of Life What are things made of?

broken down into simpler chemical substances (gold, Silver, Carbon) Hydrogen The Chemistry of Life Element Symbol Atomic Mass (protons+ electrons+ neutrons) Atomic Number (# Electrons or Protons) Trace elements The Chemistry of Life Elements make up all things, including living things.  Elements /up thin tubes. This property makes it possible for water to get from roots in the ground to the leaves of the tallest trees. Diffusion is the net movement of particles from an area of higher concentration to an /


Honors Chemistry, Chapter 10 Page 1 Chapter 10 – Physical Characteristics of Gases.

in the liquid or solid state. Compressibility – During compression, the gas particles, which are initially very far apart (assumption 1), are crowded closer together. Under the influence of pressure, the volume of a gas can be greatly decreased. Honors Chemistry, Chapter 10 Page 7 Nature of Gases Diffusion/: expansion, density, fluidity, compressibility, diffusion, and effusion. 5.Describe the conditions under which a real gas deviates from “ideal” behavior. Honors Chemistry, Chapter 10 Page 11 Pressure and /


14-1 RFSS: Part 1 Lecture 14 Plutonium Chemistry From: Pu chapter §http://radchem.nevada.edu/c lasses/rdch710/files/plutoniu m.pdf §Nuclear properties.

salts àMono hydroxide mixed solid species formed §Pu(V) disproportionates §Pu(VI)O 2 oxalates 14-23 Pu solution chemistry Halides §Studies related to Pu separation and metal formation §Solid phase double salts discussed Cation-cation complexes §Bridging over yl/ stabilize  phase §Al, Ga, Ce, Am, Sc, In, and Tl stabilize phase at room temperature §Si, Zn, Zr, and Hf retain phase under rapid cooling Microstructure of  phase due to Ga diffusion in cooling Np expands  and  phase region   phase stabilized/


2013 General Chemistry I 1 Chapter 4. THE PROPERTIES OF GASES 2013 General Chemistry I THE NATURE OF GASES THE GAS LAWS 4.1 Observing Gases 4.2 Pressure.

to be 0.890 atm. (a)If the atmospheric pressure is 762 Torr, what height difference between the two sides of the mercury in the manometer did the student find? (b) Which side is higher, the side of the manometer attached to the bulb or the / 4.13 The Liquefaction of Gases 4.14 Equations of State of Real Gases 2013 General Chemistry I 45 MOLECULAR MOTION (Sections 4.9-4.11) 4.9 Diffusion and Effusion  Diffusion: gradual dispersal of one substance through another substance  Effusion: escape of a gas through /


CHEMISTRY LAB MICHIGAN SCIENCE OLYMPIAD COACHES WORKSHOP AT MSU SATURDAY, DECEMBER 5, 2015 PRESENTED BY: MIKE REED, MICHIGAN SCIENCE OLYMPIAD.

APRONS 1.DESCRIPTION: Teams will complete one or more tasks and answer a series of questions involving the science processes of chemistry focused in the areas of kinetics and gases. A TEAM OF UP TO: 2 EYE PROTECTION: C APPROX. TIME: 50 min./such as: Determine the: density of a gas, partial pressure of a gas, molar mass of a gas, relative rates of diffusion. Examine the relationship between: Pressure and volume, Pressure and temperature, Temperature and volume 5. SCORING: Approximately Kinetics 50% and Gases/


Living Environment, Mr. Lynch. Topics to be Covered: Basic Chemistry Atoms, Bonds, Polarity, pH Organic Chemistry Carbohydrates, Lipids, Proteins, Nucleic.

Living Environment, Mr. Lynch Topics to be Covered: Basic Chemistry Atoms, Bonds, Polarity, pH Organic Chemistry Carbohydrates, Lipids, Proteins, Nucleic Acid Cell Organelles Plant vs. Animal Cell Cellular Respiration Photosynthesis Enzymes Cell Membrane Transport Diffusion, Osmosis and Active Transport Cellular Communication Mitosis Lesson #1 – Basic Chemistry LO: Discuss basic properties of atoms in order to understand the chemistry of life. Homework: Read textbook pages 40-43. Complete/


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