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document.write("<OPTION VALUE='index.html' STYLE='color:#FFFFFF; background:#63C6DE; font:normal 9pt arial;'>Free Chemistry Tutorials")
document.write("<OPTION VALUE='sigfig.html'>Significant Figures")
document.write("<OPTION VALUE='notation.html'>Scientific Notation")
document.write("<OPTION VALUE='tempconv.html'>Temperature Conversions")
document.write("<OPTION VALUE='massconv.html'>Mass Conversions")
document.write("<OPTION VALUE='voluconv.html'>Volume Conversions")
document.write("<OPTION VALUE='density.html'>Density Calculations")
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document.write("<OPTION VALUE='elements.html'>Elements and Compounds")
document.write("<OPTION VALUE='allotropy.html'>Allotropes")
document.write("<OPTION VALUE='nonmetals.html'>Metals and Non-metals")
document.write("<OPTION VALUE='elemhist.html'>History of the Elements")
document.write("<OPTION VALUE='chemphys.html'>Physical and Chemical Changes")
document.write("<OPTION VALUE='pthistor.html'>History of the Periodic Table")
document.write("<OPTION VALUE='pertable.html'>Periodic Table of the Elements")
document.write("<OPTION VALUE='trendgp1.html'>Periodic Trends (Group I Elements)")
document.write("<OPTION VALUE='trendgp2.html'>Periodic Trends (Group II Elements)")
document.write("<OPTION VALUE='trendgp7.html'>Periodic Trends (Group VII Elements)")
document.write("<OPTION VALUE='trendpd2.html'>Periodic Trends (Period 2 Elements)")
document.write("<OPTION VALUE='trendpd3.html'>Periodic Trends (Period 3 Elements)")
document.write("<OPTION VALUE='atomichist.html'>Brief History of Atomic Theory")
document.write("<OPTION VALUE='econfig.html'>Electron Configuration")
document.write("<OPTION VALUE='quantum.html'>Quantum Numbers")
document.write("<OPTION VALUE='wriiform.html'>Writing Ionic Formula")
document.write("<OPTION VALUE='namiform.html'>Naming Ionic Compounds")
document.write("<OPTION VALUE='empirical.html'>Empirical and Molecular Formula")
document.write("<OPTION VALUE='balcheme.html'>Balancing Chemical Equations")
document.write("<OPTION VALUE='mmcalcul.html'>Molecular Mass (Formula Weight)")
document.write("<OPTION VALUE='percentc.html'>Percent Composition")
document.write("<OPTION VALUE='moledefs.html'>Definitions of a mole")
document.write("<OPTION VALUE='massmole.html'>Mass-Mole Calculations")
document.write("<OPTION VALUE='concsols.html'>Molarity of Solutions Calculations")
document.write("<OPTION VALUE='dilucalc.html'>Dilution of Solutions Calculations")
document.write("<OPTION VALUE='molreact.html'>Reaction Calculations - Mass and Moles")
document.write("<OPTION VALUE='exceslim.html'>Limiting Reagents and Reactants in Excess")
document.write("<OPTION VALUE='yield.html'>Yield")
document.write("<OPTION VALUE='lewisstr.html'>Lewis Structures (electron dot diagrams)")
document.write("<OPTION VALUE='shapemol.html'>Shapes of Molecules")
document.write("<OPTION VALUE='bondpola.html'>Bond Polarity & Electronegativity")
document.write("<OPTION VALUE='molpolar.html'>Molecule Polarity")
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document.write("<OPTION VALUE='metallic.html'>Metallic Bonding")
document.write("<OPTION VALUE='ionicbond.html'>Ionic Bonding")
document.write("<OPTION VALUE='covalent.html'>Covalent Bonding")
document.write("<OPTION VALUE='namctut1.html'>Summary of Naming Carbon Compounds")
document.write("<OPTION VALUE='namsanes.html'>Naming Straight Chain Alkanes")
document.write("<OPTION VALUE='nambanes.html'>Naming Branched-Chain Alkanes")
document.write("<OPTION VALUE='namsenes.html'>Naming Simple Alkenes")
document.write("<OPTION VALUE='namsynes.html'>Naming Simple Alkynes")
document.write("<OPTION VALUE='namisane.html'>Structural Isomers of Alkanes")
document.write("<OPTION VALUE='namisene.html'>Structural Isomers of Alkenes")
document.write("<OPTION VALUE='namhaloa.html'>Naming Haloalkanes")
document.write("<OPTION VALUE='alkanols.html'>Naming Alkanols")
document.write("<OPTION VALUE='fungroup.html'>Functional Groups")
document.write("<OPTION VALUE='combusta.html'>Combustion of Hydrocarbons")
document.write("<OPTION VALUE='halogalk.html'>Halogenation of Hydrocarbons")
document.write("<OPTION VALUE='hydrhala.html'>Hydrohalogenation of Hydrocarbons")
document.write("<OPTION VALUE='hydraten.html'>Hydration of Alkenes")
document.write("<OPTION VALUE='alkaolox.html'>Oxidation of Alkanols")
document.write("<OPTION VALUE='esters.html'>Esterification")
document.write("<OPTION VALUE='polymers.html'>Polymerization")
document.write("<OPTION VALUE='usehydrc.html'>Properties and Uses of Alkanes")
document.write("<OPTION VALUE='carboxyl.html'>Properties of Carboxylic Acids")
document.write("<OPTION VALUE='amines.html'>Properties of Amines")
document.write("<OPTION VALUE='sugars.html'>Carbohydrates (sugars)")
document.write("<OPTION VALUE='lipids.html'>Lipids (fats and oils)")
document.write("<OPTION VALUE='aminoacid.html'>Amino Acids")
document.write("<OPTION VALUE='proteins.html'>Proteins")
document.write("<OPTION VALUE='enzymes.html'>Enzymes")
document.write("<OPTION VALUE='dna.html'>DNA")
document.write("<OPTION VALUE='redsugar.html'>Reducing Sugars")
document.write("<OPTION VALUE='blood.html'>Chemistry of Blood")
document.write("<OPTION VALUE='trmetals.html'>Transition Metals Properties")
document.write("<OPTION VALUE='ligands.html'>Ligands and Complex Ions")
document.write("<OPTION VALUE='gaylusac.html'>Gay-Lussac's Law of Combining Gas Volumes")
document.write("<OPTION VALUE='avogadro.html'>Avogadro's Principle")
document.write("<OPTION VALUE='boylelaw.html'>Boyle's Law (Mariotte's Law)")
document.write("<OPTION VALUE='charslaw.html'>Charles' Law")
document.write("<OPTION VALUE='combinedg.html'>Combined Gas Equation")
document.write("<OPTION VALUE='idealgas.html'>Ideal Gas Law")
document.write("<OPTION VALUE='kinetic.html'>Kinetic Theory of Gases")
document.write("<OPTION VALUE='partialp.html'>Dalton's Law of Partial Pressures")
document.write("<OPTION VALUE='grahaml.html'>Graham's Laws of Effusion and Diffusion")
document.write("<OPTION VALUE='reactrate.html'>Rate of Reaction")
document.write("<OPTION VALUE='heatcapa.html'>Heat Capacity Calculations")
document.write("<OPTION VALUE='enthchan.html'>Defining Enthalpy Change")
document.write("<OPTION VALUE='manienth.html'>Manipulating Enthalpy Change")
document.write("<OPTION VALUE='heatreact.html'>Heat (enthalpy) of Reaction")
document.write("<OPTION VALUE='calorimy.html'>Calorimetry")
document.write("<OPTION VALUE='enerprof.html'>Energy Profiles")
document.write("<OPTION VALUE='hesslaw.html'>Hess's Law")
document.write("<OPTION VALUE='heatform.html'>Heat of Formation and Reaction")
document.write("<OPTION VALUE='heatbond.html'>Bond Energy and Heat of Reaction")
document.write("<OPTION VALUE='heatlatent.html'>Latent Heat (enthalpy)")
document.write("<OPTION VALUE='heatcomb.html'>Heat (enthalpy) of Combustion")
document.write("<OPTION VALUE='fuelsdef.html'>Fuel definitions")
document.write("<OPTION VALUE='equilibrium.html'>Equilibrium Concepts")
document.write("<OPTION VALUE='lechatsp.html'>Le Chatelier's Principle")
document.write("<OPTION VALUE='equicons.html'>Equilibrium Constants")
document.write("<OPTION VALUE='oxistate.html'>Oxidation Numbers")
document.write("<OPTION VALUE='redox.html'>Oxidation & Reduction")
document.write("<OPTION VALUE='displace.html'>Displacement Reactions")
document.write("<OPTION VALUE='voltcell.html'>Galvanic (voltaic) cells")
document.write("<OPTION VALUE='corrosion.html'>Corrosion and Rusting of Iron")
document.write("<OPTION VALUE='elecysis.html'>Electrolytic cells")
document.write("<OPTION VALUE='calcelemf.html'>Calculating electrochemical cell emf(voltage)")
document.write("<OPTION VALUE='halfeqtn.html'>Balancing half-equations")
document.write("<OPTION VALUE='battery.html'>Electrochemical cells & batteries")
document.write("<OPTION VALUE='faradayl.html'>Faraday Laws of Electrolysis")
document.write("<OPTION VALUE='nernst.html'>Nernst Equation")
document.write("<OPTION VALUE='hallhero.html'>Aluminium Production")
document.write("<OPTION VALUE='downscell.html'>Sodium Production")
document.write("<OPTION VALUE='gastests.html'>Gas Preparation and Tests")
document.write("<OPTION VALUE='acidbase.html'>Properties & Definitions of Acids & Bases")
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document.write("<OPTION VALUE='indicata.html'>Indicators for Titrations")
document.write("<OPTION VALUE='titrcalc.html'>Acid-base Titration Calculations")
document.write("<OPTION VALUE='titrcurv.html'>Acid-base Titration Curves")
document.write("<OPTION VALUE='redoxtitr.html'>REDOX Titrations")
document.write("<OPTION VALUE='solrules.html'>Summary of Solubility Rules")
document.write("<OPTION VALUE='ppteeqtn.html'>Writing Equations for Precipitation Reactions")
document.write("<OPTION VALUE='gravimetric.html'>Gravimetric Analysis")
document.write("<OPTION VALUE='chromato.html'>Summary of Chromatography Techniques")
document.write("<OPTION VALUE='spectros.html'>Summary of Spectroscopy Techniques")
document.write("<OPTION VALUE='infrared.html'>Infrared Spectroscopy")
document.write("<OPTION VALUE='massspec.html'>Mass Spectroscopy")
document.write("<OPTION VALUE='isotopes.html'>Isotopes")
document.write("<OPTION VALUE='atomicmass.html'>Relative Atomic Mass")
document.write("<OPTION VALUE='nuclesum.html'>Summary of Properties of Radioisotopes")
document.write("<OPTION VALUE='nucledec.html'>Nuclear Decay")
document.write("<OPTION VALUE='halflife.html'>Half-life Definition & Calculations")
document.write("<OPTION VALUE='smokedet.html'>Uses of radioisotopes in smoke detectors")
document.write("<OPTION VALUE='carbon14.html'>Radiocarbon dating using carbon-14")
document.write("<OPTION VALUE='colligative.html'>Colligative Properties of Solutions")
document.write("<OPTION VALUE='raoult.html'>Raoult's Law")
document.write("<OPTION VALUE='freezing.html'>Freezing Point Depression/Boiling Point Elevation")
document.write("<OPTION VALUE='osmoticp.html'>Osmotic Pressure")
document.write("<OPTION VALUE='soaps.html'>Soaps and Saponification")
document.write("<OPTION VALUE='detergent.html'>Synthetic Detergents")
document.write("<OPTION VALUE='waterana.html'>Water Analysis")
document.write("<OPTION VALUE='ccycle.html'>Carbon Cycle")
document.write("<OPTION VALUE='n2cycle.html'>Nitrogen Cycle")
document.write("<OPTION VALUE='cfcozone.html'>CFCs and Ozone Depletion")
document.write("<OPTION VALUE='photsmog.html'>Photochemical Smog")
document.write("<OPTION VALUE='greenhouse.html'>Greenhouse Gases and Effect")
document.write("<OPTION VALUE='acidrain.html'>Chemistry of Acid Rain")
document.write("<OPTION VALUE='ethene.html'>Ethene:properties, production & uses")
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document.write("<OPTION VALUE='sulfacid.html'>Uses & Production of Sulfuric Acid (Contact Process)")
document.write("<OPTION VALUE='haberpro.html'>Uses & Production of Ammonia (Haber Process)")
document.write("<OPTION VALUE='solvay.html'>Production of Sodium Carbonate (Solvay Process)")
document.write("<OPTION VALUE='chloralkali.html'>Production of Sodium Hydroxide (Electrolytic)")
document.write("<OPTION VALUE='glossary.html'>Glossary of Chemistry terms")
document.write("<OPTION VALUE='chemistry.html'>What is Chemistry?")
document.write("<OPTION VALUE='ccareer.html'>Careers in Chemistry")
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document.write("<OPTION VALUE='nobelpri.html'>List of Nobel Prizes awarded in Chemistry")
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