Chemistry Questions and Answers

  • Describe what condition exists in water molecules to make them dipolar?
  • Describe what happens to the boiling pt and freezing pt of water when salt is added, and what causes this?
  • Describe what happens when zinc is added to hydrochloric acid?
  • Describe what occurs at the molecular level when NaOH dissolves in water?
  • Describe, on a molecular level, the type of energy transitions in the IR spectroscopy and NMR spectroscopy...?
  • Describe.....?
  • Dessicator material?
  • Determ[H+] if 0.25 M H2PO4- is combinedwith0.25M HPO4(subscrpt)-2(suprscrpt)in buffrsolutn w/pKa2(subsrpt=7.21
  • Determening the Enthalpy of Cumbustion of a Fuel (please help me)?
  • Determind the mass of Iodine (I2), which could be produced.?
  • Determine chemical formula?
  • Determine Delta S (reaction) for the synthesis of ammonia.?
  • Determine how many moles of water vapor will be produced at 1.47 atm and 200掳C?
  • Determine Ka from pH?
  • Determine the % by mass of barium ions in a sample of barium chloride containing potassium chloride?
  • Determine the % by mass of barium ions in a sample of barium chloride containing potassium chloride?
  • Determine the Celsius temperature of 1.55 moles of gas contained in a 1.00 L vessel at a pressure of 163 kPa.?
  • Determine the conjugate acid base pairs when water reacts with acetate ion to produce?
  • Determine the emf for the cell shown in cell notation below.10points! YAY!?
  • Determine the empirical formula of a compound containing 20.23 percent aluminum and 79.77 percent chlorine?
  • Determine the empiricular formula of potassium oxide. The molar mass of potassium is 39.10 g/mol?
  • Determine the freezing points of each 0.20 molal conc. aqueous solution?
  • Determine the mass of 100ml solution of 100ml for each reaction (density of solution is 1.00g/mL)?
  • Determine the mass of the products?
  • Determine the molar concentration of the hydronium or hydroxide ions for .0100M HCl?
  • Determine the mole mass?
  • Determine the number of atoms of each element in the formula Mg(OH)2?
  • Determine the percent yield for the reaction between 6.92 g K and 4.28 g of O2 if 7.36 g of K2O is produced?
  • Determine the pH of a 1x10^-4M solution of Ca(OH)2?
  • Determine the pH of a KOH solution made by mixing .251g KOH with enough water to make 1.00x10^2 mL of solution
  • Determine the pH?
  • Determine the STP volume in kL of sulfur hexafluoride?
  • Determine the total concentration (in mol/L) of Cl- ions in a solution...?
  • Determine the volume of hydrogen gas needed to react completely with 2.57 L of oxygen gas to form water.?
  • Determine whether a precipitate will form...?
  • Determine working range?
  • Determining molecules with highest average velocity?
  • Determining pH, [OH-], and [H30+]??
  • Determining the concentration of an unknown acid?
  • Determining the pH of a weak acid/stong base titration at different volumes?
  • Determion Ksp?
  • Diagram 2-pentene and 1-butyne?
  • Diagram all atoms with atomic number less than 31, show location of protons,neutrons,electrons (show shells)?
  • Diamagnetic complexes of cobalt likeCo(NH3)6 3+orangeyellowwhile paramagneticcomplexeslikeCo(H2o)3F3are blue.?
  • Diamagnetic? How do I tell?
  • Diamond is a?
  • DIBAH reductions?
  • Diclorodifloromethene?
  • Did anyone make N2O?
  • Did I do something wrong with my biodiesel experiment?
  • Did i get this right, if not then how?
  • Did Jabir Ibn Hayyan discover Citric Acid and if he did not then who did?
  • Did this oxidize or reduce?
  • Did you know [bath&body works, body lotion, white cherry blossom], has benzyl alcohol, how benefit?
  • Diet coke and mentoes.?
  • Diet Coke and Mentos Lab help?
  • Diet coke/mentos question.?
  • Diethyl ether polarity?
  • Diference & resemblence between ETHERS & ALCOHOLS??
  • Difference between an instantaneous rate equation and an integrated rate equation.?
  • Difference between an ionic compound and a polar covalent compound?
  • Difference between baking powder and baking soda?
  • Difference between Bronze and Iron...?
  • Difference between dop and dinp?
  • Difference between Iron Age metals...?
  • Difference between lighter fluid and gasoline?
  • Difference between orginary glass and drinking glass?
  • Difference between radicals and ions?
  • Difference between saturated, unsaturated, and supersaturated solution?
  • Differences between a chiral centre and a sterogenic centre?
  • Differences between SN1 and SN2 reactions? how we can predict which of these a substrate will undergo?
  • Differences in melting point?
  • Different AMU?
  • Different AMU?
  • Different transformations of matters?
  • Differentciate between parenchyme,chlorenchyma and sclarenchyme?
  • Differentiate between strong acid and concentrated acid????
  • Differentiate Intrinsic to Extrinsic property?
  • Differentiating Cations/Anions:?
  • Diluting a solution, get the right molarity.?
  • Dilution problem?
  • Diphosporus pentasulfide, potassium sulfate, aluminum nitrate, &Ammonium phosphate. which 1 has largest # atom
  • Dis' fo' all chemical engineers out there with knowledge of polymers :)?
  • Disadvantage of having a air freshener in small room?
  • Discover the unrevealed things in the nature??
  • Discuss factors that retains enzymes optimum activity?
  • Discuss the factors affecting the adiabatic flame temprature?
  • Discuss the formation of evaporites?
  • Discuss why molar volume is an important quantity for gases but not for liquids or solids.?
  • Dispersion Forces?
  • Dispersion of PDMS?
  • Displacement reactions with aluminum?
  • Displacement reactions??
  • Disposal of concentrated Sulphuric acid.?
  • Dissociation of Acids?
  • Distillate composition?
  • Distillation ... ?
  • Distillation question?
  • Distillation...?
  • Distillation?
  • Distinguish between an equivalence point and an endpoint?
  • Distinguish syrup and invert syrup?
  • Do all bubbles rise at the same speed in water?
  • Do all chemosynthetic organisms rely on inorganic hydrogen donors for oxidation?
  • Do all explosives contain a large amount of Nitrogen in their formula ?
  • Do all microogranisms use pyruvic acid in the same way?
  • Do amino acids come from animals?
  • Do Argon and Nitrogen have similar chemical properties? Can you explain why or Why not. Thanks for the help =)
  • Do barrels of oil really explode when shot with firearms?
  • Do eco-friendly light bulbs have trace amounts of mercury?
  • Do electrolytes conduct electricity?
  • Do gasses dissolve better when pressure is increased, or temperature is decreased, or both?
  • Do metals have high or low specific heats? How is this reflected in terms of what they are used for?
  • Do pearls really melt in vinegar?
  • Do strong acids have very large equilibruim constants?
  • Do these act by hydrogen bonds?
  • Do these experiments prove that air is matter or air exerts pressure?
  • Do this make sense? I'm a chmistry newbie so I'm not sure?
  • Do ultraviolet ray melt ice faster than heat?
  • Do water filter water have the same ph level as rain water.?
  • Do water molecules spin left or right?
  • Do you know any pilipino chemist??
  • Do you know how to make a 3d model of nitrogen/carbon dioxide cycle?
  • Do you know matter is very small?
  • Do you think that, on average, structural isomers or stereoisomers will have a larger difference in their?
  • Does 1 dm^3 = 1 L.. also does 1cm^3 = 1 mL?
  • Does a catalyst decrease the rate of a reaction?
  • Does a catalyst reduce the time required to reach equilibrium and increase the equilibrium constant?
  • Does a high melting point mean strong intermolecular forces or weak?
  • Does a Lewis base always have at least a lone pair of electrons?
  • Does a litter of liquid equal a kilogram?
  • Does a synthesis reaction involve the breakdown of a compound?
  • Does adding salt to a cooler of ice water lower the temperature?
  • Does adding salt to water make it boil faster?
  • Does an atomic model look exactly like a real atom? Explain why?
  • Does an Endothermic reaction absorb heat?
  • Does an one know a hypothesis on balloon blow up experment?
  • Does any one experienced the side effects of sodium hypochlorite used for bleaching liquid in bathrooms.share?
  • Does any one know a hypotheisis on balloon blow up but that has white vinagar apple cider vinagar,bakingsod?
  • Does any one know any organic pH indicators??
  • Does any one know of a metal whose +3 ions form red aqueous solutions?
  • Does any one know of any chemistry sets that can blow stuff up?
  • Does any1 know a simple test to determine if an organic compound contains a carboxylic acid functional group?
  • Does any1 know a simple test to determine if an organic compound contains a ketone functional group?
  • Does any1 know a simple test to determine if an organic compound contains a phenol functional group?
  • Does any1 know a simple test to determine if an organic compound contains a primary alcohol ?
  • Does any1 know a simple test to determine if an organic compound contains a tertiary alcohol functional group?
  • Does any1 know a simple test to determine if an organic compound contains an aldehyde functional group?
  • Does any1 know a simple test to determine if an organic compound contains an alkene functional group?
  • Does any1 know a simple test to determine if an organic compound contains an ester functional group?
  • Does any1 know how to balance acid+base equations for chemistry?
  • Does any1 know this?
  • Does any1 know y an element's oxidation # is related to the group on the periodic table to which it belongs??
  • Does anybody know how to do a reduction of acetylferrocene?
  • Does anybody know how to learn the colours of the complex ion solutions for A2 chemistry?
  • Does anybody know of a website that has a mixed review of chemistry problems?
  • Does anybody know the answer to this high school chemistry problem?
  • Does anybody remember the name of the new Radioactive Isotope they recently discovered?
  • Does anyone can help me with any of these??
  • Does anyone else experience things like:?
  • Does anyone have an explanation of electrolysis? (i have a chemistry gcse tomorrow) thanks?
  • Does anyone know ?
  • Does anyone know a famous chemist who invented acid & bases or did something with acid & bases?
  • Does anyone know a good chemistry website that explains molecular orbitals and antibonding?
  • Does anyone know a good site to learn moles in chem?
  • Does anyone know any good advertisement slogan for the element iron (Fe)?
  • Does anyone know any good advertisement slogan for the element iron (Fe)?
  • Does anyone know any more flame tests?
  • Does anyone know any of these?? please?
  • Does anyone know anything about potassium cabonate?
  • Does anyone know anything about the history of the states of matter, or where i can find anything on this?
  • Does anyone know how test the surface tension of water?
  • Does anyone know how to balance equations. The question is "C12H22O11 + H2SO4 ------> C + H2O +H2SO4"
  • Does anyone know how to Calculate the heat of formation of NH3 in KJ/Mole?
  • Does anyone know how to condense water into a vapor??
  • Does anyone know how to draw the structural forumula of an ester ?
  • Does anyone know if diglycerides are bad for you?
  • Does anyone know if Organic Chemistry II is offered online? Or at least the lecture online?
  • Does anyone know if there's an easier way to memorize the periodic table?
  • Does anyone know of a free online database for P (H) NMR, and F (H) NMR spectra analysation, inorganic chem?
  • Does anyone know of any good chemistry websites??
  • Does anyone know the chemical structure of Fluorolube?
  • Does anyone know the density of chocolate?
  • Does anyone know the diameter of a Cobalt atom? is it 0.054 nm?
  • Does anyone know the Energy Level Diagram For Aluminum?
  • Does anyone know the english name for this journal?
  • Does anyone know the formula used to find the numbeer of possible isomers for hydrocarbons?
  • Does anyone know the full process of converting molarities?
  • Does Anyone Know The Ingredients For The Die In Transitional Lenses?
  • Does anyone know the solution to supuzzle.com?
  • Does anyone know the stastics behind on average -current doctors performance in Organic Chemistry in College.?
  • Does anyone know these?
  • Does anyone know what the law of conservation of mass is?
  • Does anyone know what the word gas stands for?
  • Does anyone know where i can access an American chemistry society general chem exam?
  • Does anyone know where i can find the order (zero, first, second) for the iodide ion?
  • Does anyone know why acetic is added before testing for lead with chromate ion?
  • Does anyone knows the use in nano zinc oxide?
  • Does anyone take chemistry?
  • Does anyone understand how to do atomic radii, ionization energies, or electron affinities?


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