Chemistry Questions and Answers

  • Evaporation doubts!?
  • Evaporation is used in which 2 methods to separate substances in mixtures?
  • Evaporation of glycerol-water solutions?
  • Even though all things used in glass is opaque how is glass transparent?
  • Exam help!?
  • Exam Help!?
  • Example of a reaction that would form butanoic acid?
  • Example of sharon formula?
  • Examples for combination,decompsition, double displacement, displacement,redox,exothermic,endothermic reaction
  • Examples of the processes of metabolism, anabolism, and catabolism?
  • Excess Problem?
  • Exothermic or Endothermic?
  • Exothermic reaction between styrene polymers and neutral oil?
  • Expalin why proteins are able to buffer physiologic solutions over a wide range of pH?
  • Experiment with a chemical reaction using household equipment?
  • Experiment! 10 pts to best answer!?
  • Experiment?
  • Expirement with Chloride?
  • Explain - How is iron extracted from heamatite?
  • Explain all the degrees of freedoms of Carbon dioxide?
  • Explain an ionic bond and a covalent bond in terms of electron sharing and the full outer shell of an atom?
  • Explain and describe the different cell types.?
  • Explain Boyles' pressure, volume in terms with the kinetic molecular theory.?
  • Explain breifly why methanol has a higher boiling point than methane.?
  • Explain how a barometer works?
  • Explain how electricity is used to produce light in incandscenct bulbs and heat in heating elements?
  • Explain how surface area of a solid would affect a dissolution rate?
  • Explain how the attraction that...?
  • Explain how vapor pressure of a compound is related to molecular weight and polarity?
  • Explain in detail the process that takes place when a characteristic line spectrum is observed for (details)?
  • Explain law of Reciprocal Proportions.?
  • Explain the derivation of the Iodine Clock reaction?
  • Explain the difference between weak and dilute when applied to alkalis giving an example?
  • Explain the function and purpose of an indicator in a titration?
  • Explain the phase-graph of an azeotroph solution.?
  • Explain the unsaturation in alkenes and alkynes?
  • Explain this Cars rust quicker in Egypt than in Alaska?
  • Explain what pressure v. temperature calculation for gases and combined gas law?
  • Explain what the purchase of a carbon credit actually means?
  • Explain which piece of lab equipment would be most useful for each of the following task?
  • Explain why a packed fractionating column is more efficient than an unpacked one?
  • Explain why a pure solvent shows a level horizontal curve as solidification occurs?
  • Explain why alkanes such as hexane and cyclohexane are effective at dissoleving grease, where as water is not.
  • Explain why an increase in the frequency of collisions is not an adequate explanation of the effect of...?
  • Explain why C=O is IR active but N=N shows only a Raman spectrum?
  • Explain why Copper is more conductive of heat than iron?
  • Explain why phenacetin is insoluble in base ?
  • Explain why proteins are able to buffer physiologic solutions over a wide range of pH?
  • Explain why pumping additional air into a tire causes the pressure to increase.?
  • Explain why the carbon atom in CH4 can not participate in multiple bonding.?
  • Explain why the following electron configuration is not possible:?
  • Explain why the following electronic configuration is not possible: 1s22s22p63s23p63d24s1?
  • EXPLAIN WHY THE HALOGENS THROUGH ORTHOPARA DETECTING in HETEROPHYLIC SUBSTANCE?
  • Explain why the molecular structure of dihydrogen ...?
  • Explain why the radius fenerally decreases as you go left to right across a row on a periodic table?
  • Explaining catalyst within Exothermic and Endothermic reactions?
  • Explanation of a galvanic cell?
  • Exploding 2L plastic pop bottle?
  • Extraction by reduction?
  • F.A. Cotton?
  • Factors that affect shape and size of an enzyme?
  • Farmers use fertilizers mainly to replace depleted nutrients in the soil. Liquid ammonia and ammonium nitrate?
  • Father of chemistry?
  • F-block element?
  • Fe2O3(s) + 3 CO(g) 2 Fe(s) + 3 CO2(g)?
  • Federal regulations set an upper limit of 50 ppm of NH3 in the air in a work environment. Air from a manufa...
  • Fenton reagent?
  • Ferric sulphate stain removal?
  • Figuring out if a compound is polar or nonpolar?
  • Fill in the blanks help?
  • Fill in the blanks help?
  • Fill two identical containers with equal amount of water. Place one in the sun and the other inside a room.?
  • Filteration?
  • Final Pressure?
  • Final Pressure?
  • Final Volumes?
  • Find [H+] and [OH -] in solution?
  • Find mass of brass cylinder (67% cu + 33% zn)?
  • Find molar in a unbalanced chemical reaction.?
  • Find pH using Ka?
  • Find the differnce between 508 and 3320?
  • Find the differnce between 508 and 3320?
  • Find the Ksp from the following.?
  • Find the mass of 0.1ml CaCl2?
  • Find the mass of sodium required to produce 5.68 L of hydrogen gas at STP?
  • Find the molar mass!?
  • Find the molarity of a solution of?
  • Find the number of g-atoms of Mg used?
  • Find the OH if...?
  • Find the OH- moles in 100mL 0,01M HCL?
  • Find the pH of 5.9 L of a solution prepared by dissolving 0.70 mol of the strong base NaOH in water??
  • Find the pH of 6.5 L of a solution prepared by dissolving 0.65 mol of the strong base NaOH in water.?
  • Find the pH of a 0.15 M solution of Acetic acid with...?
  • Find the pH of a 2.7 L solution containing 0.32 mol HBr in water??
  • Find the pH of the following solution?
  • Find the pH of the solution obtained when 32 mL of 0.087 M ethylamine is titrated to the equivalence point...?
  • Find the right side of the equation for dissolving Al(NO3)3?
  • Find the volume of a gas at -30掳 C and 0.75 atm if it occupies a volume of 255 L at 40掳 C and 1.25 atm?
  • Finding amount needed help?
  • Finding amount of substance?
  • Finding atomic # / identity from given neutrons / protons?
  • Finding hydrogen ion concentration...?
  • Finding M using Ksp?
  • Finding molarity of this??! plz help?
  • Finding Molarity! Please help ASAP!?
  • Finding moles/molar mass and what gas it is?
  • Finding oxidation numbers?
  • Finding pH knowing amount?
  • Finding pH?
  • Finding the amount?
  • Finding the concentration ...?
  • Finding the new pressure of a gas.?
  • Finding the solution for [H3O+], [OH-], and pH?
  • Finding the valence in chemical formulas (the numbers!!)?
  • Fingers are changing colors from chem lab?
  • Finish the equation for the following reaction(s)?
  • Fireworks and gun powder?
  • First ionization energy and trasition metals?
  • First person to give me the correct answer, ill give them the correct answer points.?
  • First Question im excited?
  • FITC Fluorescent Probe question?
  • Flameless Ration Heater Question...?
  • Flowchart? Help!?
  • Fluorine is obtained by the electroysis of?
  • Fluoroantimonic acid?
  • Following equation is it possible for the decomposition of sodium nitrate? 2NaNO3 --> Na2O + 2NO2?
  • Following Hund's rule,how many singly-occupied orbitals are there in the valence shells in their ground state?
  • For a 2.0 M sugar solution and a 1.0 M salt solution.?
  • For a chemical equation to be balanced, what must be equal?
  • For a given chemical reaction such as A -> B, the proper way to represent its equilibrium constant expression
  • For chemistry teachers only?
  • For each of the following cells, what is...?
  • For each of the following pairs of compounds, select the one that has the higher boiling point. Give reasons?
  • For each of the folowing reactions or processes, predict whether the change in entropy for the system will be?
  • For every action there is an equal and opposite reaction...?
  • For my sciene class i got this question..Explain why the electrical charge on an atom is zero or neutral?
  • For science class, I did a lab that involved placing a penny in an evaporating dish.?
  • For science class, I did a lab that involved placing a penny in an evaporating dish.?
  • For thallium, why is the orbital 6p1 filled last?
  • For the cell: A(s) / A+(aq) // C+(aq) / C(s).?
  • For the equilibrium below write the Kc expression?
  • For the equilibrium?
  • For the following compound the solubility is given. Calculate its Ksp.?
  • For the following equation 2NO2(g) --> 2NO(g) + O2(g) Keq = 1.89?
  • For the following pairs of half cells, find the cell potential (E^0 cell) and the overall redox reaction for?
  • For the following reaction at 25oC D(g) + 2E(g) --> 3G(g) + J(s)?
  • For the following system at equilibrium?
  • For the reaction 2 A >< B, the equilibrium concentrations are as follows: [A]= .056 M and [B]= .12 M.?
  • For the reaction 2N2O(g)><O2(g) + 2N2(g) what happens to the equilibrium positon if the pressure decreases?
  • For the reaction 2N2O(g)><what happens to the equilibrium position if the volume increases?
  • For the reaction A><B the equilibrium concentrations are as follows: [A]=0.5056 M and [B]=.12 M calculate the
  • For the reaction Cl2 + 2KBr----> 2KCl + Br2, how many moles of potassium chloride are produced?
  • For the reaction NO3- + I2 --> IO3 + NO2: What substance is reduced? What substance is oxidized?
  • For the reaction S2F6(g)><2SF2(g) + F2(g), [S2F6]=.12 M, [SF2]=.18M, [F2]=.54M the equilibrium constant is?
  • For Van der Waals equation of state (P+a/V2)*(V-b)=RT find dV/dT)p?
  • Forces between particles using Kinetic Molecular theory?
  • Forensic themed chemistry experiment?
  • Formation of ammonia from nitrogen and hydrogen?
  • Formation of BaSO4 crystals?
  • Formula for boiling/freezinng point of a solution?
  • Formula for these(am i supposed to remember them for my final?) -highschool chemistry?
  • Formula of Compound from Reaction Stoichiometry... Empirical Formula?
  • Formula Question?
  • Formula unit equations and the net ionic equations for:?
  • Formula writing question?
  • Fot strong acids and bases, the equilibrium law expressions _____ have a constant value.?
  • Four importance of studying chemistry?
  • Four times the sum of two consecutive integers equals 2 more than 14 times the larger integer?
  • Fourteen grams of a gas occupy 11.2 L at STP. The gas may be..?
  • Fractional distillation of water and alcohol mixture?
  • Free radica;s are formed in response to oxygens attraction for?
  • Freezing alcohol - possible or not?
  • Freezing of hot and cold water?
  • Freezing point depression problem.?
  • Freezing point depression?
  • Freezing point question?
  • Freezing Point Question?
  • Freezing Point Question?
  • Freezing point?
  • Frequecy question or not?
  • Frequency Q?
  • Friedel-Crafts Alkylation Question?
  • From boiling points, determine molarity?
  • From thermal decomposition of a pure solid=a solid and a gas (each pure sub.) Are any of these elements?
  • From thermal decomposition of a pure solid=a solid and a gas (each pure sub.) Are any of these elements? Why?
  • From where can I get information on things which have been given to us by Chemistry?
  • From where can i learn organic chemistry on net in an interactive way?
  • From Where Do I get a very interesting experiments of chemistry?
  • From where does the petrol come from,and how?
  • From which structure is ADH secreted?
  • Fuel Help Once More?
  • Fuel Questions?
  • Funtional Groups?
  • Gah. One more Chemistry Question Please.?
  • Galvanized nails and acid rain chemical equation?
  • Gamma Decay in Nuclear Chemistry?
  • Gamma Radiation...?
  • Gas chemistry?
  • Gas law calculations normally require the use of the Kelvin temperature scale?
  • Gas Law Problem?


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