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?